WO2016026111A1

WO2016026111A1 - Method and apparatus for generating and processing multicarrier signal

Info

Publication number: WO2016026111A1
Application number: PCT/CN2014/084887
Authority: WO
Inventors: 陈磊; 闫华
Original assignee: 华为技术有限公司
Priority date: 2014-08-21
Filing date: 2014-08-21
Publication date: 2016-02-25

Abstract

Disclosed in the embodiments of the present invention are a method and apparatus for generating and processing a multicarrier signal, relating to the field of communications, and used for simplifying pilot frequency design and reducing control signal overheads. The method for generating a multicarrier signal provided in the embodiments of the present invention comprises: generating a FBMC signal and an OFDM signal; the frequency band occupied by the FBMC and the frequency band occupied by the OFDM are different, and the duration of the FBMC symbol in the FBMC signal and the duration of the OFDM effective symbol in the OFDM signal are the same; adding a time domain guard interval in the FBMC signal, such that any one FBMC symbol in the FBMC signal having added the time domain guard interval is aligned with any one OFDM effective symbol in the OFDM signal; and merging the OFDM signal and the FBMC signal having added the time domain guard signal to obtain a multicarrier signal.

Description

Method and device for generating and processing multi-carrier signals

Technical field

The present invention relates to the field of communications, and in particular, to a method and apparatus for generating and processing a multi-carrier signal. Background technique

Multi-carrier modulation technology is widely used for its good resistance to frequency selective fading. Common multi-carrier technologies include: Filter Bank Multicarrier (FBMC) technology and Orthogonal Frequency Division Multiplexing (Orthogonal) Frequency Division Multiplexing (OFDM) technology. Different multi-carrier technologies are used in different scenarios.

Currently, only one multi-carrier technology is generally used in the same system. Since the channel states of different receivers in the same system are different, the transmission effect is poor for the receiver whose channel state does not match the scenario applicable to the multi-carrier technology used in the system. In order to solve this problem, a possible implementation is to use multiple multi-carrier technologies in the same system, so that the transmitting party can select a suitable multi-carrier technology according to the channel state of the receiver; wherein, different multi-carrier technologies The corresponding signal occupies a different frequency band. In this possible implementation, multiple signals can be directly added in the time domain to generate a multi-carrier signal.

However, when FBMC technology and OFDM technology are used in the same system, since the relative positional relationship between symbols in the FBMC signal is different from the relative positional relationship between symbols in the OFDM signal, the pilot and OFDM in the frequency band occupied by the FBMC signal are used. The pilots in the frequency band occupied by the signal cannot be aligned in the time domain. Thus, when the receiver uses the pilot for channel measurement, the transmitting party needs to send control signaling for the pilot in the OFDM signal and control signaling for the pilot in the FBMC signal to the receiver, thereby causing Larger control signaling overhead.

Summary of the invention

Embodiments of the present invention provide a method and apparatus for generating and processing a multi-carrier signal, which can simplify the design of pilots and reduce the overhead of control signaling.

To achieve the above objective, the embodiment of the present invention adopts the following technical solutions: In a first aspect, a method for generating a multi-carrier signal is provided, including:

Generating a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and a duration of the FBMC symbol in the FBMC signal is related to the OFDM The duration of the OFDM effective symbols in the signal is the same;

Adding a time domain guard interval to the FBMC signal such that a first FBMC symbol in the FBMC signal after adding a time domain guard interval is aligned with a first OFDM effective symbol in the OFDM signal; the first FBMC symbol To add any FBMC symbol in the FBMC signal after the guard interval, the first OFDM effective symbol is any OFDM effective symbol in the OFDM signal;

The OFDM signal is combined with the FBMC signal after adding a time domain guard interval to obtain a multicarrier signal.

With reference to the first aspect, in a first possible implementation, the duration of the time domain guard interval is: an interval between a start time of the second FBMC symbol and a start time of the first OFDM effective symbol The second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, a start time of the second FBMC symbol starts from a cyclic prefix CP corresponding to the first OFDM effective symbol The start time is the same; the second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol among the FBMC signals.

Combining the first aspect, the first possible implementation of the first aspect, or the second a possible implementation manner, in a third possible implementation manner, the signal in the time domain guard interval is the time interval from the start time of the time domain guard interval A segment of the FBMC signal that is adjacent to the start time and has the same duration as the time domain guard interval.

In combination with the first aspect, the first possible implementation of the first aspect, or the third possible implementation manner, in the fourth possible implementation, the OFDM signal and the added time domain are After the FBMC signal is synthesized and the multi-carrier signal is obtained, the method further includes:

Transmitting, by the receiver, information of the time domain guard interval; the information of the time domain guard interval is used to cause the receiver to remove the time domain guard interval.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation, the information about the time domain guard interval includes: a duration of the time domain guard interval and the time domain guard interval Starting time.

With reference to the first aspect, the first possible implementation manner of the first aspect, and the fifth possible implementation manner, in the sixth possible implementation manner, the OFDM signal and the added time domain are Before the FBMC signal is synthesized and the multi-carrier signal is obtained, the method further includes:

Filtering the OFDM signal;

Combining the OFDM signal with the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal includes:

The filtered OFDM signal is combined with the FBMC signal after adding a time domain guard interval to obtain a multicarrier signal.

In combination with the first aspect, the first possible implementation manner of the first aspect, and the fifth possible implementation manner, in the seventh possible implementation manner, the OFDM signal and the added time domain are Before the FBMC signal is synthesized and the multi-carrier signal is obtained, the method further includes:

The frequency band occupied by the OFDM signal and the addition of the time domain guard interval Add a frequency domain guard interval between the frequency bands occupied by the FBMC signal; or,

Before adding the time domain guard interval to the FBMC signal, the method further includes:

A frequency domain guard interval is added between a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal.

In a second aspect, a method of processing a multi-carrier signal is provided, including:

Receiving a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and an FBMC symbol in the FBMC signal The duration is the same as the duration of the OFDM effective symbol in the OFDM signal; the FBMC signal includes a time domain guard interval, the time domain guard interval being used to cause one FBMC symbol in the FBMC signal and the OFDM signal One of the OFDM effective symbol alignments;

Obtaining information about the time domain guard interval;

And removing the time domain guard interval according to the information of the time domain guard interval to generate a first multicarrier signal;

Fourier transform and FBMC subcarrier selection are performed on the first multicarrier signal to obtain an FBMC signal on the subcarrier.

With reference to the second aspect, in a first possible implementation manner, the information about the time domain protection interval includes: a duration of the time domain protection interval and a start time of the time domain protection interval.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation, the acquiring the information about the time domain protection interval includes: receiving the time domain sent by the transmitting party Protection interval information; or,

Reading the preset information of the time domain guard interval.

With reference to the second aspect, the first possible implementation of the second aspect, or the second possible implementation manner, in a third possible implementation manner, in the opposite Before the first multi-carrier signal is subjected to Fourier transform and FBMC sub-carrier selection to obtain the FBMC signal on the sub-carrier, the method further includes:

And filtering the first multi-carrier signal by using an analysis polyphase filter bank; performing Fourier transform and FBMC sub-carrier selection on the first multi-carrier signal to obtain an FBMC signal on the sub-carrier, including:

Performing Fourier transform and FBMC subcarrier selection on the filtered first multicarrier signal to obtain an FBMC signal on the subcarrier.

With reference to the second aspect, the first possible implementation manner of the second aspect, or the second possible implementation manner, in the fourth possible implementation manner, the performing the first multi-carrier signal The Fourier transform and the FBMC subcarrier selection result in the FBMC signal on the subcarriers, including:

Fourier transform, FBMC subcarrier selection, and frequency domain filtering are performed on the first multicarrier signal to obtain an FBMC signal on the subcarrier.

With reference to the second aspect, the first possible implementation manner of the second aspect, and the fourth possible implementation manner, in the fifth possible implementation manner, the multi-carrier signal further includes orthogonal frequency division multiplexing Using an OFDM signal, the OFDM signal includes a cyclic prefix CP; the method further includes:

Removing the CP to generate a second multi-carrier signal;

Fourier transform and OFDM subcarrier selection are performed on the second multicarrier signal to obtain an OFDM signal on the subcarrier.

