CN103078672B - A kind of method for transmitting signals, equipment and system - Google Patents

Abstract

An embodiment of the present invention discloses a signal transmission method, including: receiving a first array signal including a first signal sent by a first node and a second signal sent by a second node through at least two antennas; Signal detection to obtain a first detection signal and a second detection signal; encoding the first detection signal and the second detection signal to obtain a code containing the first detection signal and the second detection signal signal; performing array processing on the coded signal to generate a second array signal including the coded signal; sending the second array signal to the first node and the second node through the at least two antennas . Correspondingly, the embodiment of the present invention also provides a signal transmission device and system. The embodiments of the present invention can realize array gain during signal transmission.

Description

A signal transmission method, device and system

technical field

The present invention relates to the field of communications, in particular to a signal transmission method, device and system.

Background technique

Integrating the relay technology with the wireless cellular network can effectively improve the service quality of the cell edge users and enhance the coverage of the system. How to use relay nodes to improve the spectrum efficiency of wireless transmission while extending the coverage has been paid close attention to. In recent years, the proposal and development of network coding theory has provided a new solution to the above problems. In the wireless relay system, the network coding technology is used to combine the data of multiple user equipments for simultaneous transmission at the relay node, which can reduce the resource overhead of multi-user equipment transmission and improve the spectrum efficiency of the system. The most representative one at present is the wireless two-way relay system using physical layer network coding. The system only needs two time slots to complete information exchange. In the first time slot, two user equipments send their respective signals to the relay node at the same time, and the relay node receives the mixed signal; in the second time slot, the relay node performs certain processing on the received signal, and then the processed signal is broadcast. After receiving the broadcast signal, the two user equipments respectively use the existing information to eliminate interference, and obtain useful information from the opposite end user equipment.

At present, in the above-mentioned wireless two-way relay system, after the relay node receives the above-mentioned mixed signal, it performs certain processing on the mixed signal, and then the relay node selects an antenna from multiple antennas of the relay node, and the selected antenna will The above-mentioned processed signal is broadcasted. In this technology, since one antenna is selected for transmission, only multi-antenna diversity gain can be realized, but array gain cannot be realized.

Contents of the invention

Embodiments of the present invention provide a signal transmission method, device and system, which can realize array gain during the signal transmission process.

In a first aspect, a signal transmission method provided by the present invention includes:

receiving a first array signal comprising a first signal sent by the first node and a second signal sent by the second node through at least two antennas;

Detecting the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is a signal obtained by detecting the first signal A signal obtained by detecting the second signal;

performing encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

performing array processing on the coded signal to generate a second array signal including the coded signal;

The second array signal is sent to the first node and the second node through the at least two antennas.

In a first possible implementation manner of the first aspect, the detecting the first array signal includes:

performing maximum likelihood detection on the first array of signals; or

performing zero-forcing detection on the first array signal; or

The minimum square error detection is performed on the first array signal.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, encoding the first detection signal and the second detection signal includes:

performing bit-level XOR processing on the first detection signal and the second detection signal.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation manner, performing array processing on the coded signal includes:

The numbered signals are array-processed by the following formula:

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

Wherein, X is the second array signal, s _R is the coded signal, P is the transmission power, () ^* means to take the conjugate operation item by item, r ₁₂ , q ₁ , and q ₂ are all elements in the QR decomposition result of the channel response after performing QR decomposition on the matrix containing the channel response of the second channel used by the second node to send the second signal, and G= r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, before performing array processing on the encoded signal, the method further includes:

Performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel to obtain the QR decomposition result of the channel response of the second channel, wherein the QR decomposition result of the channel response of the second channel G=r ₁₂ q ₁ +r ₂₂ q ₂ is satisfied, and G is the channel response of the second channel.

In a second aspect, a signal transmission method provided by the present invention includes:

the first node sends a first signal to the relay node through a first channel;

receiving, by the first node, an array signal sent by the relay node through the first channel, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node, The first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node from the second A signal obtained by detecting the second signal sent by the node to the relay node;

The first node detects the array signal to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes a first target signal and the second target signal , the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

The first node performs decoding processing on the target coded signal to obtain the second target signal.

In a first possible implementation manner of the second aspect, after the first node receives the array signal sent by the relay node through the channel and before the first node detects the array signal, the method further includes :

The first node simplifies processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel;

Detecting the array signal by the first node includes:

The first node detects the array signal after the simplified processing;

Wherein, the QR decomposition result is the result of performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel, and the second channel is the information sent by the second node to the relay node. The channel used by the second signal.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the first node detecting the simplified processed array signal includes:

The first node performs maximum likelihood detection on the simplified processed array signal; or

The first node performs zero-forcing detection on the array signal after the simplified processing; or the first node performs minimum square error detection on the array signal after the simplified processing.

With reference to the first possible implementation manner or the second possible implementation manner of the second aspect, in a third possible implementation manner, after the first node receives the array signal sent by the relay node through the first channel, Before the first node detects the simplified processed array signal, the method further includes:

A QR decomposition result of the channel response of the first channel and a QR decomposition result of the channel response of the second channel are acquired.

With reference to the first possible implementation manner or the second possible implementation manner of the second aspect, in a fourth possible implementation manner, the first node decodes the target coded signal to obtain the first After the two target signals, the method also includes:

The first node calculates the similarity between the received second target signal and the second signal sent by the second node to the relay node.

In a third aspect, the present invention provides a relay node device, including: a receiving unit, a detecting unit, an encoding unit, an array processing unit, and a sending unit, wherein:

The receiving unit is configured to receive a first array signal including a first signal sent by the first node and a second signal sent by the second node through at least two antennas;

The detection unit is configured to detect the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the The second detection signal is a signal obtained by detecting the second signal;

The encoding unit is configured to encode the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

The array processing unit is configured to perform array processing on the coded signal to generate a second array signal including the coded signal;

The sending unit is configured to send the second array signal to the first node and the second node through the at least two antennas.

In a first possible implementation manner of the third aspect, the detection unit is further configured to perform maximum likelihood detection on the first array signal; or

The detection unit is further configured to perform zero-forcing detection on the first array signal; or

The detection unit is further configured to perform minimum square error detection on the first array signal.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the encoding unit is further configured to convert the first detection signal and the second detection signal into bits XOR processing.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a third possible implementation manner, the array processing unit is further configured to perform array processing on the numbered signals by the following formula:

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

Wherein, X is the second array signal, s _R is the coded signal, P is the transmission power, () ^* means to take the conjugate operation item by item, r ₁₂ , q ₁ , and q ₂ are all elements in the QR decomposition result of the channel response after performing QR decomposition on the matrix containing the channel response of the second channel used by the second node to send the second signal, and G= r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the device further includes:

The decomposition unit is configured to perform QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel to obtain the QR decomposition result of the channel response of the second channel, wherein the channel response of the second channel The QR decomposition result of the response satisfies G=r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel.

In a fourth aspect, the present invention provides a user equipment, including:

Sending unit, receiving unit, detecting unit and decoding unit, wherein:

The sending unit is configured to send a first signal to the relay node through a first channel;

The receiving unit is configured to receive the array signal sent by the relay node through the first channel, where the array signal includes a code obtained by encoding the first detection signal and the second detection signal by the relay node signal, the first detection signal is a signal obtained by the relay node from detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node from A signal obtained by detecting the second signal sent by the second node to the relay node;

The detection unit is configured to detect the array signal received by the receiving unit to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and The second target signal, the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

The decoding unit is configured to perform decoding processing on the target coded signal obtained by the detection unit to obtain the second target signal.

In a first possible implementation manner of the fourth aspect, the device further includes:

A processing unit, configured to simplify processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel;

The detection unit is also used to detect the array signal after the simplified processing;

Wherein, the QR decomposition result is the result of performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel, and the second channel is the information sent by the second node to the relay node. The channel used by the second signal.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the detection unit is further configured to perform maximum likelihood detection on the array signal after the simplified processing; or

The detection unit is further configured to perform zero-forcing detection on the array signal after the simplified processing; or

The detection unit is further configured to perform minimum square error detection on the array signal after the simplified processing.

With reference to the first possible implementation manner or the second possible implementation manner of the fourth aspect, in a third possible implementation manner, the device further includes:

The obtaining unit is configured to obtain the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel.

With reference to the first possible implementation manner or the second possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the device further includes:

A calculation unit, configured to calculate the similarity between the received second target signal and the second signal sent by the second node to the relay node.

