CN103326811A - Method and device for transmitting signal and demodulating transmitting terminal data signal - Google Patents

Abstract

The present invention is applicable to the field of communication technology, and provides a method and device for signal transmission and data signal demodulation at the transmitting end. The method includes: after receiving the data signal transmitted through eCCE or RE, obtaining the power of the data signal and the DMRS power of the antenna port corresponding to eCCE or RE, the DMRS power is the power adjusted in equal proportions, and the ratio is the ratio of expansion after the eCCE or RE power is borrowed; the first ratio of the power of the data signal to the DMRS power and The initial power of the eCCE or RE is compared with the second ratio of the initial DMRS power to obtain a comparison result; the amplitude information of the data signal is determined according to the comparison result, and the data signal is determined through the amplitude information of the data signal and the phase information of the data signal. The present invention can effectively solve the problem that the existing ePDCCH cannot correctly judge the data signal of the transmitting end when the existing ePDCCH performs power borrowing and adopts high-order modulation.

Description

A method and device for signal transmission and data signal demodulation at the transmitting end

technical field

The invention belongs to the technical field of communication, and in particular relates to a method and a device for signal transmission and demodulation of data signals at a transmitting end.

Background technique

In LTE Rel-11, the capacity of the Physical Downlink Control Channel (PDCCH) becomes the bottleneck that limits the improvement of system throughput. In order to expand the capacity of PDCCH, the existing PDCCH is improved. The improved PDCCH is called ePDCCH (extended PDCCH). The control channel element (Control Channel Element, CCE) of the original PDCCH corresponds to eCCE (enhanced PDCCH) in ePDCCH. CCEs).

In order to improve the spectral efficiency of ePDCCH, unlike PDCCH which only adopts QPSK (Quadrature Phase Shift Keying) modulation, ePDCCH may adopt high-order modulation, such as 16QAM (Quadrature Amplitude Modulation) or 64QAM modulation.

In the R8~R10 system (LTE system), since the resource occupied by the PDCCH of each user equipment (UE) is a random position calculated according to the Hash (hash) random function defined in the protocol, the corresponding UE ID (Identifier) As an input parameter of the Hash function, some CCEs or REs (resource units) in the PDCCH space are not occupied, then the power of these idle control channel units or resource units (CCEs or REs) can be borrowed When the CCE or RE occupied by the PDCCH is used to increase the signal transmission power, thereby improving the SNR (signal-to-noise ratio) and obtaining better UE receiving performance, this process can be called power borrowing.

Since the PDCCH is modulated by QPSK, its demodulation only needs phase information and does not need amplitude information, so borrowing power will not cause demodulation errors.

However, if the ePDCCH is modulated by 16QAM or 64QAM, its demodulation requires not only phase information, but also amplitude information. Take 16QAM in Table 1 as an example:

Table I

When the original data signal at the transmitting end is 0000, the transmitted I and Q signals are respectively

When the original data signal at the transmitting end is 0011, the transmitted I and Q signals are respectively

If the UE receiving end only calculates the phase information, then the phase information in these two cases is the same, corresponding to the phase of π/2 in the 16QAM constellation diagram (as shown in Figure 1), and the UE receiving end cannot distinguish the phase information sent by the transmitting end. Is it 0000 or 0011.

为基准(其中P_L为路径损耗)，来区别发射端发的是0000，还是0011。为简单起见，对发射端发送的信号功率进行归一化，当发射端发的是0000时，接收端收到的信号功率为 $P_L\×[{(1/\sqrt{10})}^2+{(1/\sqrt{10})}^2]=P_L/5,$ 其功率小于功率基准

而当发射端发的是0011时，接收端收到的信号功率为 $P_L\×[{(3/\sqrt{10})}^2+{(3/\sqrt{10})}^2]=9P_L/5,$ 其功率大于功率基准

从而UE结合相位信息和幅度信息就可以正确区分出发射端发送的原始数据信息。In order to be able to correctly demodulate the ePDCCH signal modulated by 16QAM or 64QAM, in addition to the phase information, the UE receiving end also needs to know the amplitude information. Taking the original data signals 0000 and 0011 of the transmitting end in Table 1 as an example, the UE receiving end uses a certain Power as a benchmark, such as

As a benchmark (where _PL is the path loss), to distinguish whether the transmitter sends 0000 or 0011. For simplicity, the signal power sent by the transmitter is normalized. When the transmitter sends 0000, the signal power received by the receiver is $P_L\×[{(1/\sqrt{10})}^2+{(1/\sqrt{10})}^2]=P_L/5,$ whose power is less than the power reference

And when the transmitting end sends 0011, the signal power received by the receiving end is $P_L\×[{(3/\sqrt{10})}^2+{(3/\sqrt{10})}^2]=9P_L/5,$ Its power is greater than the power reference

Therefore, the UE can correctly distinguish the original data information sent by the transmitting end by combining the phase information and the amplitude information.