In a third aspect, a transmitter device is provided, including:

a generating unit, configured to generate a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; the frequency band occupied by the FBMC signal is different from the frequency band occupied by the OFDM signal, and the FBMC symbol in the FBMC signal continues The time is the same as the duration of the OFDM effective symbol in the OFDM signal;

a first adding unit, configured to add a time domain guard interval in the FBMC signal, such that adding a first FBMC symbol in the FBMC signal after the time domain guard interval Aligning with a first OFDM effective symbol in the OFDM signal; the first FBMC symbol is any FBMC symbol in the FBMC signal after adding a guard interval, the first OFDM effective symbol being in the OFDM signal Any OFDM effective to pay τ;

And a synthesizing unit, configured to synthesize the OFDM signal and the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal.

With reference to the third aspect, in a first possible implementation manner, the duration of the time domain guard interval is: an interval between a start time of the second FBMC symbol and a start time of the first OFDM effective symbol The second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, a start time of the second FBMC symbol starts from a cyclic prefix CP corresponding to the first OFDM effective symbol The start time is the same; the second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol among the FBMC signals.

With reference to the third aspect, the first possible implementation manner of the third aspect, or the second possible implementation manner, in a third possible implementation, the signal in the time domain guard interval is the A segment of the FBMC signal that is adjacent to the start time of the time domain guard interval and that is the same as the duration of the time domain guard interval before the start of the time domain guard interval.

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

And a sending unit, configured to send information about the time domain guard interval to the receiver device, where the time domain guard interval information is used to enable the receiver device to remove the time domain protection interval.

Combined with the fourth possible implementation of the third aspect, in a fifth possible implementation In the manner, the information about the time domain guard interval includes: a duration of the time domain guard interval and a start time of the time domain guard interval.

With reference to the third aspect, the first possible implementation manner of the third aspect, and the fifth possible implementation manner, in the sixth possible implementation, the transmitting device further includes:

a filtering unit, configured to filter the OFDM signal;

The synthesizing unit is specifically configured to synthesize the filtered OFDM signal and the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal.

With reference to the third aspect, the first possible implementation manner of the third aspect, and the fifth possible implementation manner, in the seventh possible implementation, the transmitting device further includes:

a second adding unit, configured to add a frequency domain guard interval between a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal after adding a time domain guard interval; or, a frequency band occupied by the OFDM signal A frequency domain guard interval is added between the frequency bands occupied by the FBMC signal.

In a fourth aspect, a receiver device is provided, including:

a receiving unit, configured to receive a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and the FBMC signal The duration of the FBMC symbol is the same as the duration of the OFDM effective symbol in the OFDM signal; the FBMC signal includes a time domain guard interval for causing one FBMC symbol in the FBMC signal Aligning with one OFDM effective symbol in the OFDM signal;

An acquiring unit, configured to acquire information about the time domain guard interval;

a first removing unit, configured to remove the time domain guard interval according to the information about the time domain guard interval, to generate a first multi-carrier signal;

a processing unit, configured to obtain, on the subcarrier, according to the first multicarrier signal FBMC signal; among them,

The processing unit specifically includes:

a Fourier transform module, configured to perform Fourier transform on the first multicarrier signal;

The FBMC subcarrier selection module is configured to perform FBMC subcarrier selection on the first multicarrier signal after the Fourier transform to obtain an FBMC signal on the subcarrier.

With reference to the fourth aspect, in a first possible implementation manner, the information about the time domain protection interval includes: a duration of the time domain protection interval and a start time of the time domain protection interval.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in the second possible implementation, the acquiring unit is specifically configured to:

Receiving information about the time domain guard interval sent by the transmitting device; or reading the preset information of the time domain guard interval.

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

An analysis filtering module, configured to filter the first multi-carrier signal by using an analysis polyphase filter bank;

The Fourier transform module is specifically configured to perform a Fourier transform on the filtered first multicarrier signal.

With reference to the fourth aspect, the first possible implementation manner of the fourth aspect, or the second possible implementation manner, in a fourth possible implementation, the FBMC subcarrier selection module is used to The first multi-carrier signal after the transform of the lobes performs FBMC sub-carrier selection to obtain an intermediate signal;

The processing unit further includes:

The frequency domain filtering module is configured to perform frequency domain filtering on the intermediate signal to obtain an FBMC signal on the subcarrier. With reference to the fourth aspect, the first possible implementation manner of the fourth aspect, and the fourth possible implementation manner, in the fifth possible implementation manner, the multi-carrier signal further includes orthogonal frequency division multiplexing Using an OFDM signal, the OFDM signal includes a cyclic prefix CP; the receiver device further includes:

a second removing unit, configured to remove the CP, and generate a second multi-carrier signal; the Fourier transform module is further configured to perform a Fourier transform on the second multi-carrier signal;

The processing unit further includes:

An OFDM subcarrier selection module is configured to perform OFDM subcarrier selection on the second multicarrier signal after Fourier transform to obtain an OFDM signal on the subcarrier.

In a fifth aspect, a transmitter device is provided, including: a memory and a processor, wherein

The memory is for storing a set of codes; the code is for controlling the processor to perform the following actions:

With reference to the fifth aspect, in a first possible implementation, the duration of the time domain guard interval is: a start time of the second FBMC symbol and the first OFDM An interval between the start times of the valid symbols; the second FBMC symbol being an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a second possible implementation manner, a start time of the second FBMC symbol starts from a cyclic prefix CP corresponding to the first OFDM effective symbol The start time is the same; the second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol among the FBMC signals.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, or the second possible implementation manner, in a third possible implementation manner, the signal in the time domain guard interval is the A segment of the FBMC signal that is adjacent to the start time of the time domain guard interval and that is the same as the duration of the time domain guard interval before the start of the time domain guard interval.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, and the third possible implementation manner, in the fourth possible implementation, the transmitting device further includes:

And a transmitter, configured to send information about the time domain guard interval to the receiver device; the information of the time domain guard interval is used to enable the receiver device to remove the time domain guard interval.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation, the information about the time domain guard interval includes: a duration of the time domain guard interval and the time domain guard interval Starting time.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, and the fifth possible implementation manner, in a sixth possible implementation manner, the processor is further configured to: Signal filtering;

The processor is specifically configured to synthesize the filtered OFDM signal and the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal.

Combining the fifth aspect, the first possible implementation manner of the fifth aspect, and the fifth Any one of the possible implementation manners. In a seventh possible implementation manner, the processor is further configured to:

Adding a frequency domain guard interval between a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal after adding a time domain guard interval; or

According to a sixth aspect, a receiver device is provided, including: a receiver, a memory, and a processor;

The receiver is configured to receive a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; the frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, The duration of the FBMC symbol in the FBMC signal is the same as the duration of the OFDM effective symbol in the OFDM signal; the FBMC signal includes a time domain guard interval, the time domain guard interval being used to cause one of the FBMC signals FBMC symbols are aligned with one OFDM effective symbol in the OFDM signal;

Obtaining information about the time domain guard interval;

With reference to the sixth aspect, in a first possible implementation manner, the information about the time domain protection interval includes: a duration of the time domain protection interval and a start time of the time domain protection interval.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation, the receiver is further configured to: receive, send by the transmitting device Information about the time domain guard interval; or

The processor is specifically configured to: read preset information about the time domain guard interval. With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, or the second possible implementation manner, in a third possible implementation manner, the processor is further configured to use the analysis multi-phase The filter bank filters the first multi-carrier signal; the processor is specifically configured to perform Fourier transform and FBMC sub-carrier selection on the filtered first multi-carrier signal to obtain FBMC on the sub-carrier signal.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, or the second possible implementation manner, in a fourth possible implementation, the processor is specifically configured to: A multicarrier signal is subjected to Fourier transform, FBMC subcarrier selection and frequency domain filtering to obtain an FBMC signal on the subcarrier.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, and the fourth possible implementation manner, in the fifth possible implementation manner, the multi-carrier signal further includes orthogonal frequency division multiplexing Using an OFDM signal, the OFDM signal includes a cyclic prefix CP; the processor is further configured to:

Removing the CP to generate a second multi-carrier signal;

The method and apparatus for generating and processing a multi-carrier signal provided by the embodiment of the present invention, the transmitting party may place the pilot in the frequency band occupied by the FBMC signal on the aligned FBMC symbol, and/or, within the frequency band occupied by the OFDM signal The pilot is placed on the aligned OFDM effective symbols; thus, when the receiver uses the pilot for channel measurement, the transmitting party only needs to send control signaling for the pilot in the aligned FBMC symbol or to the aligned OFDM to the receiver. The control signaling of the pilot in the effective symbol enables the receiver to perform channel measurement using the pilot carried in the multi-carrier signal; in addition, the transmitting and receiving parties can also stipulate aligned FBMC symbols and/or OFDM effective symbols including the pilot. Information, so that the transmitter does not need to send control signaling to the receiver, so that the receiver can use the multi-carrier signal. The pilot carried in the number completes the channel measurement. Compared with the prior art, the design of the pilot can be simplified and the overhead of control signaling can be reduced. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. It will be apparent to those skilled in the art that other drawings may be obtained from these drawings without the inventive labor.