In the fifth aspect, a signal transmission system provided by the present invention includes: a relay node device, a first node device, and a second node device, wherein:

The relay node device is configured to receive a first array signal including a first signal sent by the first node device and a second signal sent by the second node device through at least two antennas; and then perform the first array signal on the first array signal Detecting to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is obtained by detecting the second signal and performing encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; and performing array processing on the encoded signal , generating a second array signal including the coded signal; then sending the second array signal to the first node device and the second node device through the at least two antennas;

The first node device is configured to send a first signal to the relay node device through a first channel; then receive the second array signal sent by the relay node device through the first channel; and The second array signal is detected to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and the second target signal, and the The first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal; and then decoding the target coded signal to obtain said second target signal;

The second node device is configured to send a second signal to the relay node device through a second channel; then receive the second array signal sent by the relay node device through the second channel; and The second array signal is detected to obtain a target coded signal; and then the target coded signal is decoded to obtain the first target signal.

In the above technical solution, the first array signal including the first signal sent by the first node and the second signal sent by the second node is received through at least two antennas; the first array signal is detected to obtain the first detection signal and a second detection signal; encoding the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; arraying the encoded signal processing, generating a second array signal including the coded signal; sending the second array signal to the first node and the second node through the at least two antennas. In this way, the signals sent to the first node and the second node are array signals, so that array gain can be achieved during signal transmission.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic flowchart of a signal transmission method provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention;

FIG. 3 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention;

FIG. 5 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a relay node device provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another relay node device provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a user equipment provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another user equipment provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a signal transmission system provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another relay node device provided by an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another relay node device provided by an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another user equipment provided by an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of another user equipment provided by an embodiment of the present invention;

Fig. 15 is a schematic structural diagram of another signal transmission system provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a schematic flowchart of a signal transmission method provided by an embodiment of the present invention, as shown in Fig. 1 , including:

101. Receive a first array signal including a first signal sent by a first node and a second signal sent by a second node through at least two antennas;

It should be noted that step 101 receives the first array signal including the first signal sent by the first node and the second signal sent by the second node through at least two antennas. This implementation process can refer to the existing wireless two-way relay system Technology.

102. Detect the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is a signal obtained by detecting the second signal;

Optionally, the first array signal received in step 101 may include multiple possible signals of the first signal and multiple possible signals of the second signal, so that through step 102, it is possible to detect The signal most similar to the first signal, that is, the first detection signal, and the signal most similar to the second signal, that is, the second detection signal are output.

103. Perform encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

104. Perform array processing on the coded signal to generate a second array signal including the coded signal;

Optionally, the array processing may be to multiply the coded signal by an array number, and the result of the operation is the second array signal. Of course, the array number may be set to a different value according to different situations.

105. Send the second array signal to the first node and the second node by using the at least two antennas.

Optionally, after the first node receives the above-mentioned second array signal, it can obtain the signal related to the above-mentioned second signal from the second array signal; after the second node receives the above-mentioned second array signal, it can A signal related to the above-mentioned first signal is obtained from the second array signal.

As an optional implementation manner, the device for implementing the above method may include:

relay node device.

In the above technical solution, the first array signal including the first signal sent by the first node and the second signal sent by the second node is received through at least two antennas; the first array signal is detected to obtain the first detection signal and a second detection signal; encoding the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; arraying the encoded signal processing, generating a second array signal including the coded signal; sending the second array signal to the first node and the second node through the at least two antennas. In this way, the signals sent to the first node and the second node are array signals, so that array gain can be achieved during signal transmission.

Fig. 2 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention, as shown in Fig. 2 , including:

201. Receive a first array signal that includes a first signal sent by a first node and a second signal sent by a second node by using at least two antennas.

As an optional implementation manner, the first array signal received in step 201 may be as follows:

y _R ＝[H G]s+n _R

Among them, y _R is the above-mentioned first array signal, H is the channel response of the first channel used by the first node to send the above-mentioned first signal, and G is the channel response of the second channel used by the second node to send the above-mentioned second signal , s=(s _A s _B ) ^T , s _A is the above-mentioned first signal, s _B is the above-mentioned second signal, and n _R is an additive Gaussian white noise vector, namely the additive Gaussian white noise at the place of the device for realizing the method noise vector.

202. Detect the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is a signal obtained by detecting the second signal;

As an optional implementation manner, step 202 may include:

performing maximum likelihood detection on the first array of signals; or

performing zero-forcing detection on the first array signal; or

The minimum square error detection is performed on the first array signal.

Optionally, performing maximum likelihood detection on the first array signal may also include:

The maximum likelihood detection is performed on the first array signal by the following formula:

$\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{\mathrm{<span\; class="notranslate">\; the\; s</span>}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; -</span>\left[\begin{array}{cc}\mathrm{<span\; class="notranslate">\; h</span>}& \mathrm{<span\; class="notranslate">\; G</span>}\end{array}\right]\mathrm{<span\; class="notranslate">\; the\; s</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

in, $\widehat{\mathrm{the\; s}}={\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right)}^T,$ are respectively the first detection signal and the second detection signal, () ^T is a transpose operation, y _R is the first array signal, y _R =[H G]s+n _R , H is the first array signal The channel response of the first channel used by a node to send the first signal, G is the channel response of the second channel used by the second node to send the second signal, s=(s _A s _B ) ^T , s _A , s _B are the first signal and the second signal respectively, n _R is an additive Gaussian white noise vector, and || || is a modulo operation.

in, is a well-known function, $\widehat{\mathrm{the\; s}}=\arg \underset{\mathrm{the\; s}}{\min }{\left|\right|{\mathrm{the\; y}}_R-\left[\begin{array}{cc}h& G\end{array}\right]\mathrm{the\; s}\left|\right|}^2$ express It is the value of s when the value of ||y _R -[H G]s|| ² is minimum.

It should be noted that the first signal s _A sent by the first node is one selected from the N points of the alternative modulation constellation, so that the first signal s _A has N possible values; similarly, the first The second signal s _B sent by the two nodes is selected from the N points of the alternative modulation constellation, so that the second signal s _B has N possible values; and s=(s _A s _B ) ^T Then there are N×N possible values of S; the detection at the relay node is to multiply the N×N possible values with the channel matrix [H G] to obtain N×N values, in which N×N Among the N values, find the one with the smallest error with the signal y _R actually received in step 201, and the one (s _A s _B ) corresponding to this value is taken as the result of the maximum likelihood detection $\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right),$ get $\widehat{\mathrm{the\; s}}={\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right)}^T,$ The above N is an integer greater than 0.

Optionally, detect the above by $\widehat{\mathrm{the\; s}}={\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right)}^T,$ so that you can get That is, the above-mentioned first detection signal and the above-mentioned second detection signal are obtained.

203. Perform encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal.

Optionally, step 203 may include:

performing bit-level XOR processing on the first detection signal and the second detection signal.

That is, the above coded signal generated can be Wherein, s _R is the above coded signal.

204. Perform array processing on the numbered signals according to the following formula to generate a second array signal including the coded signals;

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

Wherein, X is the second array signal, s _R is the coded signal, P is the transmission power, () ^* means to take the conjugate operation item by item, r ₁₂ , q ₁ , and q ₂ are all elements in the QR decomposition result of the channel response after performing QR decomposition on the matrix containing the channel response of the second channel used by the second node to send the second signal, and G= r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel.

It should be noted that the above formula is proved by a large amount of experimental data, which proves that the array gain can be improved during the signal transmission process.

Optionally, before step 204, the method may also include:

Performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel to obtain the QR decomposition result of the channel response of the second channel, wherein the QR decomposition result of the channel response of the second channel G=r ₁₂ q ₁ +r ₂₂ q ₂ is satisfied, and G is the channel response of the second channel. Wherein, the matrix formed by the channel response of the first channel and the channel response of the second channel may be an N×2 matrix, where N is an infinite number of channel responses.

Optionally, the above-mentioned matrix formed by the channel response of the first channel and the channel response of the second channel may be [H G], where H is G being the channel response of the first channel and the channel response of the second channel respectively.

Optionally, the following formula can be obtained through the characteristics of QR decomposition:

[H G]=QR=[q ₁ ...q _N ]R

Among them, according to the properties of complex matrix QR decomposition, the obtained matrix Q=[q ₁ ...q _N ] is a unitary matrix,

$R=\left[\begin{array}{cc}{r}_{11}& r_{12}\\ 0& r_{\mathrm{twenty\; two}}\end{array}\right]$ It is an upper triangular matrix, r ₁₁ and r ₂₂ are real numbers, and r ₁₂ is a complex number. The properties of QR decomposition are well known.