However, when ePDCCH is demodulated with 16QAM or 64QAM, and it is also considered that the power of some idle eCCEs or REs is lent to occupied eCCEs or REs like PDCCH, there will be such a problem: when there is power borrowing, The signal power sent by the transmitter is equivalent to multiplying a coefficient a. If the UE still judges according to the above power reference, the data signal that may be sent is 0000, and the signal power received by the receiver is $a\×P_L\×[{(1/\sqrt{10})}^2+{(1/\sqrt{10})}^2],$ When a>5, because the signal power received by the UE receiving end $a\×P_L\×[{(1/\sqrt{10})}^2+{(1/\sqrt{10})}^2]>P_L$ The signal sent by the transmitter is misjudged as 0011.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method and device for signal transmission and demodulation of data signals at the transmitting end, so as to improve the success rate of data information discrimination at the transmitting end when the ePDCCH performs power borrowing and high-order modulation.

On the one hand, an embodiment of the present invention provides a method for demodulating a data signal at a transmitting end, the method including:

After receiving the data signal transmitted through the enhanced control channel element eCCE or resource element RE, the power of the data signal and the demodulation reference signal DMRS power of the corresponding antenna port of the eCCE or RE are obtained, and the DMRS power is proportional to For the adjusted power of the initial DMRS power of the antenna port, the ratio is the ratio of the initial power of the eCCE or RE to the expanded power of the eCCE or RE after borrowing the power of other eCCE or RE;

Comparing the first ratio between the power of the data signal and the DMRS power and the second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result;

The amplitude information of the data signal is determined according to the comparison result, and the data signal is determined through the amplitude information of the data signal and the phase information of the data signal.

A method for transmitting a data signal at a transmitting end, the method comprising:

The DMRS power is obtained by adjusting the initial demodulation reference signal DMRS power corresponding to the antenna port of the enhanced control channel element eCCE or resource element RE according to the ratio, wherein the ratio is the initial power of the eCCE or RE and the borrowing power of the eCCE or RE Ratio of expanded power after other eCCE or RE power;

Sending the second ratio of the initial power of the eCCE or RE to the initial DMRS power to the receiving end, and after borrowing the power of other eCCE or RE, sending the data signal to the receiving end through the eCCE or RE, and sending the DMRS to the receiving end.

Another aspect of the embodiment of the present invention provides a device for demodulating a data signal at a transmitting end, the device comprising:

The information acquisition unit is configured to acquire the power of the data signal and the demodulation reference signal DMRS power of the antenna port corresponding to the eCCE or RE after receiving the data signal transmitted through the enhanced control channel unit eCCE or resource unit RE, the The DMRS power is the power after adjusting the initial DMRS power of the antenna port according to the ratio, and the ratio is the ratio of the initial power of the eCCE or RE to the expanded power of the eCCE or RE after borrowing the power of other eCCE or RE Compare;

a comparison unit, configured to compare a first ratio between the power of the data signal and the DMRS power and a second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result;

The determining unit is configured to determine the amplitude information of the data signal according to the comparison result of the comparing unit, and determine the data signal through the amplitude information of the data signal and the phase information of the data signal.

A transmitter data signal sending device, said device comprising:

The ratio adjustment unit is used to adjust the initial demodulation reference signal DMRS power of the corresponding antenna port of the enhanced control channel unit eCCE or resource unit RE to obtain the DMRS power according to the ratio, wherein the ratio is the initial power of the eCCE or RE and the ratio The power ratio of eCCE or RE expanded after borrowing the power of other eCCE or RE;

An information sending unit, configured to send the second ratio of the initial power of the eCCE or RE to the initial DMRS power to the receiving end, and after borrowing other eCCE or RE power, send a data signal to the receiving end through the eCCE or RE, and send to the receiving end The receiving end sends DMRS.