FIG. 1 is a schematic flowchart of a method for generating a multi-carrier signal according to Embodiment 1 of the present invention;

2 is a schematic diagram of an FBMC signal according to an embodiment of the present invention; FIG. 3 is a schematic diagram of an OFDM signal according to an embodiment of the present invention; FIG. 4 is a first FBMC symbol and a first embodiment of the present invention. two

Schematic diagram of the FBMC symbol;

FIG. 5 is a schematic diagram of a duration of acquiring a time domain guard interval according to Embodiment 1 of the present invention; FIG.

6 is a schematic diagram of an FBMC signal with a time domain guard interval added according to Embodiment 1 of the present invention;

FIG. 7 is a schematic diagram of another FBMC signal with a time domain guard interval added according to Embodiment 1 of the present invention; FIG.

FIG. 8 is a schematic flowchart of a method for generating a multi-carrier signal according to Embodiment 2 of the present invention; FIG.

FIG. 9 is a schematic diagram of a FBMC signal with a time domain guard interval added according to Embodiment 2 of the present invention; FIG.

FIG. 10 is a schematic flowchart of a method for processing a multi-carrier signal according to Embodiment 3 of the present invention;

FIG. 11 is a schematic diagram of a method for processing a multi-carrier signal according to Embodiment 4 of the present invention; Schematic diagram of the process;

FIG. 12 is a schematic flowchart diagram of another method for processing a multi-carrier signal according to Embodiment 4 of the present invention; FIG.

13 is a schematic flowchart of another method for processing a multi-carrier signal according to Embodiment 4 of the present invention;

FIG. 14 is a schematic flowchart diagram of another method for processing a multi-carrier signal according to Embodiment 4 of the present invention; FIG.

15 is a schematic flowchart diagram of another method for processing a multi-carrier signal according to Embodiment 4 of the present invention;

FIG. 16 is a schematic structural diagram of a transmitting device according to Embodiment 5 of the present invention; FIG. 17 is a schematic structural diagram of another transmitting device according to Embodiment 5 of the present invention;

FIG. 18 is a schematic structural diagram of a transmitting device according to Embodiment 6 of the present invention; FIG. 19 is a schematic structural diagram of another transmitting device according to Embodiment 6 of the present invention;

FIG. 20 is a schematic structural diagram of a receiver device according to Embodiment 7 of the present invention; FIG. 21 is a schematic structural diagram of another receiver device according to Embodiment 7 of the present invention;

FIG. 22 is a schematic structural diagram of another receiver device according to Embodiment 7 of the present invention; FIG.

FIG. 23 is a schematic structural diagram of a receiver device according to Embodiment 8 of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention. The term "and/or" in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist separately. B these three situations. The term " / " in this document denotes the relationship of or. The term "plurality" as used herein generally refers to two or more.

Embodiment 1

As shown in FIG. 1, a method for generating a multi-carrier signal according to an embodiment of the present invention includes:

101: generating an FBMC signal and an OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, a duration of an FBMC symbol in the FBMC signal, and a duration of an OFDM effective symbol in the OFDM signal the same.

Exemplarily, the method for generating a multi-carrier signal provided by this embodiment can be applied to a system that uses both FBMC technology and OFDM technology. The executor of this embodiment may be a transmitting party, and the transmitting party may be a base station, an access point (AP) or a user equipment.

The FBMC signal is composed of FBMC symbols. There is overlap between any two adjacent FBMC symbols. The duration of any two FBMC symbols is the same. The interval between the start times of two adjacent FBMC symbols is separated by the FBMC subcarrier. The setting of the decision. As shown in Figure 2, it is a schematic diagram of a FBMC signal. It should be noted that the "starting moment" in this paper is relative to a specific time point, for example, it may be a time point relative to the start of one subframe.

The OFDM signal is composed of OFDM symbols, and there is no overlap between any two adjacent OFDM symbols, and the OFDM symbol is composed of an OFDM effective symbol and a Cyclic Prefix (CP) corresponding to the OFDM effective symbol; The duration of the OFDM effective symbols is the same, and the duration of the CP is determined by the maximum multipath delay of the channel. As shown in Figure 3, it is a schematic diagram of an OFDM signal.

The duration of any FBMC symbol with any OFDM effective symbol The duration is the same; the frequency band occupied by the FBMC signal is different from the frequency band occupied by the OFDM signal.

The embodiment of the present invention does not limit the specific implementation method of generating the FBMC signal and the OFDM signal in the step 101, and can be implemented by using the method in the prior art.

102: adding a time domain guard interval in the FBMC signal, such that a first FBMC symbol in the FBMC signal after adding a time domain guard interval is aligned with a first OFDM effective symbol in the OFDM signal; The FBMC symbol is any FBMC symbol in the FBMC signal after the guard interval is added, and the first OFDM effective symbol is any OFDM effective symbol in the OFDM signal.

Exemplarily, the first FBMC symbol is aligned with the first OFDM effective symbol, specifically: the start time of the first FBMC symbol is the same as the start time of the first OFDM effective symbol, and the duration of the first FBMC symbol is The duration of an OFDM effective symbol is the same.

The first FBMC symbol may be any one of the FBMC signals after adding the time domain guard interval, and the first OFDM effective symbol may be any one of the OFDM effective symbols; wherein, the second corresponding to the first FBMC symbol The start of the FBMC symbol is before the start of the first OFDM effective symbol. The second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal before adding the time domain guard interval; the first FBMC symbol is the backward movement of the start time of the second FBMC symbol and the duration of the time domain guard interval FBMC symbols obtained after a time period of equal time. The duration of the first FBMC symbol is the same as the duration of the second FBMC symbol, and the signal in the first FBMC symbol is the same as the signal in the second FBMC symbol. As shown in Figure 4, it is a schematic diagram of the first FBMC symbol and the second FBMC symbol.

Before the step 102, the method may further include: determining the time domain guard interval; specifically, the following steps may be included: 1) -3):

1) Determine the duration of the time domain protection interval.

Exemplarily, the duration of the time domain guard interval is: The start of the second FBMC symbol The interval between the start time and the start time of the first OFDM effective symbol.

As shown in FIG. 5, the second FBMC symbol is the FBMC symbol 8, and the first OFDM effective symbol is the OFDM effective symbol 2. Obviously, the duration of the current domain guard interval is the start time of the FBMC symbol 8 and the OFDM effective symbol. At the interval between the start times of 2, the FBMC symbol 8 can be aligned with the OFDM effective symbol 2 after the time domain guard interval is added.

2) Determine the signal in the time domain guard interval.

Exemplarily, the signals in the time domain guard interval may include but are not limited to the following two implementations:

Manner 1, the signal in the time domain guard interval is zero.

The mode 2, the signal in the time domain guard interval is adjacent to the start time of the time domain guard interval, and the time interval between the time domain guard interval and the time domain guard interval A segment of the FBMC signal of the same time.

It should be noted that, in specific implementation, it may be generally considered that the duration of the time domain guard interval is less than the interval between the start time of the FBMC signal before the guard interval is added and the start time of the second FBMC symbol; that is, specific In the implementation scenario, mode 2 can be used to determine the signal in the guard interval.