Optionally, the following formula can be obtained from the above formula:

H=r ₁₁ q ₁

G＝r ₁₂ q ₁ +r ₂₂ q ₂

Due to the characteristics of QR decomposition, q ₁ and q ₂ are mutually orthogonal, and the norm is 1, so

||H|| ² ＝||r ₁₁ || ²

||G|| ² ＝||r ₁₂ || ² +||r ₂₂ || ²

In this way, the formula used in the [HG] decomposed property generation step 204 can be applied.

205. Send the second array signal to the first node and the second node by using the at least two antennas.

In the above technical solutions, on the basis of the above embodiments, multiple implementation manners are added, and each implementation manner can realize array gain during signal transmission.

Fig. 3 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention, as shown in Fig. 3 , including:

301. The first node sends a first signal to the relay node through a first channel;

302. The first node receives an array signal sent by the relay node through the first channel, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node, The first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node from the second A signal obtained by detecting the second signal sent by the node to the relay node;

Optionally, when the above-mentioned first node sends the first signal to the relay node, the second node will also send the second signal to the relay node, and the relay node receives through at least two antennas including the signal sent by the first node. The first signal of the first signal and the first array signal of the second signal sent by the second node; the relay node detects the first array signal to obtain the first detection signal and the second detection signal; Perform encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; the relay node then performs array processing on the encoded signal to generate an encoded signal including The second array signal of the coded signal; the relay node finally sends the second array signal to the first node and the second node through the at least two antennas. The second array signal is the array signal received in step 302 .

303. The first node detects the array signal to obtain a target coded signal, where the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and the second target signal , the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

Optionally, the above-mentioned second detection signal is a signal most similar to the second signal detected by the relay node, and the second target signal is detected by the first node using maximum likelihood detection for the second detection signal The signal of the second target signal obtained in this way is very similar to the second signal.

304. The first node performs decoding processing on the target coded signal to obtain the second target signal.

It should be noted that the above-mentioned first node may or may not be the same as the first node in the first and second method embodiments provided by the embodiment of the present invention. When they are the same, the above-mentioned first signal is the first signal described in the above embodiment. When the amount is different, that is, when the first node in this embodiment is different from the first node described in the above embodiment, if it is the above-mentioned second node, the first signal in this embodiment is the second signal described in the above embodiment, The second signal in this embodiment is the first signal described in the above embodiment. That is, the first node in this embodiment may be the first node in the above embodiment, or the second node.

Optionally, the above-mentioned first node may include:

User equipment, such as mobile terminals or computers.

In the above technical solution, the first node sends the first signal to the relay node through the first channel; the first node receives the array signal sent by the relay node through the first channel; the first node performs detection to obtain a target coded signal; the first node decodes the target coded signal to obtain the second target signal. In this way, array gain can be achieved during signal transmission.

Fig. 4 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention, as shown in Fig. 4 , including:

401. The first node sends a first signal to the relay node through a first channel;

402. The first node receives an array signal sent by the relay node through the first channel, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node, The first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node from the second A signal obtained by detecting the second signal sent by the node to the relay node.

As an optional implementation manner, the array signal received in step 402 may include an array signal shown in the following formula:

y _A = H ^T X + n _A

Wherein, y _A is the above-mentioned array signal, H is the channel response of the first channel, () ^T is the transpose operation, and n _A is the additive white Gaussian noise vector at the first node.

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

This way you can get,

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

403. The first node simplifies processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel.

As an optional implementation manner, the above-mentioned QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel may satisfy the following conditions:

H=r ₁₁ q ₁

G＝r ₁₂ q ₁ +r ₂₂ q ₂

Wherein, H is the channel response of the first channel, that is, the QR decomposition result of the channel response of the first channel is r ₁₁ q ₁ , that is, the QR decomposition result of the channel response of the second channel is r ₁₂ q ₁ +r ₂₂ q ₂ , r ₁₁ and r ₂₂ are real numbers, and r ₁₂ is a complex number. and

||H|| ² ＝||r ₁₁ || ²

||G|| ² ＝||r ₁₂ || ² +||r ₂₂ || ²

This simplifies the following to

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

That is, the signal obtained in step 403 can be represented by the following formula:

This simplifies the following to

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

As an optional implementation manner, before step 403, the method may further include:

The first node acquires the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel.

It may be the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel sent by the relay node, or the channel response of the first node to the first channel and the QR decomposition result of the second channel The matrix formed by the channel response is subjected to QR decomposition processing to obtain the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel.

404. The first node detects the array signal to obtain a target coded signal, where the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and the second target signal , the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal.

As an optional implementation manner, step 404 may include:

The first node performs maximum likelihood detection on the array signal after the simplified processing; or

The first node performs zero-forcing detection on the array signal after the simplified processing; or

The first node performs minimum square error detection on the simplified processed array signal.

Optionally, the first node performing maximum likelihood detection on the simplified processed array signal may include:

The array signal after the simplified processing is detected by the following formula:

${\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; -</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

in, is the target coded signal, where y _A is the simplified processed array signal, and n _A is the additive white Gaussian noise vector at the first node, P is the transmit power of the relay node, () represents the conjugate operation item by item, r ₁₁ and r ₁₂ are the channel response of the first channel The number of elements in the QR decomposition result of and the QR decomposition result of the channel response of the second channel, wherein, H=r ₁₁ q ₁ , G=r ₁₂ q ₁ +r ₂₂ q ₂ , H is the channel of the first channel Response, G is the channel response of the second channel.

Wherein, s _R is that the relay node encodes the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal. s _R can satisfy the following formula:

${\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>{\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; \&CirclePlus;</span>{\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

It should be noted that the array signal received in step 402 contains multiple possible s _R s that can be obtained, that is, multiple possible coded signals are obtained, and then through step 404, s _{R that is most similar to the coded signal is detected from the multiple s R ,} That is, the target encoded signal.

when , then the obtained in step 404 in, and are the above-mentioned first target signal and the above-mentioned second target signal, respectively.

405. The first node decodes the target coded signal to obtain the second target signal.

As an optional implementation manner, after step 405, the method may further include:

The first node calculates the similarity between the received second target signal and the second signal sent by the second node to the relay node.

Optionally, calculating the above similarity may reflect the above similarity by calculating an equivalent signal-to-noise ratio of the first node, that is, a value of the equivalent signal-to-noise ratio is a value of the above similarity.

Specifically, the symbol error rate (Symbol Error Rate, SER) of the first node can be calculated by the following formula:

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>$

Among them, p _A is the SER of the first node, according to the QR decomposition result of the channel response of the first channel, we can get Then the equivalent SNR of the first node is where Q(f) is the error function.

As an optional implementation manner, the first node in this embodiment may be the first node in the embodiment shown in FIG. 1 or FIG. 2 .

As an optional implementation, the first node in the embodiment can be the second node in the embodiment shown in Figure 1 or Figure 2, and in this implementation, the first signal is as shown in Figure 1 or Figure 2 The second signal in the embodiment, the first channel is just the second channel in the embodiment shown in Fig. 1 or Fig. 2, and what step 402 receives can include the array signal shown in the following formula:

y _B ＝ G ^T X + n _B

Wherein, wherein, y _B is the above-mentioned array signal, and G is the channel response of the first channel, that is, the channel response of the second channel in the embodiment shown in Fig. 1 or Fig. 2; at the first node in the embodiment The additive white Gaussian noise vector is the additive white Gaussian noise vector at the second node in the embodiment shown in FIG. 1 or FIG. 2 .

This gives:

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

Through the processing of step 403, it can be obtained:

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

Wherein, G=r ₁₂ q ₁ +r ₂₂ q ₂ , ||G|| ² =||r ₁₂ || ² +||r ₂₂ || ² .

Step 404 may include:

The first array signal is detected by the following formula:

${\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; -</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

The SER of the first node can also be calculated by the following formula:

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span>$

p _A is the SER of the first node, according to the QR decomposition result of the channel response of the first channel, it can be obtained Then the equivalent SNR of the first node is

In the above technical solutions, on the basis of the above embodiments, multiple implementation manners can be implemented to achieve array gain during signal transmission.

Fig. 5 is a schematic flowchart of another signal transmission method provided by an embodiment of the present invention, as shown in Fig. 5 , including:

501. The relay node receives a first array signal including a first signal sent by a first node and a second signal sent by a second node through at least two antennas;

502. The relay node detects the first array signal to obtain a first detection signal and a second detection signal, where the first detection signal is a signal obtained by detecting the first signal, and the second The second detection signal is a signal obtained by detecting the second signal;

503. The relay node encodes the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

504. The relay node performs array processing on the coded signal to generate a second array signal including the coded signal;

505. The relay node sends the second array signal to the first node and the second node through the at least two antennas;

506. The first node detects the second array signal to obtain a target coded signal, where the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and the second A target signal, the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

507. The first node performs decoding processing on the target coded signal to obtain the second target signal.

508. The second node detects the second array signal to obtain a target coded signal, where the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and the second A target signal, the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

509. The second node performs decoding processing on the target coded signal to obtain the first target signal.

It should be noted that the above step 506 and step 508 may be performed at the same time.

