CN103220090A - Codebook feedback method, signal receiving device, signal transmission method and signal transmission device - Google Patents

Abstract

The invention discloses a codebook feedback method, a signal receiving device, a signal transmission method and a signal transmission device. The signal transmission method comprises the steps of a. selecting a plurality of first matrixes from a preset first codebook and selecting a plurality of second matrixes form a preset second codebook when a signal transmitting side needs to transmit signals to a signal receiving side in a 3-dimensional multiple-input-multiple-output (3D MIMO) system; b. conducting weighted processing to a signal matrix which is transmitted to the signal receiving side according to the plurality of selected first matrixes and second matrixes; and c. transmitting the signals after weighted processing to the signal receiving side. The signal transmission method achieves signal transmission between the signal transmitting side and the signal receiving side in the 3D MIMO system.

Description

Codebook feedback method, signal receiving device, signal sending method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a codebook feedback method, a signal receiving apparatus, a signal sending method, and a signal sending apparatus.

Background

Multiple-Input-Multiple-Output (MIMO) technology is one of the key technologies of mainstream wireless communication systems at present. The space division characteristic of the MIMO system can enable the system to support a plurality of data streams, the throughput of the system is improved, the diversity characteristic of the MIMO system can improve the reliability of system transmission, and the user experience is improved.

Currently, the MIMO technology is two-dimensional (2D Dimensions) MIMO technology, and as shown in fig. 1, when a signal sender uses M transmit antennas, the precoding/beamforming technology performs weighting processing on signals corresponding to the M transmit antennas to match a current channel, so as to improve system performance.

With the advancement of hardware technology, the extension of MIMO technology from 2D to three-dimensional (3D, 3Dimensions) will become a reality in the future. In the 3D MIMO technology, each antenna is composed of K small elements (which may be referred to as antenna elements), as shown in fig. 2, a 3D MIMO system may directly control each antenna element through baseband processing, and at this time, the precoding/beamforming technology may perform weighting processing on signals corresponding to M × K antenna elements. Compared with the 2D MIMO technology, the 3D MIMO technology can dynamically change a part of bandwidth or a downtilt angle of the whole antenna through processing of baseband signals, on one hand, energy of signals received by a current user can be improved, and on the other hand, interference between systems can be effectively suppressed, so that overall performance of a wireless network can be improved.

However, the prior art has not proposed a specific implementation scheme for transmitting signals between a signal transmitter and a signal receiver in a 3D MIMO system.

Disclosure of Invention

The embodiment of the invention provides a codebook feedback method, a signal receiving device, a signal sending method and a signal receiving device, and provides a specific implementation scheme for signal transmission between a signal sending party and a signal receiving party in a 3D MIMO system.

The technical scheme of the embodiment of the invention is as follows:

a codebook feedback method in a three-dimensional multiple-input multiple-output (3D MIMO) system comprises the following steps: a signal receiving party in the 3D MIMO system selects a plurality of first matrixes from a preset first codebook set and selects a plurality of second matrixes from a preset second codebook set; and sending the selected matrix identifier of the first matrix and the selected matrix identifier of the second matrix to a signal sending party.

A signal receiving apparatus in a three-dimensional multiple-input multiple-output (3D MIMO) system, comprising: the device comprises a first matrix selection unit, a second matrix selection unit and a control unit, wherein the first matrix selection unit is used for selecting a plurality of first matrixes from a preset first codebook set; the second matrix selection unit is used for selecting a plurality of second matrixes from a preset second codebook set; and the sending unit is used for sending the matrix identifier of the first matrix selected by the first matrix selecting unit and the matrix identifier of the second matrix selected by the second matrix selecting unit to the signal sending device.