3) Determine the starting time of the time domain protection interval.

Example 1: In the solution including the technical features of the foregoing mode 1, the transmitter may perform step 2) and then perform step 3), or perform step 3) and then perform step 2), and perform step 2) and steps simultaneously. 3).

As shown in Figure 6, the schematic of the FBMC signal with time domain guard interval added in Example 1 is shown. The start time of the time domain guard interval determined in step 3) may be: the start time of the second FBMC symbol (as shown in scene 1 in FIG. 6) or the start time of the second FBMC symbol. One moment (as shown in scene 2 in Figure 6).

It should be noted that, at any time after the start time of the second FBMC symbol, the first FBMC symbol cannot be compared with the first OFDM. Effect symbol alignment. The specific reasons are as follows: As shown in scenario 3 in Figure 6, the first FBMC symbol is distributed on both sides of the time domain guard interval, and the signal in the time domain guard interval (zero value) and the first duration of the first FBMC symbol The signals in are different, so the effect of aligning the first FBMC symbol with the first OFDM effective symbol cannot be achieved; wherein the duration of the first FBMC symbol is the first duration of the first FBMC symbol and the second of the first FBMC symbol The sum of the durations.

Example 2: In the solution including the technical features of the above mode 2, the transmitter first performs step 3) and then performs step 2). In this case, the step 102 may include: determining a start time of the time domain guard interval; and a time zone guard interval adjacent to a start time of the time domain guard interval before the start time of the copy time domain guard interval A segment of the FBMC signal before the guard interval is added for the same duration; the copied signal is filled into the time domain guard interval.

As shown in Figure 7, the schematic of the FBMC signal with time domain guard interval added in Example 2 is shown. The start time of the time domain guard interval determined in step 3) may be: a start time of the first OFDM effective symbol (as shown in scenario 1 in FIG. 7) or a start time of the first OFDM effective symbol. At any time (as shown in Scene 2 or Scene 3 in Figure 7).

It should be noted that, in scenario 2 of FIG. 7, in the FBMC signal after adding the time domain guard interval, although the first FBMC symbol is distributed on both sides of the time domain guard interval, the first duration of the first FBMC symbol The signal in the second duration of the time domain guard interval is the same, and the first duration of the first FBMC symbol is the same as the second duration of the time domain guard interval; therefore, the second duration of the time domain guard interval The signal in time is equivalent to the signal in the first duration of the first FBMC symbol, such that the signal in the second duration of the time domain guard interval and the signal in the second duration of the first FBMC symbol form a complete FBMC symbol, which is aligned with the first OFDM effective symbol.

In addition, it should be noted that the start time of the domain guard interval is at the first OFDM. At any time after the start of the valid symbol, the first FBMC symbol cannot be aligned with the first OFDM effective symbol. The specific reasons are as follows: As shown in scenario 4 in FIG. 7, even if the signal in the time domain guard interval is equivalent to the signal in the first duration of the first FBMC symbol, the first FBMC symbol is still split into two segments, ie The signal in the third duration of the first FBMC symbol and the signal in the fourth duration of the first FBMC symbol.

103: Combine the OFDM signal with the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal.

Exemplarily, the step 103 is specifically implemented as: directly adding the OFDM signal to the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal; and further implementing: when the OFDM signal and the OFDM signal are added When the FBMC signals after the domain guard interval are not zero, the OFDM signal is directly added to the FBMC signal after adding the time domain guard interval to obtain a multi-carrier signal at the moment; The zero-valued addition of the FBMC signal after the time domain guard interval or the OFBM signal of a non-zero value is directly used as the multi-carrier signal at that time.

After step 103, the transmitting party may send the multi-carrier signal to the receiver, so that the receiver obtains the FBMC signal in the multi-carrier signal and/or the OFDM signal in the multi-carrier signal by processing the multi-carrier signal; A method of processing a multi-carrier signal corresponding to the method for generating a multi-carrier signal provided by the embodiment is provided.

It should be noted that, in the process of the receiver processing the multi-carrier signal, the time domain guard interval needs to be removed (refer to the following embodiment 3 for details); when the duration of the domain guard interval is greater than the duration of the CP, the removal may be caused. After the time domain guard interval, the waveform of the OFDM signal in the multi-carrier signal is incomplete, thereby causing interference to the FBMC signal. In order to avoid the interference, on the basis of the technical features in the steps 101-103, the method may further comprise the following technical features: the start time of the second FBMC symbol and the start time of the CP corresponding to the first OFDM effective symbol the same. It should be noted that, in the optional manner, the duration of the time domain guard interval corresponds to the first OFDM effective symbol. The duration of the CP is the same; in addition, the method of determining the signal in the time domain guard interval can be referred to above.

Further, after step 102, the method may further include: transmitting, to the receiver, information of the time domain guard interval; and the information of the time domain guard interval is used to cause the receiver to remove the time domain guard interval. Optionally, the information about the time domain guard interval includes a duration of the time domain guard interval and a start time of the time domain guard interval.

Optionally, in order to reduce the interference of the OFDM signal on the FBMC signal after adding the guard interval in the multi-carrier signal, three optional methods are provided below:

In the first method, before the step 103, the method may further include: filtering the OFDM signal; in this manner, the step 103 may be implemented as: after the filtering the OFDM signal and adding the time domain guard interval The FBMC signal is synthesized to obtain a multi-carrier signal. For example, a specific implementation method of filtering an OFDM signal can refer to the prior art.

Manner 2: Before step 103, the method may further include: adding a frequency domain guard interval between a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal after adding a time domain guard interval.

Mode 3: Before step 102, the method may further include: adding a frequency domain guard interval between a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal.

The method for generating a multi-carrier signal provided by this embodiment, by adding a time domain guard interval in the FBMC signal, aligning one FBMC symbol in the FBMC signal with one OFDM effective symbol in the OFDM signal, and adding the OFDM signal and adding the time domain The FBMC signal after the guard interval is synthesized to obtain a multi-carrier signal. Using the multi-carrier signal generated by the method, the transmitting party can place the pilot in the frequency band occupied by the FBMC signal on the aligned FBMC symbol, and/or place the pilot in the frequency band occupied by the OFDM signal in the aligned OFDM. Symbolic; thus, when the receiver uses the pilot for channel measurement When the transmitter transmits the control signaling for the pilot in the aligned FBMC symbol or the control signaling for the pilot in the aligned OFDM effective symbol, the transmitting party can make the receiver use the multi-carrier signal. The carried pilot completes the channel measurement; in addition, the transmitting and receiving parties may also agree to include the aligned FBMC symbols of the pilot and/or the information of the OFDM effective symbols, so that the transmitting party does not need to send control signaling to the receiving party, so that the receiving party can Channel measurement is accomplished using pilots carried in the multi-carrier signal. Compared with the prior art, the design of the pilot can be simplified and the overhead of control signaling can be reduced.

Embodiment 2

This embodiment is based on a specific embodiment of the foregoing embodiment. For the related explanation in this embodiment, reference may be made to the foregoing first embodiment. The execution body of this embodiment is a transmitter.

As shown in FIG. 8, a method for generating a multi-carrier signal according to this embodiment includes:

801: Generate an FBMC signal and an OFDM signal; wherein, the frequency band occupied by the FBMC signal is different from the frequency band occupied by the OFDM signal; and the duration of the FBMC symbol in the FBMC signal is equal to the duration of the OFDM effective symbol in the OFDM signal.

802: Determine a second FBMC symbol in the FBMC signal and a first OFDM effective symbol in the OFDM signal; wherein, a duration of the second FBMC symbol is the same as a duration of the first OFDM effective symbol, and a start time of the second FBMC symbol Before the start time of the first OFDM effective symbol, the interval between the start time of the second FBMC symbol and the start time of the first OFDM effective symbol is the duration of the CP corresponding to the first OFDM effective symbol.

803: Determine a duration of the time domain guard interval; where the duration of the time domain guard interval is the same as the duration of the CP corresponding to the first OFDM effective symbol.

804: Determine a start time of the time domain guard interval. The start time of the time domain guard interval is the same as the start time of the CP corresponding to the first OFDM effective symbol.