Optionally, the above nodes may include:

User equipment, such as mobile terminals or computers.

In the above technical solution, the relay node receives the first array signal including the first signal sent by the first node and the second signal sent by the second node through at least two antennas; the relay node detects the first array signal , to obtain the first detection signal and the second detection signal; the relay node encodes the first detection signal and the second detection signal, and obtains a code containing the first detection signal and the second detection signal signal; the relay node performs array processing on the coded signal to generate a second array signal including the coded signal; the relay node sends the second array signal to the first node through the at least two antennas and the second node. In this way, the signals sent to the first node and the second node are array signals, so that array gain can be achieved during signal transmission.

The following are device embodiments of the present invention. The device embodiments of the present invention are used to execute the methods implemented by the method embodiments 1 to 5 of the present invention. For the convenience of description, only the parts related to the embodiments of the present invention are shown, and the specific technical details are not disclosed. , please refer to Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4 and Embodiment 5 of the present invention.

FIG. 6 is a schematic structural diagram of a relay node device provided by an embodiment of the present invention. As shown in FIG. 6 , it includes: a receiving unit 11, a detecting unit 12, an encoding unit 13, an array processing unit 14, and a sending unit 15, wherein:

The receiving unit 11 is configured to receive a first array signal including a first signal sent by the first node and a second signal sent by the second node through at least two antennas;

The detection unit 12 is configured to detect the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the The second detection signal is a signal obtained by detecting the second signal;

Optionally, the first array signal received by the receiving unit 11 may include a plurality of possible signals of the first signal and a plurality of possible signals of the second signal, so that the detection unit 12 can detect from the plurality of signals The signal most similar to the first signal is detected, that is, the first detection signal, and the signal most similar to the second signal, that is, the second detection signal.

An encoding unit 13, configured to encode the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

An array processing unit 14, configured to perform array processing on the coded signal to generate a second array signal including the coded signal;

A sending unit 15, configured to send the second array signal to the first node and the second node through the at least two antennas.

Optionally, after the first node receives the above-mentioned second array signal, it can obtain the signal related to the above-mentioned second signal from the second array signal; after the second node receives the above-mentioned second array signal, it can A signal related to the above-mentioned first signal is obtained from the second array signal.

In the above technical solution, the first array signal including the first signal sent by the first node and the second signal sent by the second node is received through at least two antennas; the first array signal is detected to obtain the first detection signal and a second detection signal; encoding the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; arraying the encoded signal processing, generating a second array signal including the coded signal; sending the second array signal to the first node and the second node through the at least two antennas. In this way, the signals sent to the first node and the second node are array signals, so that array gain can be achieved during signal transmission.

FIG. 7 is a schematic structural diagram of another relay node device provided by an embodiment of the present invention. As shown in FIG. :

The receiving unit 21 is configured to receive the first array signal including the first signal sent by the first node and the second signal sent by the second node through at least two antennas.

As an optional implementation manner, the first array signal received by the receiving unit 21 may be shown in the following formula:

y _R ＝[H G]s+n _R

Among them, y _R is the above-mentioned first array signal, H is the channel response of the first channel used by the first node to send the above-mentioned first signal, and G is the channel response of the second channel used by the second node to send the above-mentioned second signal , s=(s _A s _B ) ^T , s _A is the above-mentioned first signal, s _B is the above-mentioned second signal, and n _R is an additive Gaussian white noise vector, namely the additive Gaussian white noise at the place of the device for realizing the method noise vector.

The detection unit 22 is configured to detect the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the The second detection signal is a signal obtained by detecting the second signal.

As an optional implementation manner, the detection unit 22 may also be configured to perform maximum likelihood detection on the first array signal; or

The detection unit 22 may also be configured to perform zero-forcing detection on the first array signal; or

The detection unit 22 can also be used to perform minimum square error detection on the first array signal.

Optionally, the detection unit 22 may also be used to detect the first array signal by the following formula:

$\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{\mathrm{<span\; class="notranslate">\; the\; s</span>}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; -</span>\left[\begin{array}{cc}\mathrm{<span\; class="notranslate">\; h</span>}& \mathrm{<span\; class="notranslate">\; G</span>}\end{array}\right]\mathrm{<span\; class="notranslate">\; the\; s</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

in, $\widehat{\mathrm{the\; s}}={\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right)}^T,$ are respectively the first detection signal and the second detection signal, () ^T is a transpose operation, y _R is the first array signal, y _R =[H G]s+n _R , H is the first array signal The channel response of the first channel used by a node to send the first signal, G is the channel response of the second channel used by the second node to send the second signal, s=(s _A s _B ) ^T , s _A , s _B are the first signal and the second signal respectively, n _R is an additive Gaussian white noise vector, and || || is a modulo operation.

in, is a well-known function, $\widehat{\mathrm{the\; s}}=\arg \underset{\mathrm{the\; s}}{\min }{\left|\right|{\mathrm{the\; y}}_R-\left[\begin{array}{cc}h& G\end{array}\right]\mathrm{the\; s}\left|\right|}^2$ express It is the value of s when the value of ||y _R -[H G]s|| ² is minimum.

It should be noted that the first signal s _A sent by the first node is one selected from the N points of the alternative modulation constellation, so that the first signal s _A has N possible values; similarly, the first The second signal s _B sent by the two nodes is selected from the N points of the alternative modulation constellation, so that the second signal s _B has N possible values; and s=(s _A s _B ) ^T Then there are N×N possible values of S; the detection at the relay node is to multiply the N×N possible values with the channel matrix [H G] to obtain N×N values, in which N×N Among the N values, find the one with the smallest error with the signal y _R actually received in step 201, and the one (s _A s _B ) corresponding to this value is taken as the result of the maximum likelihood detection $\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right),$ get $\widehat{\mathrm{the\; s}}={\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right)}^T,$ The above N is an integer greater than 0.

Optionally, detect the above by $\widehat{\mathrm{the\; s}}={\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right)}^T,$ so that you can get That is, the above-mentioned first detection signal and the above-mentioned second detection signal are obtained.

An encoding unit 23, configured to encode the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

Optionally, the encoding unit 23 may also be configured to perform bit-level exclusive OR processing on the first detection signal and the second detection signal.

That is, the above coded signal generated can be Wherein, s _R is the above coded signal.

The array processing unit 24 is configured to perform array processing on the coded signal to generate a second array signal including the coded signal.

Performing array processing on the numbered signal by the following formula to generate a second array signal including the coded signal;

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

Wherein, X is the second array signal, s _R is the coded signal, P is the transmission power, () ^* means to take the conjugate operation item by item, r ₁₂ , q ₁ , and q ₂ are all elements in the QR decomposition result of the channel response after performing QR decomposition on the matrix containing the channel response of the second channel used by the second node to send the second signal, and G= r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel.

A sending unit 25, configured to send the second array signal to the first node and the second node through the at least two antennas.

As an optional implementation manner, the device may also include:

Decomposition unit 26, configured to perform QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel, to obtain the QR decomposition result of the channel response of the second channel, wherein the channel response of the second channel The QR decomposition result of the channel response satisfies G=r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel. Wherein, the matrix formed by the channel response of the first channel and the channel response of the second channel may be an N×2 matrix, where N is an infinite number of channel responses.

Optionally, the above-mentioned matrix formed by the channel response of the first channel and the channel response of the second channel may be [H G], where H is G being the channel response of the first channel and the channel response of the second channel respectively.

Optionally, the following formula can be obtained through the characteristics of QR decomposition:

[H G]=QR=[q ₁ ...q _N ]R

Among them, according to the properties of complex matrix QR decomposition, the obtained matrix Q=[q ₁ ...q _N ] is a unitary matrix,

$R=\left[\begin{array}{cc}{r}_{11}& r_{12}\\ 0& r_{\mathrm{twenty\; two}}\end{array}\right]$ It is an upper triangular matrix, r ₁₁ and r ₂₂ are real numbers, and r ₁₂ is a complex number. The properties of QR decomposition are well known.

Optionally, the following formula can be obtained from the above formula:

H=r ₁₁ q ₁

G＝r ₁₂ q ₁ +r ₂₂ q ₂

Due to the characteristics of QR decomposition, q ₁ and q ₂ are mutually orthogonal, and the norm is 1, so

||H|| ² ＝||r ₁₁ || ²

||G|| ² ＝||r ₁₂ || ² +||r ₂₂ || ²

In this way, the formula used in the [HG] decomposed property generation step 204 can be applied.