A signal transmission method in a three-dimensional multiple-input multiple-output (3D MIMO) system, the method comprising the steps of: when a signal sending party in a 3D MIMO system needs to send signals to a signal receiving party, selecting a plurality of first matrixes from a preset first codebook set, and selecting a plurality of second matrixes from a preset second codebook set; according to the selected first matrixes and the second matrixes, carrying out weighting processing on the signal matrixes to be sent to the signal receiving party; and transmitting each signal obtained after the weighting processing to the signal receiving party.

A signal transmission apparatus in a three-dimensional multiple-input multiple-output (3D MIMO) system, comprising: the signal transmitting device comprises a first matrix selecting unit, a second matrix selecting unit and a signal receiving unit, wherein the first matrix selecting unit is used for selecting a plurality of first matrixes from a preset first codebook set when the signal transmitting device needs to transmit signals to the signal receiving device; the second matrix selection unit is used for selecting a plurality of second matrixes from a preset second codebook set when the signal sending device needs to send signals to the signal receiving device; the weighting processing unit is used for carrying out weighting processing on the signal flow which needs to be sent to the signal receiving device according to the first matrix selected by the first matrix selecting unit and the second matrix selected by the second matrix selecting unit; and the signal sending unit is used for sending each signal obtained after the weighting processing unit carries out weighting processing to the signal receiving device.

In the technical scheme of the embodiment of the invention, a first codebook set and a second codebook set are preset for a 3D MIMO system, the first codebook set comprises a plurality of preset first matrixes, the second codebook set comprises a plurality of preset second matrixes, when a signal sender in the 3D MIMO system needs to send signals to a signal receiver, the first matrixes are selected from the first codebook set, the second matrixes are selected from the second codebook set, the signal matrixes needing to be sent to the signal receiver are weighted according to the selected first matrixes and the second matrixes, and then the signals obtained after weighting are sent to the signal receiver. Therefore, the embodiment of the invention provides a specific implementation scheme for transmitting signals between a signal sending party and a signal receiving party in a 3d mimo system, which can effectively reduce the overhead of codebook feedback, improve the system performance and reduce the overall complexity of system implementation.

Drawings

Fig. 1 is a schematic diagram of a transmitting antenna structure of a 2D MIMO system in the prior art;

fig. 2 is a schematic diagram of a transmitting antenna structure of a 3D MIMO system in the prior art;

fig. 3 is a flowchart illustrating a codebook feedback method in a 3D MIMO system according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a signal receiving apparatus in a 3D MIMO system according to a second embodiment of the present invention;

fig. 5 is a schematic flow chart of a signal transmission method in a 3D MIMO system according to a third embodiment of the present invention;

fig. 6 is a schematic structural diagram of a signal transmitting apparatus in a 3D MIMO system according to a fourth embodiment of the present invention.

Detailed Description

The main implementation principle, the specific implementation mode and the corresponding beneficial effects of the technical scheme of the embodiment of the invention are explained in detail in the following with the accompanying drawings.

Example one

As shown in fig. 3, a flowchart of a codebook feedback method in a 3D MIMO system according to an embodiment of the present invention is provided, and the specific processing procedure is as follows:

in step 31, a signal receiving side in the 3D MIMO system selects a number of first matrices from a preset first codebook set and a number of second matrices from a preset second codebook set.

A signal transmitter in the 3D MIMO system may be a base station, and then a corresponding signal receiver is a User Equipment (UE), and a signal transmitter may also be a UE, and then a corresponding signal receiver is a base station.

The Signal receiver may, but is not limited to, select the first matrix and the second matrix according to a predetermined selection criterion, where the selection criterion may be maximum capacity, minimum Interference, or highest Signal to Interference plus Noise Ratio (SINR).

It is assumed that a signal sender in a 3D MIMO system employs M transmitting antennas, each transmitting antenna is composed of K antenna elements, and its corresponding number is (x, y), where x corresponds to the number of the transmitting antenna to which the antenna element belongs (x is 1.. times, M), and y corresponds to the number of the antenna element on the transmitting antenna (y is 1.. times, K), as shown in fig. 2, antenna array subsets in the same horizontal direction (the same row) are combined as (1, y), (2, y),. times, (M, y), and y corresponds to the row.