It can be seen from the above technical solution that in the embodiment of the present invention, when the eCCE or RE power is borrowed, the DMRS power of the antenna port corresponding to the eCCE or RE is equalized (the ratio of expansion after the eCCE or RE power is borrowed) Adjusting, comparing the first ratio between the power of the data signal transmitted by the eCCE or RE and the adjusted DMRS power and the second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result, by comparing the result To correctly reflect the amplitude information of the data signal, thereby achieving the purpose of correctly identifying the data signal at the transmitting end and improving the success rate of identifying the data information at the transmitting end.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

FIG. 1 is a 16QAM constellation map provided by the prior art;

FIG. 2 is a flow chart of implementing a method for demodulating a data signal at a transmitting end provided by Embodiment 1 of the present invention;

FIG. 3 is a flow chart of implementing a data signal sending method at a transmitting end provided in Embodiment 2 of the present invention;

FIG. 4 is a structural diagram of a device for demodulating a data signal at a transmitting end provided by Embodiment 3 of the present invention;

FIG. 5 is a structural diagram of an apparatus for sending data signals at a transmitting end provided by Embodiment 4 of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

Embodiment one:

FIG. 2 shows the implementation process of the method for demodulating the data signal at the transmitting end provided by Embodiment 1 of the present invention, and the details are as follows:

In step S201, after receiving a data signal transmitted through an enhanced control channel element eCCE or resource element RE, the power of the data signal and the power of the demodulation reference signal DMRS corresponding to the antenna port of the eCCE or RE are acquired.

In this embodiment, after the enhanced control channel unit eCCE or resource unit RE borrows the power of other eCCE or RE, the transmitting end adjusts the demodulation reference signal DMRS power of the antenna port corresponding to the eCCE or RE according to the ratio, and the ratio is The ratio of the initial power of the eCCE or RE to the expanded power of the eCCE or RE after borrowing power from other eCCEs or REs. For example, if the power of the original eCCE or RE is 100, and the power of the idle eCCE or RE is 60, then the power of the eCCE or RE will be expanded by 60% after the power is borrowed, then the DMRS power of the demodulation reference signal corresponding to the antenna port of the eCCE or RE should also be Expand by 60%.

After the eCCE or RE borrows power, the borrowed eCCE or RE transmits the data signal to the receiving end and sends the adjusted DMRS to the receiving end, and the receiving end (UE end) obtains the data after receiving the data signal The power of the signal and the demodulation reference signal DMRS power of the antenna port corresponding to the eCCE or RE, the power of the data signal and the demodulation reference signal DMRS power of the antenna port corresponding to the eCCE or RE are adjusted power.

In step S202, a first ratio between the power of the data signal and the DMRS power is compared with a second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result.

In this embodiment, the ratio of the power obtained by the data signal after the eCCE or RE power is borrowed to the adjusted DMRS power is used as the first ratio, and the ratio of the initial power of the eCCE or RE to the initial DMRS power is used as the second ratio. A ratio, comparing the first ratio with the second ratio to obtain a comparison result. It should be noted that the ratio of the initial power of the eCCE or RE to the initial DMRS power is the ratio of the average power of the data signal before power borrowing to the DMRS power of the corresponding antenna port of the eCCE or RE (the ratio is the sent to the receiver). Wherein, the average power of the data signal before power borrowing refers to the average power of the data signal transmitted to the UE on the eCCE or RE.

Specifically, during the asymmetric decision, the first ratio R' of the power of the data signal to the power of the DMRS is compared with f(R)=bR+c to obtain a comparison result R'/f(R), so The R is the second ratio of the initial power of the eCCE or RE to the initial DMRS power, and the b and c are constants; when making a symmetrical decision, the first ratio R of the power of the data signal to the DMRS power 'Compared with the second ratio R of the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result R'/R.

In step S203, the amplitude information of the data signal is determined according to the comparison result, and the data signal is determined through the amplitude information of the data signal and the phase information of the data signal.

It should be noted that, in this embodiment, the phase of the data signal in the high-order modulation constellation needs to be determined through phase information, and after the phase is determined, the data signal is further determined through the amplitude information. Wherein, the phase information can be obtained by using existing technologies, which will not be repeated here.