In the above technical solutions, on the basis of the above embodiments, multiple implementation manners are added, and each implementation manner can realize array gain during signal transmission.

Fig. 8 is a schematic structural diagram of a user equipment provided by an embodiment of the present invention. As shown in Fig. 8, it includes: a sending unit 31, a receiving unit 32, a detecting unit 33, and a decoding unit 34, wherein:

a sending unit 31, configured to send a first signal to the relay node through a first channel;

The receiving unit 32 is configured to receive the array signal sent by the relay node through the first channel, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node , the first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node. A signal obtained by detecting the second signal sent by the second node to the relay node;

Optionally, while the sending unit 31 sends the first signal to the relay node, the second node will also send the second signal to the relay node, and the relay node receives through at least two antennas including the signal sent by the first node. The first signal and the first array signal of the second signal sent by the second node; the relay node then detects the first array signal to obtain a first detection signal and a second detection signal; the relay node then transmits the Perform encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; the relay node then performs array processing on the encoded signal to generate an encoded signal including the The second array signal of the coded signal; the relay node finally sends the second array signal to the first node and the second node through the at least two antennas. The second array signal is the array signal received by the receiving unit 32 .

The detection unit 33 is configured to detect the array signal received by the receiving unit to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and the The second target signal, the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

Optionally, the above-mentioned second detection signal is a signal most similar to the second signal detected by the relay node, and the second target signal is detected by the first node using maximum likelihood detection for the second detection signal The signal of the second target signal obtained in this way is very similar to the second signal.

The decoding unit 34 is configured to perform decoding processing on the target coded signal obtained by the detection unit to obtain the second target signal.

It should be noted that the foregoing user equipment may or may not be the same as the first node in the first and second method embodiments provided in the embodiments of the present invention. When they are the same, the above-mentioned first signal is the first signal described in the above embodiment. When it is different, that is, when the above-mentioned user equipment in this embodiment is different from the first node described in the above-mentioned embodiment, if the above-mentioned user equipment is the above-mentioned second node, the first signal in this embodiment is the second node described in the above-mentioned embodiment. signal, the second signal in this embodiment is the first signal described in the above embodiment. That is, the aforementioned user equipment in this embodiment may be the first node or the second node in the above embodiment.

Optionally, the above user equipment may include:

mobile terminal or computer, etc.

In the above technical solution, the user equipment sends a first signal to the relay node through the first channel; the user equipment receives the array signal sent by the relay node through the first channel; the user equipment detects the array signal, and obtains A target coded signal: the user equipment decodes the target coded signal to obtain the second target signal. In this way, array gain can be achieved during signal transmission.

Fig. 9 is a schematic structural diagram of another user equipment provided by an embodiment of the present invention. As shown in Fig. 9, it includes: a sending unit 41, a receiving unit 42, a processing unit 43, a detecting unit 44, and a decoding unit 45, wherein:

a sending unit 41, configured to send a first signal to the relay node through a first channel;

The receiving unit 42 is configured to receive the array signal sent by the relay node through the first channel, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node , the first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node. A signal obtained by detecting the second signal sent by the second node to the relay node.

As an optional implementation manner, the array signal received by the receiving unit 42 may include an array signal shown in the following formula:

y _A = H ^T X + n _A

Wherein, y _A is the above-mentioned array signal, H is the channel response of the first channel, () ^T is the transpose operation, and n _A is the additive white Gaussian noise vector at the first node.

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

This way you can get,

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

The processing unit 43 is configured to simplify processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel;

As an optional implementation manner, the above-mentioned QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel may satisfy the following conditions:

H=r ₁₁ q ₁

G＝r ₁₂ q ₁ +r ₂₂ q ₂

Wherein, H is the channel response of the first channel, that is, the QR decomposition result of the channel response of the first channel is r ₁₁ q ₁ , that is, the QR decomposition result of the channel response of the second channel is r ₁₂ q ₁ +r ₂₂ q ₂ , r ₁₁ and r ₂₂ are real numbers, and r ₁₂ is a complex number. and

||H|| ² ＝||r ₁₁ || ²

||G|| ² ＝||r ₁₂ || ² +||r ₂₂ || ²

This simplifies the following to

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

That is, the signal obtained by the processing unit 43 can be represented by the following formula:

This simplifies the following to

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

As an optional implementation manner, the user equipment may further include:

An acquisition unit (not shown in the drawings), configured to acquire the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel.

It may be the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel sent by the relay node, or the channel response of the first node to the first channel and the QR decomposition result of the second channel The matrix formed by the channel response is subjected to QR decomposition processing to obtain the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel.

The detection unit 44 is configured to detect the array signal received by the receiving unit to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and the The second target signal, the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

As an optional implementation manner, the detection unit 44 may also be configured to perform maximum likelihood detection on the simplified processed array signal; or

The detection unit 44 can also be used to perform zero-forcing detection on the array signal after the simplified processing; or

The detection unit 44 can also be used to perform minimum square error detection on the array signal after the simplified processing.

Optionally, the detection unit 44 can also be used to detect the first array signal by the following formula:

${\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; -</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

in, is the target coded signal, where y _A is the simplified processed array signal, and n _A is the additive white Gaussian noise vector at the first node, P is the transmit power of the relay node, () represents the conjugate operation item by item, r ₁₁ and r ₁₂ are the channel response of the first channel The QR decomposition result of and the QR decomposition result of the channel response of the second channel are arity numbers, wherein, H=r ₁₁ q ₁ , G=r ₁₂ q ₁ +r ₂₂ q ₁ , H is the channel of the first channel Response, G is the channel response of the second channel.

Wherein, s _R is that the relay node encodes the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal. s _R can satisfy the following formula:

${\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>{\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; \&CirclePlus;</span>{\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

when , then the detection unit 44 obtained in, and are the above-mentioned first target signal and the above-mentioned second target signal, respectively.

The decoding unit 45 is configured to perform decoding processing on the target coded signal obtained by the detection unit to obtain the second target signal.

As an optional implementation manner, the user equipment may further include:

A calculating unit 46, configured to calculate a similarity between the received second target signal and the second signal sent by the second node to the relay node.

Optionally, the calculation of the above similarity may reflect the above similarity by calculating an equivalent signal-to-noise ratio of the first node, that is, a value of the equivalent signal-to-noise ratio is a value of the above similarity.

Specifically, the SER of the first node can be calculated by the following formula:

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>$

Among them, p _A is the SER of the first node, according to the QR decomposition result of the channel response of the first channel, we can get Then the equivalent SNR of the first node is where Q(f) is the error function.

As an optional implementation manner, the user equipment in this embodiment may be the first node in the embodiment shown in FIG. 1 or FIG. 2 .

As an optional implementation manner, the user equipment in the embodiment may be the second node in the embodiment shown in FIG. 1 or FIG. 2 , and in this implementation manner, the first signal is the The second signal in the embodiment, the first channel is the second channel in the embodiment shown in Fig. 1 or Fig. 2, and what the receiving unit 42 receives may include an array signal as shown in the following formula:

y _B ＝ G ^T X + n _B

Wherein, wherein, y _B is the above-mentioned array signal, and G is the channel response of the first channel, that is, the channel response of the second channel in the embodiment shown in FIG. 1 or FIG. 2; the addition at the user equipment in the embodiment Gaussian white noise vector, that is, the additive Gaussian white noise vector at the second node in the embodiment shown in FIG. 1 or FIG. 2 .

This gives:

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

Just can get by processing unit 43:

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

Wherein, G=r ₁₂ q ₁ +r ₂₂ q ₂ , ||G|| ² =||r ₁₂ || ² +||r ₂₂ || ² .

The detection unit 44 can also be used to detect the first array signal by the following formula:

${\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; -</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

The SER of the first node can also be calculated by the following formula:

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span>$

p _A is the SER of the user equipment, according to the QR decomposition result of the channel response of the first channel, it can be obtained Then the equivalent SNR of the first node is

In the above technical solutions, on the basis of the above embodiments, multiple implementation manners can be implemented to achieve array gain during signal transmission.