In the first embodiment of the present invention, two different codebook sets, a first codebook set C1 and a second codebook set C2, are preset for a 3D MIMO system, specifically:

1. the first codebook set C1 includes T first matrix subsets, T ≦ K, each first matrix subset is denoted as Pi (i ═ 1.,. T), each first matrix subset includes a plurality of first matrices for weighting signals corresponding to K antenna arrays of one transmit antenna, where each first matrix subset corresponds to a row number of a signal matrix received by a signal receiving side, for example, the first matrix subset P1 corresponds to a row number 1 (i.e., the row number of the signal matrix is 1), the first matrix subset P2 corresponds to a row number 2 (i.e., the row number of the signal matrix is 2), and so on, the first matrix subset Pi corresponds to a row number i (i.e., the row number in the signal matrix is i).

When the signal receiving party selects a plurality of first matrixes from the first codebook set C1, first, according to the number of rows of the signal matrix to be received, a first matrix subset corresponding to the number of rows of the signal matrix to be received is selected from a plurality of first matrix subsets included in the first codebook set, and a plurality of first matrixes are selected from the selected first matrix subset.

The number of rows of each first matrix in each first matrix subset is K, and the number of columns is the number of rows of the antenna elements included in each transmitting antenna of the signal transmitting side, for example, the size of each first matrix in the first matrix subset P1 is K × 1, the size of each first matrix in the first matrix subset P2 is K × 2, and so on, and the size of each first matrix in the first matrix subset Pi is K × i.

2. The second codebook set C2 includes G second matrix subsets, G ≦ M, each second matrix subset is denoted as Ri (i ═ 1. > G), each second matrix subset includes a plurality of second matrices for weighting signals corresponding to M antenna arrays in the same horizontal direction (in the same row), where each second matrix subset corresponds to the number of columns of the signal matrix received by the signal receiving side, for example, the second matrix subset R1 corresponds to the number of columns 1 (i.e., the number of columns of the signal matrix is 1), the second matrix subset R2 corresponds to the number of columns 2 (i.e., the number of columns of the signal matrix is 2), and so on, the second matrix subset Ri corresponds to the number of columns i (i.e., the number of columns in the signal matrix is i).

When the signal receiver selects a plurality of second matrices from the second codebook set C2, first, according to the number of columns of the signal matrix to be received, a second matrix subset corresponding to the number of columns of the signal matrix to be received is selected from a plurality of second matrix subsets included in the second codebook set, and a plurality of second matrices are selected from the selected second matrix subset.

The number of rows of each second matrix in each second matrix subset is M, and the number of columns is the number of columns of the signal matrix received by the signal receiver, for example, the size of each second matrix in the first matrix subset R1 is M × 1, the size of each second matrix in the second matrix subset R2 is M × 2, and so on, the size of each second matrix in the second matrix subset Ri is M × i.

Each first matrix in the first codebook set C1 has a corresponding number, i.e., a corresponding matrix id, and each second matrix in the second codebook set C2 also has a corresponding number, i.e., a corresponding matrix id.

In the first embodiment of the present invention, when the signal receiving party selects a plurality of first matrices from the first codebook set C1, the following three ways may be adopted:

1. the signal receiving party selects a first matrix from a preset first codebook set C1;

2. the signal receiving side selects J first matrixes from a preset first codebook set C1, wherein J is the column number of the signal matrix received by the signal receiving side;

3. the signal reception side selects M first matrices from a preset first codebook set C1.

When the signal receiver selects several second matrices from the second codebook set C2, there may be the following three ways:

1. the signal receiving party selects a second matrix from a preset second codebook set C2;

2. the signal receiving party selects K second matrixes from a preset second codebook set C2;

3. and the signal receiving party selects I second matrixes from a preset second codebook set, wherein I is the row number of the signal matrixes received by the signal receiving party.