805: before the start time of the copy time domain guard interval, before the start time of the time domain guard interval, and before the time interval of the time domain guard interval, the same guard interval interval A signal in the FBMC signal.

806: The copied signal is filled into the time domain guard interval to generate an FBMC signal after adding the time domain protection interval.

It should be noted that, after performing step 806, the start time of the second FBMC symbol moves backward and the time period equal to the duration of the time domain guard interval, and the first time is obtained.

FBMC symbol; the start time of the first FBMC symbol is the same as the start time of the first OFDM effective symbol.

As shown in FIG. 9, a schematic diagram of a method for adding a time domain guard interval is provided in this embodiment, where the second FMBC symbol is an FBMC symbol 8 and the first OFDM effective symbol is an OFDM effective symbol 2.

807: Add the OFDM signal to the FBMC signal after adding the time domain guard interval to obtain a multi-carrier signal.

It should be noted that, in this embodiment, since the start time of the time domain guard interval is the same as the start time of the CP, and the duration of the time domain guard interval is the same as the duration of the CP, the receiver processes the multi-carrier signal. In the process, even if the time domain guard interval is removed, the waveform of the OFDM signal in the multi-carrier signal is not incomplete, thereby reducing the OFDM signal generated by the FBMC signal. Therefore, in the embodiment, any one of the first to third modes described in the first embodiment may not be performed.

The method for generating a multi-carrier signal provided in this embodiment can simplify the design of the pilot and reduce the overhead of the control signaling; at the same time, can avoid the duration of the time domain guard interval in the process of processing the multi-carrier signal by the receiver The longer result is that the waveform of the OFDM signal in the multi-carrier signal after the time domain guard interval is removed is incomplete, resulting in a problem that the OFDM signal has a more serious interference to the FBMC signal.

Embodiment 3

The embodiment provides a method for processing a multi-carrier signal, which corresponds to the method for generating a multi-carrier signal provided in the first embodiment. For related explanations in this embodiment, reference may be made to the above-mentioned first embodiment. As shown in FIG. 10, a method for processing a multi-carrier signal according to this embodiment includes:

1001: Receive a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and an FBMC in the FBMC signal The duration of the symbol is the same as the duration of the OFDM effective symbol in the OFDM signal; the FBMC signal includes a time domain guard interval for using one of the FBMC signals and the FBMC symbol One OFDM effective symbol alignment in the OFDM signal.

Exemplarily, the method for processing a multi-carrier signal provided by this embodiment can be applied to a system using both FBMC technology and OFDM technology. The executor of the embodiment may be a receiver, and the receiver may be a base station, an AP, or a user equipment.

It should be noted that the "FBMC signal" constituting the multi-carrier signal described in this embodiment corresponds to the "FBMC signal after adding the time domain guard interval" described in the first embodiment, that is, the FBMC signal after the time domain guard interval is added. The "OFDM signal" constituting the multicarrier signal described in this embodiment corresponds to the "OFDM signal" described in the first embodiment. In addition, the "FBMC signal on the subcarrier" described hereinafter refers to the signal component of the FBMC signal on the subcarrier; the "OFDM signal on the subcarrier" described in this embodiment refers to the signal of the OFDM signal on the subcarrier. ingredient.

1002: Obtain information about the time domain guard interval.

Optionally, step 1002 can be implemented in the following two manners:

Manner 1: Receive information about the time domain guard interval sent by the transmitting party. Exemplarily, in specific implementation, the transmitting party may actively send the information of the time domain guard interval to the receiving party; or may send the message to the receiving party when receiving the request, the domain protection interval letter, the packet, and the message Domain protection interval information.

Mode 2: Read the preset information of the time domain guard interval. Exemplarily, the receiver can save the preset time domain guard interval information in its storage unit before leaving the factory. Medium.

1003: Remove the time domain guard interval according to the information about the time domain guard interval, and generate a first multi-carrier signal.

Optionally, the information about the time domain protection interval may include: a duration of the time domain protection interval and a start time of the time domain protection interval. In this case, step 1003 may be implemented as follows: The receiver removes the time from the start time of the time domain guard interval in the multi-carrier signal according to the duration of the time domain guard interval and the start time of the time domain guard interval. A signal of the same duration of the domain guard interval obtains the first multicarrier signal.

1004: Perform Fourier transform and FBMC subcarrier selection on the first multicarrier signal to obtain an FBMC signal on the subcarrier.

Illustratively, "FBMC subcarrier selection" is used to select the FBMC signal on the subcarrier from the multicarrier signal of the signal containing the FBMC according to the frequency of the subcarriers of the different signals.

Optionally, before the step 1004, the method may further include: filtering the first multi-carrier signal by using an analysis polyphase filter bank; in this case, step 1004 may be implemented as: A multicarrier signal is subjected to Fourier transform and FBMC subcarrier selection to obtain an FBMC signal on the subcarrier.

Optionally, step 1004 may include: performing Fourier transform, FBMC subcarrier selection, and frequency domain filtering on the first multicarrier signal to obtain an FBMC signal on the subcarrier.

Further, the method may further include: performing signal detection on the FBMC signal on the subcarrier to obtain information carried by the FBMC signal.

Optionally, the multi-carrier signal further includes an OFDM signal, where the OFDM signal includes a CP, and the method may further include: removing the CP to generate a second multi-carrier signal; performing Fu on the second multi-carrier signal The Fourier transform, OFDM subcarrier selection, obtains the OFDM signal on the subcarrier. Further, the method may further include: The OFDM signal performs signal detection to obtain information carried by the OFDM signal. Exemplarily, "OFDM subcarrier selection" is used to select an OFDM signal on a subcarrier from a multicarrier signal of a signal including OFDM according to a frequency difference of subcarriers of different signals.

It should be noted that the above-mentioned "Fourier transform for the first multi-carrier signal", "filtering the first multi-carrier signal by the analysis polyphase filter bank", "frequency domain filtering",

The specific implementations of "signal detection for FBMC signals", "signal detection for OFDM signals", and "removal of CP" can be referred to the prior art.

It should be noted that, in specific implementation, when receiving the multi-carrier signal, the receiver may acquire information carried by the one or more signals included in the multi-carrier signal according to the scheduling message. Specifically, the process of obtaining the information carried by a signal can refer to the prior art, and is not described here.

The scheduling message is a message that the transmitter determines, based on the system environment and the capabilities of the receiver, a signal indicating the location of the receiver information. For example, when the scheduling information is a message indicating that the signal of the receiver information is the FBMC signal, the receiver acquires information carried by the FBMC signal; when the scheduling information is a message indicating that the signal of the receiver information is the FBMC signal and the OFDM signal, The receiver acquires information carried by the FBMC signal and information carried by the OFDM signal. The receiver information is information carried on the FBMC signal and/or the OFDM signal.

The method for processing a multi-carrier signal provided in this embodiment corresponds to the method for generating a multi-carrier signal provided in the first embodiment, and the multi-carrier signal is generated by using the method provided in the first embodiment, and the transmitting party can use the FBMC signal in the frequency band occupied by the FBMC signal. The pilot is placed on the aligned FBMC symbol, and/or the pilot in the frequency band occupied by the OFDM signal is placed on the aligned OFDM effective symbol; thus, when the receiver uses the pilot for channel measurement, the transmitter only needs Sending control signaling for pilots in aligned FBMC symbols or control signaling for pilots in aligned OFDM effective symbols to the receiver, enabling the receiver to perform channel measurements using the pilots carried in the multi-carrier signal In addition, send and receive double The party may also stipulate information including the aligned FBMC symbols of the pilot and/or the OFDM effective symbols, so that the transmitting party does not need to send control signaling to the receiver, so that the receiver can complete the channel by using the pilot carried in the multi-carrier signal. measuring. Compared with the prior art, the design of the pilot can be simplified and the overhead of control signaling can be reduced.

Embodiment 4

The embodiment is a specific embodiment based on the foregoing embodiment 3. The related explanation in this embodiment may refer to the third embodiment. The execution body of the embodiment is a receiver. In this embodiment, the receiver acquires the FBMC signal. Information and information carried by OFDM signals.