FIG. 10 is a schematic structural diagram of a signal transmission system provided by an embodiment of the present invention. As shown in FIG. 10 , it includes: a relay node device 51, a first node device 52, and a second node device 53, wherein:

The relay device 51 is configured to receive a first array signal including the first signal sent by the first node device 52 and the second signal sent by the second node device 53 through at least two antennas; and then perform the first array signal on the first array signal Detecting to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is obtained by detecting the second signal and performing encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; and performing array processing on the encoded signal , generating a second array signal including the coded signal; then sending the second array signal to the first node device 52 and the second node device 53 through the at least two antennas;

The first node device 52 is configured to send a first signal to the relay node device 51 through the first channel; then receive the second array signal sent by the relay node device 51 through the first channel; and send the second array signal The signal is detected to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes a first target signal and the second target signal, and the first target signal is for A signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal; and then decoding the target coded signal to obtain the second target signal ;

The second node device 53 is configured to send a second signal to the relay node device 51 through a second channel; then receive the second array signal sent by the relay node device 51 through the second channel; and send the second array signal The signal is detected to obtain a target coded signal; and then the target coded signal is decoded to obtain the first target signal.

In the above technical solution, the relay node device receives the first array signal including the first signal sent by the first node and the second signal sent by the second node through at least two antennas; the relay node device receives the first array signal performing detection to obtain a first detection signal and a second detection signal; the relay node device encodes the first detection signal and the second detection signal to obtain a detection signal including the first detection signal and the second detection signal The coded signal of the signal; the relay node device performs array processing on the coded signal to generate a second array signal including the coded signal; the relay node device sends the second array signal to the The first node device and the second node device. In this way, the signals sent to the first node and the second node are array signals, so that array gain can be achieved during signal transmission.

FIG. 11 is a schematic structural diagram of a relay node device provided by an embodiment of the present invention. As shown in FIG. A connected processor 64, wherein the memory 63 is used to store a set of program codes, and the processor 64 is used to adjust the program codes stored in the memory 63 to perform the following operations:

receiving a first array signal comprising a first signal sent by the first node and a second signal sent by the second node through the receiver 61;

Detecting the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is a signal obtained by detecting the first signal A signal obtained by detecting the second signal;

performing encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

performing array processing on the coded signal to generate a second array signal including the coded signal;

The second array signal is sent to the first node and the second node through a transmitter 62 .

Optionally, the receiver 61 can be at least two antennas, and the transmitter 63 can also be at least two antennas, and the at least two antennas of the receiver 61 and the at least two antennas of the transmitter 63 can be the same antenna, that is, the The antenna is two-way, that is, it can receive and send data.

In the above technical solution, the first array signal including the first signal sent by the first node and the second signal sent by the second node is received through at least two antennas; the first array signal is detected to obtain the first detection signal and a second detection signal; encoding the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; arraying the encoded signal processing, generating a second array signal including the coded signal; sending the second array signal to the first node and the second node through the at least two antennas. In this way, the signals sent to the first node and the second node are array signals, so that array gain can be achieved during signal transmission.

Fig. 12 is a schematic structural diagram of another relay node device provided by an embodiment of the present invention, as shown in Fig. 12 , including: a receiver 71, a transmitter 72 and a memory 73, and a receiver 71, a transmitter 72 and a memory 73 connected processor 74, wherein the memory 73 is used to store a set of program codes, and the processor 74 is used to adjust the program codes stored in the memory 73 to perform the following operations:

receiving a first array signal including a first signal sent by the first node and a second signal sent by the second node through the receiver 71;

Detecting the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is a signal obtained by detecting the first signal A signal obtained by detecting the second signal;

performing encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal;

Performing array processing on the numbered signal by the following formula to generate a second array signal including the coded signal;

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

Wherein, X is the second array signal, s _R is the coded signal, P is the transmission power, () ^* means to take the conjugate operation item by item, r ₁₂ , q ₁ , and q ₂ are all elements in the QR decomposition result of the channel response after performing QR decomposition on the matrix containing the channel response of the second channel used by the second node to send the second signal, and G= r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel.

The second array signal is sent to the first node and the second node by a transmitter 72 .

As an optional implementation manner, the first array signal received by the processor 74 may be shown in the following formula:

y _R ＝[H G]s+n _R

Among them, y _R is the above-mentioned first array signal, H is the channel response of the first channel used by the first node to send the above-mentioned first signal, and G is the channel response of the second channel used by the second node to send the above-mentioned second signal , s=(s _A s _B ) ^T , s _A is the above-mentioned first signal, s _B is the above-mentioned second signal, and n _R is an additive Gaussian white noise vector, namely the additive Gaussian white noise at the place of the device for realizing the method noise vector.

As an optional implementation manner, the operation performed by the processor 74 to detect the first array signal may include:

performing maximum likelihood detection on the first array of signals; or

performing zero-forcing detection on the first array signal; or

The minimum square error detection is performed on the first array signal.

Optionally, the operation of detecting the first array signal performed by the processor 74 may include:

The first array signal is detected by the following formula:

$\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{\mathrm{<span\; class="notranslate">\; the\; s</span>}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; -</span>\left[\begin{array}{cc}\mathrm{<span\; class="notranslate">\; h</span>}& \mathrm{<span\; class="notranslate">\; G</span>}\end{array}\right]\mathrm{<span\; class="notranslate">\; the\; s</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

in, $\widehat{\mathrm{the\; s}}={\left(\begin{array}{cc}{\widehat{\mathrm{the\; s}}}_A& {\widehat{\mathrm{the\; s}}}_B\end{array}\right)}^T,$ are respectively the first detection signal and the second detection signal, () ^T is a transpose operation, y _R is the first array signal, y _R =[H G]s+n _R , H is the first array signal The channel response of the first channel used by a node to send the first signal, G is the channel response of the second channel used by the second node to send the second signal, s=(s _A s _B ) ^T , s _A , s _B are the first signal and the second signal respectively, n _R is an additive Gaussian white noise vector, and || || is a modulo operation.

in, is a well-known function, $\widehat{\mathrm{the\; s}}=\arg \underset{\mathrm{the\; s}}{\min }{\left|\right|{\mathrm{the\; y}}_R-\left[\begin{array}{cc}h& G\end{array}\right]\mathrm{the\; s}\left|\right|}^2$ express It is the value of s when the value of ||y _R -[H G]s|| ² is minimum.

As an optional implementation manner, the operation performed by the processor 74 to encode the first detection signal and the second detection signal may include:

performing bit-level XOR processing on the first detection signal and the second detection signal.

That is, the above coded signal generated can be Wherein, s _R is the above coded signal.

As an optional implementation manner, the processor 74 is further configured to perform the following operations before performing array processing on the numbered signals:

Performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel to obtain the QR decomposition result of the channel response of the second channel, wherein the QR decomposition result of the channel response of the second channel G=r ₁₂ q ₁ +r ₂₂ q ₂ is satisfied, and G is the channel response of the second channel. Wherein, the matrix formed by the channel response of the first channel and the channel response of the second channel may be an N×2 matrix, where N is an infinite number of channel responses.

Optionally, the above-mentioned matrix formed by the channel response of the first channel and the channel response of the second channel may be [HG], where H is G being the channel response of the first channel and the channel response of the second channel respectively.

Optionally, the following formula can be obtained through the characteristics of QR decomposition:

[H G]=QR=[q ₁ ...q _N ]R

Among them, according to the properties of complex matrix QR decomposition, the obtained matrix Q=[q ₁ ...q _N ] is a unitary matrix,

$R=\left[\begin{array}{cc}{r}_{11}& r_{12}\\ 0& r_{\mathrm{twenty\; two}}\end{array}\right]$ It is an upper triangular matrix, r ₁₁ and r ₂₂ are real numbers, and r ₁₂ is a complex number. The properties of QR decomposition are well known.

Optionally, the following formula can be obtained from the above formula:

H=r ₁₁ q ₁

G＝r ₁₂ q ₁ +r ₂₂ q ₂

Due to the characteristics of QR decomposition, q ₁ and q ₂ are mutually orthogonal, and the norm is 1, so

||H|| ² ＝||r ₁₁ || ²

||G|| ² ＝||r ₁₂ || ² +||r ₂₂ || ²

In the above technical solutions, on the basis of the above embodiments, multiple implementation manners are added, and each implementation manner can realize array gain during signal transmission.

FIG. 13 is a schematic structural diagram of another user equipment provided by an embodiment of the present invention. As shown in FIG. A processor 84, wherein the memory 83 is used to store a set of program codes, and the processor 84 is used to adjust the program codes stored in the memory 83 to perform the following operations:

sending a first signal to an upward relay node via a transmitter 82 on a first channel;

receiving the array signal sent by the relay node on the first channel through the receiver 81, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node, The first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node from the second A signal obtained by detecting the second signal sent by the node to the relay node;

Detecting the array signal to obtain a target coded signal, the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes a first target signal and the second target signal, the first The target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

Decoding the target coded signal to obtain the second target signal.