In the first embodiment of the present invention, there are seven methods for feeding back a codebook by a signal transmitter in a signal receiving direction:

the first feedback mode: the signal receiving party selects a first matrix from a preset first codebook set C1 and selects a second matrix from a preset second codebook set C2;

the second feedback mode: the signal receiving party selects J first matrixes from a preset first codebook set C1 and selects one second matrix from a preset second codebook set C2;

the third feedback mode is as follows: the signal receiving party selects a first matrix from a preset first codebook set C1, and selects K second matrices from a preset second codebook set C2;

the fourth feedback mode: the signal receiving party selects J first matrixes from a preset first codebook set C1 and K second matrixes from a preset second codebook set C2;

the fifth feedback mode: the signal receiving party selects M first matrixes from a preset first codebook set C1 and selects one second matrix from a preset second codebook set C2;

the sixth feedback mode: the signal receiving party selects a first matrix from a preset first codebook set C1, and selects I second matrices from a preset second codebook set C2;

the seventh feedback mode: the signal receiving side selects M first matrices from a preset first codebook set C1 and I second matrices from a preset second codebook set C2.

And step 32, sending the matrix identifier of the selected first matrix and the matrix identifier of the selected second matrix to the signal sending party.

The signal receiver may perform codebook feedback periodically, the first codebook set C1 and the second codebook set C2 correspond to the same feedback period, for example, the matrix id of the first matrix and the matrix id of the second matrix are fed back simultaneously, the first codebook set C1 and the second codebook set C2 may also correspond to different feedback periods, for example, the feedback period of the first codebook set C1 may be an integer multiple of the feedback period of the second codebook set C2.

If a signal receiving party selects one first matrix, the matrix identifier of the selected first matrix is sent to a signal sending party, if M or J first matrices are selected, the matrix identifier corresponding to each selected first matrix is sent to the signal sending party, and similarly, if a signal receiving party selects one second matrix, the matrix identifier of the selected second matrix is sent to the signal sending party, and if K or I second matrices are selected, the matrix identifier corresponding to each selected second matrix is sent to the signal sending party.

If the first codebook set C1 and the second codebook set C2 remain unchanged in the entire 3D MIMO system, the signal receiver and the signal transmitter may pre-store the first codebook set C1 and the second codebook set C2, and may subsequently directly use the pre-stored first codebook set C1 and second codebook set C2 for codebook feedback; in addition, the signal receiving side and the signal transmitting side may also acquire the first codebook set C1 and the second codebook set C2 from the network device at regular time.

In addition, in the first embodiment of the present invention, the signal receiving side may perform codebook feedback based on a full bandwidth, or perform codebook feedback based on a subband, and preset each subband for performing codebook feedback, when the signal receiving side selects the first matrix and the second matrix, for each preset subband, respectively select a plurality of first matrices from a preset first codebook set, and select a plurality of second matrices from a preset second codebook set, and then, for each preset subband, respectively send a matrix identifier of the selected first matrix and a matrix identifier of the selected second matrix for the subband to the signal sending side.

Example two

Corresponding to the codebook feedback method in the 3D MIMO system provided in the first embodiment of the present invention, a second embodiment of the present invention provides a signal receiving apparatus in the 3D MIMO system, whose structure is shown in fig. 4, including:

a first matrix selecting unit 41, configured to select a plurality of first matrices from a preset first codebook set;

a second matrix selecting unit 42, configured to select a plurality of second matrices from a preset second codebook set;

a sending unit 43, configured to send the matrix identifier of the first matrix selected by the first matrix selecting unit 41 and the matrix identifier of the second matrix selected by the second matrix selecting unit 42 to a signal sending apparatus.