An example to illustrate the above process:

其中P_{eCCE_data_average}表示数据信号的平均功率，P_{eCCE_DMRS}表示所述eCCE或RE对应天线端口的DMRS功率。功率借用后，假设eCCE上承载数据的功率扩大了a倍，则将所述eCCE或RE对应天线端口的解调参考信号DMRS功率作等比例调整，即也扩大了a倍。如果接收端数据信号功率和DMRS功率的比值为 $\frac{a*P_L*[{(1/\sqrt{10})}^2+{(1/\sqrt{10})}^2]P_{\mathrm{eCCE}\_\mathrm{data}\_\mathrm{average}}}{a*P_L*P_{\mathrm{eCC}\_\mathrm{DMRS}}}=\frac{R}{5}<R,$ 则可判别出发射端发送的是Still taking the transmitter sending 0000 and 0011 (the phases of which correspond to the phase of π/2 of the 16QAM constellation diagram) as an example, assume that the ratio of the average power of the data signal carried on the eCCE to the DMRS power of the corresponding antenna port before power borrowing

Wherein P _{eCCE_data_average} represents the average power of the data signal, and P _{eCCE_DMRS} represents the DMRS power of the antenna port corresponding to the eCCE or RE. After the power is borrowed, assuming that the power of data carried on the eCCE is increased by a times, the power of the demodulation reference signal DMRS corresponding to the antenna port of the eCCE or RE is adjusted proportionally, that is, it is also increased by a times. If the ratio of the data signal power at the receiving end to the DMRS power is $\frac{a*P_L*[{(1/\sqrt{10})}^2+{(1/\sqrt{10})}^2]P_{\mathrm{eCCE}\_\mathrm{data}\_\mathrm{average}}}{a*P_L*P_{\mathrm{eCC}\_\mathrm{DMRS}}}=\frac{\mathrm{<figure-callout\; id="5"\; label="R"\; filenames="HDA0000146408880000032.png"\; state="\{\{state\}\}">R</figure-callout>}}{5}<R,$ Then it can be judged that what the transmitter sends is

0000; if the ratio of data signal power to DMRS power $\frac{a*P_L*[{(3/\sqrt{10})}^2+{(3/\sqrt{10})}^2]P_{\mathrm{eCCE}\_\mathrm{data}\_\mathrm{average}}}{a*P_L*P_{\mathrm{eCC}\_\mathrm{DMRS}}}=\frac{9\mathrm{<figure-callout\; id="5"\; label="R"\; filenames="HDA0000146408880000032.png"\; state="\{\{state\}\}">R</figure-callout>}}{5}<R,$ Then it can be judged that what the transmitter sends is

0011. Since the ratio between the power of the data signal and the adjusted DMRS power can correctly reflect the amplitude information of the data signal, the purpose of correctly identifying the data signal at the transmitting end is achieved.

It should be noted that the embodiments of the present invention can be used for symmetric judgment and asymmetric judgment, and the symmetric judgment is as described in the above example. For the asymmetric decision, the amplitude information of the data signal carried on the eCCE or RE can be obtained by comparing with the function of R (for example, f(R)=bR+c, where b and c are constants). That is, the receiving end judges whether the ratio of the data signal power to the DMRS power is greater than f(R)=bR+c to obtain the amplitude information of the data signal.

Embodiment two:

FIG. 3 shows the implementation process of the data signal sending method at the transmitting end provided by Embodiment 2 of the present invention.

The specific details are as follows:

In step S301, the initial demodulation reference signal DMRS power of the antenna port corresponding to the enhanced control channel element eCCE or the resource element RE is adjusted in proportion to obtain the DMRS power.

In this embodiment, after the eCCE or RE borrows the power of other eCCE or RE, the transmitting end adjusts the demodulation reference signal DMRS power of the antenna port corresponding to the eCCE or RE according to the ratio, and the ratio is the eCCE or RE The ratio of the initial power to the expanded power of the eCCE or RE after borrowing power from other eCCEs or REs.

In step S302, send the second ratio of the initial power of the eCCE or RE to the initial DMRS power to the receiving end, and after borrowing the power of other eCCE or RE, send the data signal to the receiving end through the eCCE or RE, and send the data signal to the receiving end end to send DMRS.

In this embodiment, the DMRS is an adjusted DMRS. The ratio of the initial power of the eCCE or RE to the initial DMRS power is the ratio of the average power of the data signal before power borrowing to the DMRS power of the corresponding antenna port of the eCCE or RE. Wherein, the average power of the data signal before power borrowing refers to the average power of the data signal transmitted to the UE on the eCCE or RE.