As shown in FIG. 1 , a method for processing a multi-carrier signal according to this embodiment includes:

1 101: receiving a multi-carrier signal composed of an FBMC signal and an OFDM signal sent by a transmitting side; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, a duration of the FBMC symbol in the FBMC signal, and an OFDM effective symbol in the OFDM signal The duration is the same; the FBMC signal includes a time domain guard interval, and the time domain guard interval is used to align one FBMC symbol in the FBMC signal with one OFDM effective symbol in the OFDM signal, the duration of the time domain guard interval and the OFDM effective symbol The duration of the corresponding CP is the same.

After performing step 1 101, the receiver may first perform the process of "acquiring information carried by the FBMC signal (step 1 102 - step 1 104)" and then performing "acquiring information carried by the OFDM signal (step 1 105 - step 1 107)" The process may also be performed by performing a process of "acquiring information carried by the OFDM signal" and then performing "acquiring information carried by the FBMC signal"; the above two processes may also be performed simultaneously.

1 102 : Get information about the time domain guard interval.

1 103: The first multi-carrier signal is generated by removing the time domain guard interval in the multi-carrier signal according to the information of the time domain guard interval.

1 104: filtering the first multicarrier signal by using an analysis polyphase filter bank, and Fourier transform, FBMC subcarrier selection and signal detection are performed on the filtered first multicarrier signal to obtain information carried by the FBMC signal.

Illustratively, in general, as shown in FIG. 12, the receiver may perform an "equalization" action to eliminate the influence of the channel before performing the "Signal Detection" action after performing the "FBMC Subcarrier Selection" action. Of course, in the AWGN (Additive White Gaussion Noise) channel, the receiver does not need to perform the "equalization" action.

1 105 : Get information about the CP.

Exemplarily, the information of the CP may include the start time of the CP and the duration of the CP. Step 1105 can be specifically implemented as: reading the information of the preset CP. The receiver can save the information of the preset CP in its storage unit before leaving the factory.

1 106: The CP in the multi-carrier signal is removed according to the information of the CP, and the second multi-carrier signal is generated.

1 107: performing Fourier transform, OFDM subcarrier selection, and signal detection on the second multicarrier signal to obtain information carried by the OFDM signal.

Illustratively, in general, as shown in FIG. 12, after performing the "OFDM Subcarrier Selection" action, the receiver may perform an "equalization" action to eliminate the influence of the channel before performing the "Signal Detection" action. Of course, in the AWGN (Additive White Gaussion Noise) channel, the receiver does not need to perform the "equalization" action.

Optionally, as shown in FIG. 13, step 1104 may be replaced by step 1104A: 1 104A: performing Fourier transform, FBMC subcarrier selection, frequency domain filtering, and signal detection on the first multicarrier signal to obtain an FBMC signal. Carrying information.

Exemplarily, in general, as shown in FIG. 14, after performing the "FBMC subcarrier selection" action, the receiver can perform an "equalization" action to eliminate the channel influence before performing the "frequency domain filtering" action. Or, as shown in Figure 15, after performing the "frequency domain filtering" action, before performing the "signal detection" action, you can also execute "all The "balance" action is used to eliminate the effects of the channel. Of course, in the AWGN channel, the receiver does not need to perform an "equalization" action.

The method for processing a multi-carrier signal provided in this embodiment corresponds to the method for generating a multi-carrier signal provided in the second embodiment. Therefore, the pilot design can be simplified and the overhead of control signaling can be reduced. In the meantime, the method for processing a multi-carrier signal provided by this embodiment can avoid the serious interference of the OFDM signal on the FBMC signal in the process of processing the multi-carrier signal.

Embodiment 5

As shown in FIG. 16, a transmitting device 16 for performing the method for generating a multi-carrier signal shown in FIG. 1 according to an embodiment of the present invention includes:

a generating unit 161, configured to generate a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; the frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and the FBMC symbol in the FBMC signal The duration is the same as the duration of the OFDM effective symbol in the OFDM signal;

a first adding unit 162, configured to add a time domain guard interval in the FBMC signal, such that adding a first FBMC symbol in the FBMC signal after the time domain guard interval and a first OFDM effective symbol in the OFDM signal Aligning; the first FBMC symbol is any FBMC symbol in the FBMC signal after adding a guard interval, and the first OFDM effective symbol is any OFDM effective symbol in the OFDM signal;

The synthesizing unit 163 is configured to synthesize the OFDM signal and the FBMC signal after adding the time domain guard interval to obtain a multi-carrier signal.

Optionally, the duration of the time domain guard interval is: an interval between a start time of the second FBMC symbol and a start time of the first OFDM effective symbol; the second FBMC symbol is the FBMC An FBMC symbol in the signal corresponding to the first FBMC symbol.

Optionally, a start time of the second FBMC symbol and the first OFDM valid symbol The start time of the cyclic prefix CP corresponding to the number is the same; the second FBMC symbol is the FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

Optionally, the signal in the time domain guard interval is zero; or

The signal in the time domain guard interval is adjacent to the start time of the time domain guard interval, and is the same as the duration of the time domain guard interval. A segment of the FBMC signal.

Optionally, as shown in FIG. 17, the transmitter device 16 further includes:

The sending unit 164 is configured to send the information about the time domain guard interval to the receiver device, where the information about the time domain guard interval is used to remove the time domain guard interval.

Optionally, the information about the time domain guard interval includes: a duration of the time domain guard interval and a start time of the time domain guard interval.

Optionally, as shown in FIG. 17, the transmitter device 16 further includes:

a filtering unit 165, configured to filter the OFDM signal;

The synthesizing unit 163 is specifically configured to synthesize the filtered OFDM signal and the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal.

Optionally, as shown in FIG. 17, the transmitter device 16 further includes:

a second adding unit 166, configured to add a frequency domain guard interval between a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal after adding a time domain guard interval; or, a frequency band occupied by the OFDM signal A frequency domain guard interval is added between the frequency bands occupied by the FBMC signal.

In an exemplary, specific application, the transmitting device 16 may be embedded or may itself be a base station or access point or user equipment in a communication network.

The transmitting device provided by the embodiment of the present invention can simplify the design of the pilot and reduce the overhead of the control signaling. The specific analysis process can refer to the relevant part of the first embodiment.

Embodiment 6 In hardware implementation, the sending unit in Embodiment 5 may be a transmitter; the generating unit, the first adding unit, the synthesizing unit, the filtering unit, and the second adding unit may be embedded in hardware or independent of the processing of the transmitting device. In the device, it may also be stored in the memory of the transmitting device in software, so that the processor calls to perform the operations corresponding to the above units.

As shown in FIG. 18, a transmitting device 18 is provided for performing the method for generating a multi-carrier signal shown in FIG. 1 according to an embodiment of the present invention; the transmitting device 18 includes: a memory 181, a processor 182, and a bus system. 183 , where

The memory 181 is configured to store a set of codes; the code is used to control the processor 182 to perform the following actions:

Generating a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, a duration of an FBMC symbol in the FBMC signal, and the OFDM The duration of the OFDM effective symbols in the signal is the same;

Combining the OFDM signal with the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal;

The bus system 183 is used to couple the various components of the transmitter device 18, wherein the bus system 183 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, various buses are labeled as bus system 183 in the figure.

Exemplarily, the memory 181 may include a read only memory and a random access memory, and a part of the memory 181 may further include a nonvolatile random access memory. (NVRAM) The ₀ processor 182 can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like. In a specific application, the transmitting device 18 may be embedded or may itself be a base station or an access point or user equipment in a communication network.

Optionally, the start time of the second FBMC symbol is the same as the start time of the cyclic prefix CP corresponding to the first OFDM effective symbol; the second FBMC symbol is the first and the first FBMC signal. The FBMC symbol corresponding to the FBMC symbol.

Optionally, the signal in the time domain guard interval is zero; or

Optionally, as shown in FIG. 19, the transmitter device 18 further includes:

The transmitter 184 is configured to send information about the time domain guard interval to the receiver device, where the time domain guard interval information is used to enable the receiver device to remove the time domain guard interval.

Optionally, the processor 182 is further configured to: filter the OFDM signal, where the processor 182 is configured to: after the filtered OFDM signal and the added time domain guard interval, the FBMC signal Synthesis, resulting in a multi-carrier signal.