Preferably, the first codebook set includes a plurality of first matrix subsets, each first matrix subset includes a plurality of first matrices, each first matrix subset corresponds to the number of rows of the signal matrix received by the signal receiving side, the number of rows of each first matrix in the first matrix subset is the number of antenna arrays included in each transmitting antenna of the signal transmitting side, and the number of columns is the number of rows of the signal matrix received by the signal receiving side;

the first matrix selection unit 41 specifically includes:

the first matrix subset selecting subunit is configured to select, according to the number of rows of a signal matrix that needs to be received by the signal receiving apparatus, a first matrix subset corresponding to the number of rows of the signal matrix that needs to be received from among a plurality of first matrix subsets included in a first codebook set;

and the first matrix selection subunit is used for selecting a plurality of first matrixes from the first matrix subset selected by the first matrix subset selection subunit.

Preferably, the second codebook set includes a plurality of second matrix subsets, each of the second matrix subsets includes a plurality of second matrices, each of the second matrix subsets corresponds to the number of columns of the signal matrix received by the signal receiver, the number of rows of each of the second matrices in the second matrix subsets is the number of transmitting antennas of the signal transmitter, and the number of columns is the number of columns of the signal matrix received by the signal receiver;

the second matrix selecting unit 42 specifically includes:

a second matrix subset selecting subunit, configured to select, according to the number of columns of the signal matrix that needs to be received by the signal receiving apparatus, a second matrix subset corresponding to the number of columns of the signal matrix that needs to be received, from among a plurality of second matrix subsets included in a second codebook set;

and the second matrix selection subunit is used for selecting a plurality of second matrixes from the second matrix subset selected by the second matrix subset selection subunit.

Preferably, the first matrix selecting unit 41 is specifically configured to select, for each preset subband, a plurality of first matrices from a preset first codebook set;

a second matrix selecting unit 42, configured to specifically select, for each preset subband, a plurality of second matrices from a preset second codebook set;

the sending unit 43 is specifically configured to send, for each preset subband, a matrix identifier of a first matrix selected by the first matrix selecting unit for the subband and a matrix identifier of a second matrix selected by the second matrix selecting unit for the subband to the signal sending party, respectively.

Preferably, the first matrix selecting unit 41 is specifically configured to select a first matrix from a preset first codebook set;

the second matrix selecting unit 42 is specifically configured to select a second matrix from a preset second codebook set.

Preferably, the first matrix selecting unit 41 is specifically configured to select J first matrices from a preset first codebook set, where J is the number of columns of a signal matrix received by the signal receiving side;

the second matrix selecting unit 42 is specifically configured to select a second matrix from a preset second codebook set.

Preferably, the first matrix selecting unit 41 is specifically configured to select a first matrix from a preset first codebook set;

the second matrix selecting unit 42 is specifically configured to select K second matrices from a preset second codebook set, where K is the number of antenna elements included in each antenna of the signal sender.

Preferably, the first matrix selecting unit 41 is specifically configured to select J first matrices from a preset first codebook set, where J is the number of columns of a signal matrix received by the signal receiving side;

the second matrix selecting unit 42 is specifically configured to select K second matrices from a preset second codebook set, where K is the number of antenna elements included in each antenna of the signal sender.

Preferably, the first matrix selecting unit 41 is specifically configured to select M first matrices from a preset first codebook set, where M is the number of transmitting antennas of the signal sender;

the second matrix selecting unit 42 is specifically configured to select a second matrix from a preset second codebook set.

Preferably, the first matrix selecting unit 41 is specifically configured to select a first matrix from a preset first codebook set;

the second matrix selecting unit 42 is specifically configured to select I second matrices from a preset second codebook set, where I is a row number of a signal matrix received by the signal receiving side.

Preferably, the first matrix selecting unit 41 is specifically configured to select M first matrices from a preset first codebook set, where M is the number of transmitting antennas of the signal sender;

the second matrix selecting unit 42 is specifically configured to select I second matrices from a preset second codebook set, where I is a row number of a signal matrix received by the signal receiving side.