Embodiment three:

FIG. 4 shows the structure of the device for demodulating the data signal at the transmitting end provided by Embodiment 2 of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

The pair of transmitter data signal demodulation devices 4 includes a judgment unit 41, a comparison unit 42 and a determination unit 43, and its specific functions are as follows:

The information obtaining unit 41 is configured to obtain the power of the data signal and the demodulation reference signal DMRS power of the antenna port corresponding to the eCCE or RE after receiving the data signal transmitted through the enhanced control channel unit eCCE or resource unit RE, The DMRS power is the power after adjusting the initial DMRS power of the antenna port according to the ratio, and the ratio is the initial power of the eCCE or RE and the expanded power of the eCCE or RE after borrowing the power of other eCCE or RE ratio;

A comparison unit 42, configured to compare a first ratio between the power of the data signal and the DMRS power and a second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result;

The determining unit 43 is configured to determine the amplitude information of the data signal according to the comparison result of the comparing unit 42, and determine the data signal through the amplitude information of the data signal and the phase information of the data signal.

Further, the comparison unit 42 is specifically used for:

Comparing the first ratio R' of the power of the data signal to the power of the DMRS with f(R)=bR+c to obtain a comparison result R'/f(R), where R is the initial value of the eCCE or RE The second ratio of the power to the initial DMRS power, the b and c are constants, or the first ratio R' of the power of the data signal to the DMRS power and the initial power of the eCCE or RE and the initial DMRS power The second ratio R is compared to obtain the comparison result R'/R.

Further, the device 4 further includes an information receiving unit 44, configured to receive the second ratio from the transmitting end before the comparing unit 42 performs the comparison.

The device for demodulating the data signal at the transmitting end provided in this embodiment can use the aforementioned corresponding method for demodulating the data signal at the transmitting end. For details, refer to the related description of Embodiment 1 of the method for demodulating the data signal at the transmitting end. repeat.

Embodiment four:

FIG. 5 shows the structure of the data signal sending device at the transmitting end provided by the fourth embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

The transmitter data signal sending device 5 includes a ratio adjustment unit 51 and an information sending unit 52, and its specific functions are as follows:

The ratio adjustment unit 51 is configured to adjust the initial demodulation reference signal DMRS power of the corresponding antenna port of the enhanced control channel unit eCCE or resource unit RE to obtain the DMRS power according to the ratio, wherein the ratio is the initial power of the eCCE or RE and the ratio of the expanded power of the eCCE or RE after borrowing the power of other eCCE or RE;

The information sending unit 52 is configured to send the second ratio of the initial power of the eCCE or RE to the initial DMRS power to the receiving end, and after borrowing other eCCE or RE power, send a data signal to the receiving end through the eCCE or RE, and send a data signal to the receiving end The receiving end sends DMRS.

The apparatus for sending data signals at the transmitting end provided in this embodiment can be used in the aforementioned corresponding method for sending data signals at the transmitting end. For details, refer to the related description of Embodiment 2 of the method for sending data signals at the transmitting end, and details are not repeated here.

The data signal sending device at the transmitting end may be a software unit, a hardware unit, or a combination of hardware and software running in each LTE system, and the data signal sending device at the transmitting end and the data signal demodulating device at the transmitting end pass a signal connect.

Those of ordinary skill in the art can understand that the various units and modules included in the third and fourth embodiments are only divided according to functional logic, but are not limited to the above-mentioned divisions, as long as the corresponding functions can be realized; in addition, each function The specific names of units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present invention.

To sum up, in the embodiment of the present invention, when the eCCE or RE power is borrowed, the DMRS power of the antenna port corresponding to the eCCE or RE is adjusted in equal proportion (the ratio of expansion after the eCCE or RE power is borrowed), and the The first ratio between the power of the data signal transmitted by the eCCE or RE and the adjusted DMRS power is compared with the second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result, and the correct The amplitude information of the data signal is reflected, thereby achieving the purpose of correctly identifying the data signal at the transmitting end, ensuring correct communication between the sending and receiving parties, and improving the success rate of identifying the data information at the transmitting end. Moreover, the embodiment of the present invention is simple to implement and has strong practicability.