Optionally, the processor 182 is further configured to:

a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal Add a frequency domain guard interval between them.

Example 7

As shown in FIG. 20, a method for processing a multi-carrier signal shown in FIG. 10 is provided by a receiver device 20 according to an embodiment of the present invention, including:

The receiving unit 201 is configured to receive a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; the frequency band occupied by the FBMC signal is different from the frequency band occupied by the OFDM signal, and the FBMC The duration of the FBMC symbol in the signal is the same as the duration of the OFDM effective symbol in the OFDM signal; the FBMC signal includes a time domain guard interval, and the time domain guard interval is used to make one of the FBMC signals a symbol aligned with one of the OFDM effective symbols in the OFDM signal;

The acquiring unit 202 is configured to acquire information about the time domain guard interval.

a first removing unit 203, configured to remove the time domain guard interval according to the information of the time domain guard interval, to generate a first multi-carrier signal;

The processing unit 204 is configured to obtain, according to the first multicarrier signal, a FBMC signal on the subcarrier;

The processing unit 204 specifically includes:

a Fourier transform module 2041, configured to perform a Fourier transform on the first multicarrier signal;

The FBMC subcarrier selection module 2042 is configured to perform FBMC subcarrier selection on the Fourier transformed first multicarrier signal to obtain an FBMC signal on the subcarrier.

Optionally, the obtaining unit 202 is specifically configured to: Receiving information about the time domain guard interval sent by the transmitting device; or reading the preset information of the time domain guard interval.

Optionally, as shown in FIG. 21, the processing unit 204 further includes:

An analysis filtering module 2043, configured to filter the first multi-carrier signal by using an analysis polyphase filter bank;

The Fourier transform module 2041 is specifically configured to perform a Fourier transform on the filtered first multicarrier signal.

Optionally, the FBMC subcarrier selection module 2042 is configured to perform FBMC subcarrier selection on the first multicarrier signal after the Fourier transform to obtain an intermediate signal. As shown in FIG. 22, the processing unit 204 is configured. Also includes:

The frequency domain filtering module 2044 is configured to perform frequency domain filtering on the intermediate signal to obtain an FBMC signal on the subcarrier.

Optionally, the multi-carrier signal further includes an OFDM signal, and the OFDM signal includes a cyclic prefix CP. As shown in FIG. 20 or FIG. 21, the receiver device 20 further includes:

a second removing unit 205, configured to remove the CP, and generate a second multi-carrier signal; the Fourier transform module 2041 is further configured to perform a Fourier transform on the second multi-carrier signal;

The processing unit 204 further includes:

The OFDM subcarrier selection module 2045 is configured to perform OFDM subcarrier selection on the second multicarrier signal after Fourier transform to obtain an OFDM signal on the subcarrier.

In an exemplary, specific application, the recipient device 20 may be embedded or may itself be a base station or access point or user equipment in a communication network.

The receiver device provided by the embodiment of the present invention corresponds to the transmitter device provided by the foregoing embodiment. Therefore, the design of the pilot can be simplified, and the overhead of the control signaling can be reduced. The specific analysis process can refer to the foregoing embodiment. The relevant part of the third.

Example eight In a hardware implementation, the receiving unit in Embodiment 7 may be a receiver; the acquiring unit, the first removing unit, the processing unit, and the second removing unit may be embedded in hardware or in a processor independent of the receiving device. It may also be stored in the form of software in the memory of the receiving device, so that the processor calls to perform the operations corresponding to the above respective units.

As shown in FIG. 23, a receiver device 23 is provided for performing the method for processing a multi-carrier signal shown in FIG. 10 according to an embodiment of the present invention;

a receiver 23 1 , a memory 232 , a processor 233 , and a bus system 234 , wherein the receiver 23 1 is configured to receive a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal The frequency band occupied by the FBMC signal is different from the frequency band occupied by the OFDM signal, and the duration of the FBMC symbol in the FBMC signal is the same as the duration of the OFDM effective symbol in the OFDM signal; a domain guard interval, the time domain guard interval being used to align one FBMC symbol in the FBMC signal with one OFDM effective symbol in the OFDM signal;

The memory 232 is configured to store a set of codes; the code is used to control the processor 233 to perform the following actions:

Obtaining information about the time domain guard interval;

Performing Fourier transform and FBMC subcarrier selection on the first multicarrier signal to obtain an FBMC signal on the subcarrier;

The bus system 234 is used to couple the various components of the receiver device 23, wherein the bus system 234 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, various buses are labeled as bus system 234 in the figure.

Exemplarily, the memory 232 may include a read only memory and a random access memory. A portion of the memory 232 may also include non-volatile random access memory (NVRAM). Process 233 can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like. In a specific application, the receiver device 23 may be embedded or may itself be a base station or an access point or user equipment in the communication network.

Optionally, the receiver 23 1 is further configured to: receive information about the time domain guard interval sent by the transmitting device; or

The processor 233 is specifically configured to: read the preset information of the time domain guard interval.

Optionally, the processor 233 is further configured to: filter the first multi-carrier signal by using an analysis polyphase filter bank;

The processor 233 is specifically configured to perform Fourier transform and FBMC subcarrier selection on the filtered first multicarrier signal to obtain an FBMC signal on the subcarrier.

Optionally, the processor 233 is configured to perform Fourier transform, FBMC subcarrier selection, and frequency domain filtering on the first multicarrier signal to obtain an FBMC signal on the subcarrier.

Optionally, the multi-carrier signal further includes an orthogonal frequency division multiplexing OFDM signal, where the OFDM signal includes a cyclic prefix CP; and the processor 233 is further configured to:

Removing the CP to generate a second multi-carrier signal;

The receiver device provided by the embodiment of the present invention corresponds to the transmitter device provided by the foregoing embodiment. Therefore, the design of the pilot can be simplified, and the overhead of the control signaling can be reduced. The specific analysis process can refer to the foregoing embodiment. The relevant part of the third. It will be apparent to those skilled in the art that, for convenience and brevity of description, For the specific working process of the device and the unit described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or It can be integrated into another device or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as the units may or may not be physical units, and may be located in one place or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiment of the present embodiment.

In addition, each functional unit in various embodiments of the present invention may be integrated into one processing unit, or may be a single physical unit, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or an optical disk, and the like, which can store program codes. Introduction It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Claim

A method for generating a multi-carrier signal, comprising:

The OFDM signal is combined with the FBMC signal after the addition of the time domain guard interval to obtain a multicarrier signal.

2. The method according to claim 1, wherein the duration of the time domain guard interval is: an interval between a start time of the second FBMC symbol and a start time of the first OFDM effective symbol. The second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

The method according to claim 1 or 2, wherein the start time of the second FBMC symbol is the same as the start time of the cyclic prefix CP corresponding to the first OFDM effective symbol; the second FBMC symbol An FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

4. A method according to any one of claims 1 - 3, characterized in that

The method according to any one of claims 1 to 4, wherein the FBMC signal after the OFDM signal is added with an added time domain guard interval is synthesized, After the multi-carrier signal is obtained, the method further includes:

Sending information of the time domain guard interval to the receiver; the time domain guard interval information is used to cause the receiver to remove the time domain guard interval.

The method according to claim 5, wherein the information of the time domain protection interval comprises: a duration of the time domain guard interval and a start time of the time domain guard interval.

The method according to any one of claims 1 to 6, wherein after the OFDM signal is combined with the FBMC signal after adding a time domain guard interval to obtain a multicarrier signal, The method also includes:

Filtering the OFDM signal;

And synthesizing the OFDM signal and the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal, including:

Before adding the time domain guard interval to the FBMC signal, the method further comprises: adding a frequency domain guard interval between a frequency band occupied by the OFDM signal and a frequency band occupied by the FBMC signal.

9. A method of processing a multi-carrier signal, comprising:

Receiving a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and an FBMC symbol in the FBMC signal The duration is the same as the duration of the OFDM effective symbol in the OFDM signal; the FBMC letter The number includes a time domain guard interval for aligning one FBMC symbol in the FBMC signal with one OFDM effective symbol in the OFDM signal; acquiring information of the time domain guard interval;

Deleting the time domain guard interval according to the information of the time domain guard interval to generate a first multicarrier signal;

The method according to claim 9, wherein the information of the time domain protection interval comprises: a duration of the time domain guard interval and a start time of the time domain guard interval.