EXAMPLE III

As shown in fig. 5, a flowchart of a signal transmission method in a 3D MIMO system according to a third embodiment of the present invention is specifically shown as follows:

step 51, when a signal sender in the 3D MIMO system needs to send a signal to a signal receiver, selecting a plurality of first matrices from a preset first codebook set, and selecting a plurality of second matrices from a preset second codebook set;

the signal transmitter in the 3D MIMO system may be a base station, and then the corresponding signal receiver is UE, and the signal transmitter may also be UE, and then the corresponding signal receiver is the base station.

The first codebook set mentioned in the third embodiment of the present invention is consistent with the first codebook set C1 in the first embodiment of the present invention, and the second codebook set mentioned in the third embodiment of the present invention is consistent with the second codebook set C2 in the first embodiment of the present invention, which is not described herein again.

In the third embodiment of the present invention, when a signal sender in a 3D MIMO system needs to send a signal to a signal receiver, a number of first matrices may be directly selected from a preset first codebook set C1, for example, one first matrix is selected, J first matrices are selected, or M first matrices are selected, J is the number of columns of a signal matrix sent to the signal receiver by the signal sender, where the signal sender may select the first matrix for the signal receiver in a time-sharing manner, for example, at time D0, if the number of rows of the sent signal matrix is I, then select the 1 st first matrix from the I-th first matrix subset of the first codebook set, at time D1, if the number of rows of the sent signal matrix is I, then select the 2 nd first matrix from the I-th first matrix subset of the first codebook set, and so on, at time Ds, if the number of rows of the transmitted signal matrix is I, selecting the (s-1) th first matrix from the I-th first matrix subset of the first codebook set. Similarly, when a signal sender in the 3D MIMO system needs to send a signal to a signal receiver, a number of second matrices may be directly selected from a preset second codebook set C2, for example, one second matrix is selected, or I second matrices are selected, or K second matrices are selected, I is the number of rows of a signal matrix sent to the signal receiver, where the signal sender may select the second matrix for the signal receiver in a time-sharing manner, for example, at time D0, if the number of columns of the sent signal matrix is J, then select the 1 st second matrix from the jth second matrix subset of the second codebook set, at time D1, if the number of columns of the sent signal matrix is J, then select the 2 nd second matrix from the jth second matrix subset of the second codebook set, and so on, at time, if the number of columns of the sent signal matrix is J, the (s-1) th second matrix is selected from the jth subset of second matrices of the second codebook set.

In addition, a third embodiment of the present invention further provides that the signal sending party may also receive the matrix identifiers of the plurality of first matrices and the matrix identifiers of the second matrices fed back by the signal receiving party, and then select a corresponding number of first matrices from a preset first codebook set according to the received matrix identifiers of the plurality of first matrices and select a corresponding number of second matrices from a preset second codebook set according to the received matrix identifiers of the plurality of second matrices when a signal needs to be sent to the signal receiving party. The way of feeding back the matrix identifier of the first matrix and the way of feeding back the matrix identifier of the second matrix by the signal receiving direction signal sender in the 3d mimo system are the same as the way mentioned in the first embodiment of the present invention, and are not described here again.

In the third embodiment of the present invention, the signal sender may directly select, according to the matrix identifier of the received first matrix, a first matrix corresponding to the matrix identifier of the received first matrix in the first codebook set C1, if the signal receiver feeds back a matrix identifier of a first matrix, the signal sender selects, in the first codebook set C1, the received first matrix corresponding to the matrix identifier, and if the signal receiver feeds back matrix identifiers of J or M first matrices, the signal sender selects, in the first codebook set C1, the first matrix corresponding to the matrix identifier, respectively, for each received matrix identifier; the signal transmitter may also select, directly according to the matrix identifier of the received second matrix, the second matrix corresponding to the matrix identifier of the received second matrix in the second codebook set C2, if the signal receiver feeds back a matrix identifier of a second matrix, the signal transmitter selects, in the second codebook set C2, the received second matrix corresponding to the matrix identifier, and if the signal receiver feeds back matrix identifiers of I or K second matrices, the signal transmitter selects, in the second codebook set C2, the second matrix corresponding to the matrix identifier, respectively, for each received matrix identifier. In addition, when selecting the first matrix and the second matrix, the signal transmitter may select the first matrix from the first codebook set C1 and the second matrix from the second codebook set C2 according to not only the matrix id fed back by the signal receiver, but also other factors (e.g., the current system status or the matrix id fed back by other signal receivers).