Those of ordinary skill in the art can also understand that all or part of the steps in the method of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, so The storage medium mentioned above includes ROM or RAM, magnetic disk, optical disk, etc.

Claims (10)

1. A method for demodulating a transmitting end data signal, characterized in that the method comprises: After receiving the data signal transmitted through the enhanced control channel element eCCE or resource element RE, the power of the data signal and the demodulation reference signal DMRS power of the corresponding antenna port of the eCCE or RE are obtained, and the DMRS power is proportional to For the adjusted power of the initial DMRS power of the antenna port, the ratio is the ratio of the initial power of the eCCE or RE to the expanded power of the eCCE or RE after borrowing the power of other eCCE or RE; Comparing the first ratio between the power of the data signal and the DMRS power and the second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result; The amplitude information of the data signal is determined according to the comparison result, and the data signal is determined through the amplitude information of the data signal and the phase information of the data signal. 2. The method according to claim 1, wherein a first ratio of the power of the data signal to the DMRS power is compared with a second ratio of the initial power of the eCCE or RE to the initial DMRS power The comparison results obtained include: Comparing the first ratio R' with f(R)=bR+c to obtain a comparison result R'/f(R), the R is the second ratio, and b and c are constants. 3. The method according to claim 1, wherein a first ratio of the power of the data signal to the DMRS power is compared with a second ratio of the initial power of the eCCE or RE to the initial DMRS power The comparison results obtained include: A comparison result R'/R is obtained by comparing the first ratio R' with the second ratio R. 4. The method according to claim 1, characterized in that, performing the first ratio of the power of the data signal to the DMRS power with the initial power of the eCCE or RE and the second ratio of the initial DMRS power Before the comparing results are obtained, the method further includes: receiving the second ratio from the transmitting end. 5. A data signal transmission method at a transmitting end, characterized in that the method comprises: The DMRS power is obtained by adjusting the initial demodulation reference signal DMRS power corresponding to the antenna port of the enhanced control channel element eCCE or resource element RE according to the ratio, wherein the ratio is the initial power of the eCCE or RE and the borrowing power of the eCCE or RE Ratio of expanded power after other eCCE or RE power; Sending the second ratio of the initial power of the eCCE or RE to the initial DMRS power to the receiving end, and after borrowing the power of other eCCE or RE, sending the data signal to the receiving end through the eCCE or RE, and sending the DMRS to the receiving end. 6. A device for demodulating data signals at the transmitting end, characterized in that the device comprises: The information acquisition unit is configured to acquire the power of the data signal and the demodulation reference signal DMRS power of the antenna port corresponding to the eCCE or RE after receiving the data signal transmitted through the enhanced control channel unit eCCE or resource unit RE, the The DMRS power is the power after adjusting the initial DMRS power of the antenna port according to the ratio, and the ratio is the ratio of the initial power of the eCCE or RE to the expanded power of the eCCE or RE after borrowing the power of other eCCE or RE Compare; a comparison unit, configured to compare a first ratio between the power of the data signal and the DMRS power and a second ratio between the initial power of the eCCE or RE and the initial DMRS power to obtain a comparison result; The determining unit is configured to determine the amplitude information of the data signal according to the comparison result of the comparing unit, and determine the data signal through the amplitude information of the data signal and the phase information of the data signal. 7. The device according to claim 6, wherein the comparison unit is used for: Comparing the first ratio R' with f(R)=bR+c to obtain a comparison result R'/f(R), the R is the second ratio, and b and c are constants. 8. The device according to claim 6, wherein the comparison unit is configured to: compare the first ratio R' with the second ratio R to obtain a comparison result R'/R. 9. The device of claim 6, further comprising: an information receiving unit, configured to obtain a comparison result from The transmitting end receives the second ratio. 10. A transmitter data signal sending device, characterized in that the device comprises: The ratio adjustment unit is used to adjust the initial demodulation reference signal DMRS power of the corresponding antenna port of the enhanced control channel unit eCCE or resource unit RE to obtain the DMRS power according to the ratio, wherein the ratio is the initial power of the eCCE or RE and the ratio The power ratio of eCCE or RE expanded after borrowing the power of other eCCE or RE; An information sending unit, configured to send the second ratio of the initial power of the eCCE or RE to the initial DMRS power to the receiving end, and after borrowing other eCCE or RE power, send a data signal to the receiving end through the eCCE or RE, and send to the receiving end The receiving end sends DMRS.

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