The method according to claim 9 or 10, wherein the acquiring the information about the time domain guard interval comprises:

Receiving information about the time domain guard interval sent by the transmitting party; or

Reading the preset information of the time domain guard interval.

The method according to any one of claims 9 to 11, wherein the FBMC signal on the subcarrier is obtained by performing Fourier transform and FBMC subcarrier selection on the first multicarrier signal. Previously, the method further includes:

The first multi-carrier signal is filtered by the analysis polyphase filter bank; the Fourier transform and the FBMC sub-carrier selection are performed on the first multi-carrier signal to obtain an FBMC signal on the sub-carrier, including:

The method according to any one of claims 9 to 11, wherein the performing Fourier transform and FBMC subcarrier selection on the first multicarrier signal to obtain an FBMC signal on a subcarrier, Includes:

Performing Fourier transform, FBMC subcarrier selection, and frequency domain filtering on the first multicarrier signal to obtain an FBMC signal on the subcarrier.

The method according to any one of claims 9 to 13, wherein the multicarrier signal further comprises an orthogonal frequency division multiplexing OFDM signal, the OFDM signal comprising a cyclic prefix CP; :

Removing the CP to generate a second multi-carrier signal;

15. A transmitter device, characterized by comprising:

a generating unit, configured to generate a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; the frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and the FBMC symbol in the FBMC signal continues The time is the same as the duration of the OFDM effective symbol in the OFDM signal;

a first adding unit, configured to add a time domain guard interval in the FBMC signal, so that a first FBMC symbol in the FBMC signal after adding a time domain guard interval is aligned with a first OFDM effective symbol in the OFDM signal The first FBMC symbol is any FBMC symbol in the FBMC signal after adding a guard interval, the first OFDM effective symbol is any OFDM effective symbol in the OFDM signal; a synthesizing unit, configured to The OFDM signal is combined with the FBMC signal after adding a time domain guard interval to obtain a multi-carrier signal.

The transmitter device according to claim 15, wherein the duration of the time domain guard interval is: between a start time of the second FBMC symbol and a start time of the first OFDM effective symbol The second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

The transmitting device according to claim 15 or 16, wherein a starting moment of the second FBMC symbol is the same as a starting moment of the cyclic prefix CP corresponding to the first OFDM effective symbol; The FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

18. A transmitter device according to any of claims 15-17, wherein The signal in the time domain guard interval is adjacent to the start time of the time domain guard interval, and is the same as the duration of the time domain guard interval. A segment of the FBMC signal.

The transmitter device according to any one of claims 15 to 18, wherein the transmitter device further comprises:

And a sending unit, configured to send information about the time domain guard interval to the receiver device; the information of the time domain guard interval is used to enable the receiver device to remove the time domain guard interval.

The transmitter device according to claim 19, wherein the information of the time domain guard interval comprises: a duration of the time domain guard interval and a start time of the time domain guard interval.

The transmitter device according to any one of claims 15 to 20, wherein the transmitter device further comprises:

a filtering unit, configured to filter the OFDM signal;

23. A receiver device, comprising:

a receiving unit, configured to receive a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, and the FBMC signal The duration of the FBMC symbol in the same is the duration of the OFDM effective symbol in the OFDM signal; The FBMC signal includes a time domain guard interval, the time domain guard interval being used to cause the

One FBMC symbol in the FBMC signal is aligned with an OFDM effective symbol in the OFDM signal;

a processing unit, configured to obtain, according to the first multicarrier signal, a FBMC signal on a subcarrier;

The processing unit specifically includes:

a Fourier transform module, configured to perform Fourier transform on the first multicarrier signal; and an FBMC subcarrier selection module, configured to perform FBMC subcarrier selection on the first multicarrier signal after Fourier transform, The FBMC signal on the subcarrier is obtained.

The receiver device according to claim 23, wherein the information of the time domain guard interval comprises: a duration of the time domain guard interval and a start time of the time domain guard interval.

The receiving device according to claim 23 or 24, wherein the obtaining unit is specifically configured to:

The receiver device according to any one of claims 23 to 25, wherein the processing unit further comprises:

The receiver device according to any one of claims 23 to 25, wherein the FBMC subcarrier selection module is configured to perform the Fourier-transformed first multicarrier The signal is selected by the FBMC subcarrier to obtain an intermediate signal;

The processing unit further includes:

The frequency domain filtering module is configured to perform frequency domain filtering on the intermediate signal to obtain an FBMC signal on the subcarrier.

The receiver device according to any one of claims 23 to 27, wherein the multicarrier signal further comprises an orthogonal frequency division multiplexing OFDM signal, the OFDM signal comprising a cyclic prefix CP; the receiving The party device also includes:

The processing unit further includes:

29. A transmitter device, comprising: a memory and a processor, wherein

Combining the OFDM signal with the FBMC signal after adding a time domain guard interval Into, get a multi-carrier signal.

The transmitter device according to claim 29, wherein the duration of the time domain guard interval is: between a start time of the second FBMC symbol and a start time of the first OFDM effective symbol The second FBMC symbol is an FBMC symbol corresponding to the first FBMC symbol in the FBMC signal.

The transmitter device according to claim 29 or 30, wherein a start time of the second FBMC symbol is the same as a start time of the cyclic prefix CP corresponding to the first OFDM effective symbol; The two FBMC symbols are FBMC symbols corresponding to the first FBMC symbol in the FBMC signal.

The transmitter device according to any one of claims 29 to 3, wherein the signal in the time domain guard interval is before the start time of the time domain guard interval, and the time A segment of the FBMC signal adjacent to the start of the domain guard interval that is the same duration as the time domain guard interval.

The transmitter device according to any one of claims 29 to 32, wherein the transmitter device further comprises:

And a transmitter, configured to send information about the time domain guard interval to the receiver device, where the time domain guard interval information is used to enable the receiver device to remove the time domain guard interval.

The transmitter device according to claim 33, wherein the information of the time domain guard interval comprises: a duration of the time domain guard interval and a start time of the time domain guard interval.

The transmitter device according to any one of claims 29 to 34, wherein the processor is further configured to: filter the OFDM signal;

The transmitter device according to any one of claims 29 to 35, wherein the processor is further configured to:

37. A receiver device, comprising: a receiver, a memory, and a processor; wherein

The receiver is configured to receive a multi-carrier signal composed of a filter bank multi-carrier FBMC signal and an orthogonal frequency division multiplexing OFDM signal; a frequency band occupied by the FBMC signal is different from a frequency band occupied by the OFDM signal, The duration of the FBMC symbol in the FBMC signal is the same as the duration of the OFDM effective symbol in the OFDM signal; the FBMC signal includes a time domain guard interval, the time domain guard interval being used to cause one of the FBMC signals FBMC symbols are aligned with one OFDM effective symbol in the OFDM signal;

Obtaining information about the time domain guard interval;

The receiver device according to claim 37, wherein the information of the time domain guard interval comprises: a duration of the time domain guard interval and a start time of the time domain guard interval.

The receiver device according to claim 37 or 38, wherein the receiver is further configured to: receive information about the time domain guard interval sent by the transmitter; or

The processor is specifically configured to: read preset information about the time domain guard interval.

40. A receiver device according to any of claims 37-39, characterized in that The processor is further configured to filter the first multi-carrier signal by using an analysis polyphase filter bank;

The processor is specifically configured to perform Fourier transform and FBMC subcarrier selection on the filtered first multicarrier signal to obtain an FBMC signal on the subcarrier.

The receiver device according to any one of claims 37 to 39, wherein the processor is specifically configured to perform Fourier transform on the first multicarrier signal,

The FBMC subcarrier selection and frequency domain filtering obtain the FBMC signal on the subcarrier.

The receiver device according to any one of claims 37 to 41, wherein the multicarrier signal further comprises an orthogonal frequency division multiplexing OFDM signal, the OFDM signal comprising a cyclic prefix CP; Also used to:

Removing the CP to generate a second multi-carrier signal;