It should be noted that the foregoing user equipment may or may not be the same as the first node in the first and second method embodiments provided in the embodiments of the present invention. When they are the same, the above-mentioned first signal is the first signal described in the above embodiment. When it is different, that is, when the above-mentioned user equipment in this embodiment is different from the first node described in the above-mentioned embodiment, if the above-mentioned user equipment is the above-mentioned second node, the first signal in this embodiment is the second node described in the above-mentioned embodiment. signal, the second signal in this embodiment is the first signal described in the above embodiment. That is, the aforementioned user equipment in this embodiment may be the first node or the second node in the above embodiment.

Optionally, the above user equipment may include:

mobile terminal or computer, etc.

In the above technical solution, the user equipment sends a first signal to the relay node through the first channel; the user equipment receives the array signal sent by the relay node through the first channel; the user equipment detects the array signal, and obtains A target coded signal: the user equipment decodes the target coded signal to obtain the second target signal. In this way, array gain can be achieved during signal transmission.

FIG. 14 is a schematic structural diagram of another user equipment provided by an embodiment of the present invention. As shown in FIG. A processor 94, wherein the memory 93 is used to store a set of program codes, and the processor 94 is used to adjust the program codes stored in the memory 93 to perform the following operations:

sending a first signal to an upward relay node via a transmitter 92 on a first channel;

receiving the array signal sent by the relay node on the first channel through the receiver 91, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node, The first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node from the second A signal obtained by detecting the second signal sent by the node to the relay node;

simplifying the processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel;

Detecting the array signal to obtain a target coded signal, the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes a first target signal and the second target signal, the first The target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal;

Decoding the target coded signal to obtain the second target signal.

As an optional implementation manner, the array signal received by the processor 94 may include an array signal as shown in the following formula:

y _A = H ^T X + n _A

Wherein, y _A is the above-mentioned array signal, H is the channel response of the first channel, () ^T is the transpose operation, and n _A is the additive white Gaussian noise vector at the first node.

$\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$

This way you can get,

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

The above-mentioned QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel may satisfy the following conditions:

H=r ₁₁ q ₁

G＝r ₁₂ q ₁ +r ₂₂ q ₂

Wherein, H is the channel response of the first channel, that is, the QR decomposition result of the channel response of the first channel is r ₁₁ q ₁ , that is, the QR decomposition result of the channel response of the second channel is r ₁₂ q ₁ +r ₂₂ q ₂ , r ₁₁ and r ₂₂ are real numbers, and r ₁₂ is a complex number. and

||H|| ² ＝||r ₁₁ || ²

||G|| ² ＝||r ₁₂ || ² +||r ₂₂ || ²

This simplifies the following to

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

That is, the simplified signal obtained by the processor 94 can be represented by the following formula:

This simplifies the following to

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}$

As an optional implementation manner, the processor 94 performs the operation of simplifying the processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel Previously, it was also used to:

A QR decomposition result of the channel response of the first channel and a QR decomposition result of the channel response of the second channel are acquired.

It may be the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel sent by the relay node, or the channel response of the first channel and the channel response of the second channel by the processor 94 The matrix formed by the channel response is subjected to QR decomposition processing to obtain the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel.

As an optional implementation manner, the operation of detecting the array signal performed by the processor 94 may include:

performing maximum likelihood detection on the array signal after the simplified processing; or

The first node performs zero-forcing detection on the array signal after the simplified processing; or

The first node performs minimum square error detection on the simplified processed array signal.

Optionally, the operation of detecting the array signal performed by the processor 94 may include:

The array signal is detected by the following formula:

${\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; -</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

in, is the target coded signal, where y _A is the simplified processed array signal, and n _A is the additive white Gaussian noise vector at the first node, P is the transmit power of the relay node, () represents the conjugate operation item by item, r ₁₁ and r ₁₂ are the channel response of the first channel The number of elements in the QR decomposition result of and the QR decomposition result of the channel response of the second channel, wherein, H=r ₁₁ q ₁ , G=r ₁₂ q ₁ +r ₂₂ q ₂ , H is the channel of the first channel Response, G is the channel response of the second channel.

Wherein, s _R is that the relay node encodes the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal. s _R can satisfy the following formula:

${\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>{\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; \&CirclePlus;</span>{\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

It should be noted that the above r ₁₁ and r ₁₂ are complex numbers, so that multiple possible s _R can be obtained in the above formula, that is, multiple possible coded signals can be obtained, and then the processor 94 can detect and code the signal from multiple signals The most similar signal, the target-encoded signal.

when , then the processor 94 gets in, and are the above-mentioned first target signal and the above-mentioned second target signal, respectively.

As an optional implementation manner, after the processor 94 performs decoding processing on the target coded signal to obtain the second target signal, it is further configured to perform the following operations:

Calculate the similarity between the received second target signal and the second signal sent by the second node to the relay node.

Optionally, calculating the above similarity may reflect the above similarity by calculating an equivalent signal-to-noise ratio of the first node, that is, a value of the equivalent signal-to-noise ratio is a value of the above similarity.

Specifically, the SER of the user equipment can be calculated by the following formula:

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; A</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 11</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>$

Among them, p _A is the SER of the first node, according to the QR decomposition result of the channel response of the first channel, we can get Then the equivalent SNR of the first node is where Q(f) is the error function.

As an optional implementation manner, the user equipment in this embodiment may be the first node in the embodiment shown in FIG. 1 or FIG. 2 .

As an optional implementation manner, the user equipment in the embodiment may be the second node in the embodiment shown in FIG. 1 or FIG. 2 , and in this implementation manner, the first signal is as shown in FIG. 1 or FIG. 2 The second signal in the embodiment, the first channel is the second channel in the embodiment shown in Fig. 1 or Fig. 2, and what the receiving unit 42 receives may include an array signal as shown in the following formula:

y _B ＝ G ^T X + n _B

Wherein, wherein, y _B is the above-mentioned array signal, and G is the channel response of the first channel, that is, the channel response of the second channel in the embodiment shown in FIG. 1 or FIG. 2; the addition at the user equipment in the embodiment Gaussian white noise vector, that is, the additive Gaussian white noise vector at the second node in the embodiment shown in FIG. 1 or FIG. 2 .

This gives:

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

Simplify the processing by the processor 94 to get:

${\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}$

Wherein, G=r ₁₂ q ₁ +r ₂₂ q ₂ , ||G|| ² =||r ₁₂ || ² +||r ₂₂ || ² .

The processor 94 can also be used to detect the first array signal by the following formula:

${\stackrel{<span\; class="notranslate">\; ^</span>}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; arg</span>}\underset{{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}}{\mathrm{<span\; class="notranslate">\; min</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; -</span>\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}<span\; class="notranslate">\; (</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}$

The SER of the first node can also be calculated by the following formula:

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; B</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; i</span>}{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; twenty\; two</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; Q</span>}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}{\mathrm{<span\; class="notranslate">\; \&sigma;</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>\mathrm{<span\; class="notranslate">\; G</span>}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span>$

p _A is the SER of the first node, according to the QR decomposition result of the channel response of the first channel, it can be obtained Then the equivalent SNR of the first node is

In the above technical solutions, on the basis of the above embodiments, multiple implementation manners can be implemented to achieve array gain during signal transmission.

FIG. 15 is a schematic structural diagram of a signal transmission system provided by an embodiment of the present invention. As shown in FIG. 15 , it includes: a relay node device 101, a first node device 102, and a second node device 103, wherein:

Optionally, the relay device 101 may be any relay node device shown in FIG. 11 or FIG. 12 .

Optionally, the user equipment 102 may be any user equipment shown in FIG. 13 or FIG. 14 .

In the above technical solution, the relay node device receives the first array signal including the first signal sent by the first node and the second signal sent by the second node through at least two antennas; the relay node device receives the first array signal performing detection to obtain a first detection signal and a second detection signal; the relay node device encodes the first detection signal and the second detection signal to obtain a detection signal including the first detection signal and the second detection signal The coded signal of the signal; the relay node device performs array processing on the coded signal to generate a second array signal including the coded signal; the relay node device sends the second array signal to the The first node device and the second node device. In this way, the signals sent to the first node and the second node are array signals, so that array gain can be achieved during signal transmission.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM for short).