In the third embodiment of the present invention, when receiving the matrix identifier of the first matrix fed back by the signal receiver, the signal transmitter may receive the matrix identifiers of the plurality of first matrices fed back by the signal receiver for each preset subband, and at this time, for each Physical Resource Block (PRB) that needs to send a signal to the signal receiver, the signal transmitter determines the matrix identifiers of the plurality of first matrices fed back by the signal receiver for the subband to which the PRB belongs, and selects a corresponding number of first matrices from the preset first codebook set C1 according to the determined matrix identifiers of the first matrices; similarly, when the signal sender receives the matrix identifier of the second matrix fed back by the signal receiver, the matrix identifiers of a plurality of second matrices fed back by the signal receiver for preset subbands can be received, at this time, for each PRB needing to send a signal to the signal receiver, the signal sender determines the matrix identifiers of a plurality of second matrices fed back by the signal receiver for the subband to which the PRB belongs, and selects a corresponding number of second matrices from a preset second codebook set C2 according to the determined matrix identifiers of the second matrices; when the signal matrix which needs to be sent to the signal receiving side is weighted, the signal sending side carries out weighting processing on the signal matrix which needs to be sent to the signal receiving side in the PRB according to the first matrix and the second matrix which are selected for the PRB aiming at each PRB which needs to send signals to the signal receiving side.

In the third embodiment of the present invention, the signal sending party has the following seven ways to select the first matrix and the second matrix:

the first selection mode is as follows: the signal receiving party selects a first matrix from a preset first codebook set C1 and selects a second matrix from a preset second codebook set C2;

the second selection mode is as follows: the signal receiving party selects J first matrixes from a preset first codebook set C1 and selects one second matrix from a preset second codebook set C2;

the third selection mode is as follows: the signal receiving party selects a first matrix from a preset first codebook set C1, and selects K second matrices from a preset second codebook set C2;

the fourth selection mode is as follows: the signal receiving party selects J first matrixes from a preset first codebook set C1 and K second matrixes from a preset second codebook set C2;

the fifth selection mode is as follows: the signal receiving party selects M first matrixes from a preset first codebook set C1 and selects one second matrix from a preset second codebook set C2;

the sixth selection mode is as follows: the signal receiving party selects a first matrix from a preset first codebook set C1, and selects I second matrices from a preset second codebook set C2;

the seventh selection mode: the signal receiving side selects M first matrices from a preset first codebook set C1 and I second matrices from a preset second codebook set C2.

Step 52, weighting the signal matrix to be sent to the signal receiver according to the selected first matrixes and the second matrixes;

let the size of the signal matrix to be transmitted to the signal receiver be I × J, i.e. the number of rows of the signal matrix is I, the number of columns is J, the size of the first matrix in the first codebook set C1 is K × I, and the size of the second matrix in the second codebook set C2 is M × J.