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (17)

1. A signal transmission method, characterized in that, comprising: receiving a first array signal comprising a first signal sent by the first node and a second signal sent by the second node through at least two antennas; Detecting the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is a signal obtained by detecting the first signal A signal obtained by detecting the second signal; performing encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; performing array processing on the coded signal to generate a second array signal including the coded signal; sending the second array of signals to the first node and the second node via the at least two antennas; Wherein, said performing array processing on said coded signal comprises: Perform array processing on the coded signal by the following formula: $\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; iq</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$ Wherein, X is the second array signal, s _R is the coded signal, P is the transmission power, ( ) ^* represents the conjugate operation item by item, r ₁₂ , r ₂₂ , q ₁ , and q ₂ are all elements in the QR decomposition result of the channel response after performing QR decomposition on the matrix containing the channel response of the second channel used by the second node to send the second signal, And G=r ₁₂ q ₁ +r ₂₂ q ₂ , ||G|| ² =||r ₁₂ || ² +||r ₂₂ || ² , G is the channel response of the second channel. 2. The method according to claim 1, wherein said detecting said first array signal comprises: performing maximum likelihood detection on the first array of signals; or performing zero-forcing detection on the first array signal; or The minimum square error detection is performed on the first array signal. 3. The method according to claim 1 or 2, wherein said encoding the first detection signal and the second detection signal comprises: performing bit-level XOR processing on the first detection signal and the second detection signal. 4. The method according to claim 1, wherein, before performing array processing on the encoded signal, the method further comprises: Performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel to obtain the QR decomposition result of the channel response of the second channel, wherein the QR decomposition result of the channel response of the second channel G=r ₁₂ q ₁ +r ₂₂ q ₂ is satisfied, and G is the channel response of the second channel. 5. A signal transmission method, characterized in that, comprising: the first node sends a first signal to the relay node through the first channel; receiving, by the first node, an array signal sent by the relay node through the first channel, where the array signal includes an encoded signal obtained by encoding the first detection signal and the second detection signal by the relay node, The first detection signal is a signal obtained by the relay node detecting the first signal sent by the first node to the relay node, and the second detection signal is a signal obtained by the relay node from the second A signal obtained by detecting the second signal sent by the node to the relay node; The first node detects the array signal to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes a first target signal and a second target signal, so The first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal; The first node decodes the target coded signal to obtain the second target signal; Wherein, after the first node receives the array signal sent by the relay node through the channel and before the first node detects the array signal, the method further includes: The first node simplifies processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel; Detecting the array signal by the first node includes: The first node detects the array signal after the simplified processing; Wherein, the QR decomposition result is the result of performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel, and the second channel is the information sent by the second node to the relay node. The channel used by the second signal. 6. The method according to claim 5, wherein the first node detecting the simplified processed array signal comprises: The first node performs maximum likelihood detection on the simplified processed array signal; or The first node performs zero-forcing detection on the array signal after the simplified processing; or The first node performs minimum square error detection on the simplified processed array signal. 7. The method according to claim 5 or 6, wherein after the first node receives the array signal sent by the relay node through the first channel, the first node performs the simplified processing of the array signal Before detecting, the method also includes: A QR decomposition result of the channel response of the first channel and a QR decomposition result of the channel response of the second channel are acquired. 8. The method according to claim 5 or 6, wherein the first node decodes the target coded signal, and after obtaining the second target signal, the method further comprises: The first node calculates the similarity between the received second target signal and the second signal sent by the second node to the relay node. 9. A relay node device, characterized in that it includes: a receiving unit, a detecting unit, an encoding unit, an array processing unit, and a sending unit, wherein: The receiving unit is configured to receive a first array signal including a first signal sent by the first node and a second signal sent by the second node through at least two antennas; The detection unit is configured to detect the first array signal to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the The second detection signal is a signal obtained by detecting the second signal; The encoding unit is configured to encode the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; The array processing unit is configured to perform array processing on the coded signal to generate a second array signal including the coded signal; The sending unit is configured to send the second array signal to the first node and the second node through the at least two antennas; Wherein, the array processing unit is configured to perform array processing on the coded signal by the following formula: $\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; R</span>}}\sqrt{\frac{\mathrm{<span\; class="notranslate">\; P</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}^{<span\; class="notranslate">\; *</span>}}{<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; iq</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{<span\; class="notranslate">\; *</span>}<span\; class="notranslate">\; )</span>$ Wherein, X is the second array signal, s _R is the coded signal, P is the transmission power, ( ) ^* represents the conjugate operation item by item, r ₁₂ , r ₂₂ , q ₁ , and q ₂ are all elements in the QR decomposition result of the channel response after performing QR decomposition on the matrix containing the channel response of the second channel used by the second node to send the second signal, And G=r ₁₂ q ₁ +r ₂₂ q ₂ , ||G|| ² =||r ₁₂ || ² +||r ₂₂ || ² , G is the channel response of the second channel. 10. The device according to claim 9, wherein the detection unit is further configured to perform maximum likelihood detection on the first array signal; or The detection unit is further configured to perform zero-forcing detection on the first array signal; or The detection unit is further configured to perform minimum square error detection on the first array signal. 11. The device according to claim 9 or 10, wherein the encoding unit is further configured to perform bit-level XOR processing on the first detection signal and the second detection signal. 12. The device of claim 9, further comprising: The decomposition unit is configured to perform QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel to obtain the QR decomposition result of the channel response of the second channel, wherein the channel response of the second channel The QR decomposition result of the response satisfies G=r ₁₂ q ₁ +r ₂₂ q ₂ , where G is the channel response of the second channel. 13. A user equipment, characterized by comprising: a sending unit, a receiving unit, a detecting unit, and a decoding unit, wherein: The sending unit is configured to send a first signal to the relay node through a first channel; The receiving unit is configured to receive the array signal sent by the relay node through the first channel, where the array signal includes a code obtained by encoding the first detection signal and the second detection signal by the relay node signal, the first detection signal is a signal obtained by the relay node detecting the first signal sent by the user equipment to the relay node, and the second detection signal is a signal obtained by the relay node detecting the first signal sent by the user equipment to the relay node A signal obtained by detecting the second signal sent by the second node to the relay node; The detection unit is configured to detect the array signal received by the receiving unit to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes the first target signal and a second target signal, the first target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal; The decoding unit is configured to perform decoding processing on the target coded signal obtained from the detection unit to obtain the second target signal; Wherein, the device also includes: A processing unit, configured to simplify processing of the array signal based on the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel; The detection unit is also used to detect the array signal after the simplified processing; Wherein, the QR decomposition result is the result of performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel, and the second channel is the information sent by the second node to the relay node. The channel used by the second signal. 14. The device according to claim 13, wherein the detection unit is further configured to perform maximum likelihood detection on the array signal after the simplified processing; or The detection unit is further configured to perform zero-forcing detection on the array signal after the simplified processing; or The detection unit is further configured to perform minimum square error detection on the array signal after the simplified processing. 15. The device of claim 13 or 14, further comprising: An acquiring unit, configured to acquire the QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel. 16. The device according to claim 13 or 14, further comprising: A calculation unit, configured to calculate the similarity between the received second target signal and the second signal sent by the second node to the relay node. 17. A signal transmission system, characterized by comprising: a relay node device, a first node device and a second node device, wherein: The relay node device is configured to receive a first array signal including a first signal sent by the first node device and a second signal sent by the second node device through at least two antennas; and then perform the first array signal on the first array signal Detecting to obtain a first detection signal and a second detection signal, wherein the first detection signal is a signal obtained by detecting the first signal, and the second detection signal is obtained by detecting the second signal and performing encoding processing on the first detection signal and the second detection signal to obtain an encoded signal including the first detection signal and the second detection signal; and performing array processing on the encoded signal , generating a second array signal including the coded signal; then sending the second array signal to the first node device and the second node device through the at least two antennas; The first node device is configured to send a first signal to the relay node device through a first channel; then receive the second array signal sent by the relay node device through the first channel; and The second array signal is detected to obtain a target coded signal, and the target coded signal is a signal obtained by detecting the coded signal; the target coded signal includes a first target signal and a second target signal, and the first The target signal is a signal obtained by detecting the first detection signal, and the second target signal is a signal obtained by detecting the second detection signal; and then decoding the target coded signal to obtain the second target signal; The second node device is configured to send a second signal to the relay node device through a second channel; then receive the second array signal sent by the relay node device through the second channel; and The second array signal is detected to obtain a target coded signal; and then the target coded signal is decoded to obtain the first target signal; Wherein, the first node device is further used to simplify the processing of the array signal by the pre-acquired QR decomposition result of the channel response of the first channel and the QR decomposition result of the channel response of the second channel, and to simplify the processing of the array signal The array signal after the above simplified processing is detected; Wherein, the QR decomposition result is the result of performing QR decomposition processing on the matrix formed by the channel response of the first channel and the channel response of the second channel, and the second channel is the information sent by the second node to the relay node. The channel used by the second signal.