In the third embodiment of the present invention, the signal sending party performs weighting processing on the signal matrix to be sent to the signal receiving party in the following eight ways:

the first processing mode is as follows: the signal transmitting side selects a first matrix W from a preset first codebook set C1, selects a second matrix V from a preset second codebook set C2, and the signal matrix to be transmitted to the signal receiving side is S, wherein:

$W=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_1\\ ...\\ W_i\\ ...\\ W_K\end{array}\right]$

$S=\left[\begin{array}{ccccc}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1& ...& S_j& ...& S_J\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

W_ifor the ith row vector of the selected first matrix W, the first matrix W has K row vectors, S_jFor the jth column vector of the signal matrix S, the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_1{S}_1& W_1{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_1{S}_J\end{array}\right]V^H\\ \left[\begin{array}{cccc}{W}_2{S}_1& W_2{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_2{S}_J\end{array}\right]V^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \begin{array}{cccc}...& ...& W_i{S}_j& ...\end{array}\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_K{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W\; K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_K{S}_{}{}_2& ...& W_K{S}_J\end{array}\right]V^H\end{array}\right]$

wherein, V^HIs the conjugate transpose of the second matrix V.

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

The second processing mode is as follows: the signal transmitting party selects J first matrixes, marked as W, from a preset first codebook set C1₁，...，W_j，...W_JJ is 1.. J, one second matrix V is selected from a preset second codebook set C2, and a signal matrix required to be sent to a signal receiver is S, where:

$W_j=\left[\begin{array}{c}{W}_{j,1}\\ ...\\ W_{j,i}\\ ...\\ W_{j,K}\end{array}\right]$

$S=\left[\begin{array}{ccccc}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1& ...& S_j& ...& S_J\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

W_j，iis the selected jth first matrix W_jThe ith row vector of (1), the first matrix W_jA total of K row vectors, S_jFor the jth column vector of the signal matrix S, the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{1,1}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,1}{S}_J\end{array}\right]{\mathrm{<figure-callout\; id="1"\; label="V\; H\; W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}^H& \\ \left[\begin{array}{c}{W}_{}\end{array}\right]\left[\begin{array}{cccc}{}_{\mathrm{1,2}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,2}{S}_J\end{array}\right]V^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \begin{array}{cccc}...& ...& W_{j,i}{S}_j& ...\end{array}\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{1,K}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{2,\mathrm{<figure-callout\; id="2"\; label="K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">K</figure-callout>}}{S}_{}{}_2& ...& W_{J,K}{S}_J\end{array}\right]V^H\end{array}\right]$

wherein, V^HIs the conjugate transpose of the second matrix V.

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

The third processing mode is as follows: the signal transmitting party selects a first matrix W from a preset first codebook set C1, and selects K second matrices V, marked as V, from a preset second codebook set C2₁，...，V_i，...V_KK, the signal matrix that needs to be sent to the signal receiver is S, where:

$W=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_1\\ ...\\ W_i\\ ...\\ W_K\end{array}\right]$

$S=\left[\begin{array}{ccccc}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1& ...& S_j& ...& S_J\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

W_ifor the ith row vector of the selected first matrix W, the first matrix W has K row vectors, S_jFor the jth column vector of the signal matrix S, the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_1{S}_1& W_1{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_1{S}_J\end{array}\right]{V_1}^H\\ \left[\begin{array}{cccc}{W}_2{S}_1& W_2{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_2{S}_J\end{array}\right]{V_2}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}...& ...& W_i{S}_j& ...\end{array}\right]{V_i}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_K{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W\; K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_K{S}_{}{}_2& ...& W_K{S}_J\end{array}\right]{V_K}^H\end{array}\right]$

wherein,V_i ^His the ith second matrix V_iThe conjugate transpose matrix of (2).

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

The fourth processing mode is as follows: the signal transmitting party selects J first matrixes W, marked as W, from a preset first codebook set C1₁，...，W_j，...W_JJ1.. J, K second matrices V, denoted V, are selected from a preset second codebook set C2₁，...，V_i，...V_KK, the signal matrix that needs to be sent to the signal receiver is S, where:

$W_j=\left[\begin{array}{c}{W}_{j,1}\\ ...\\ W_{j,i}\\ ...\\ W_{j,K}\end{array}\right]$

$S=\left[\begin{array}{ccccc}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1& ...& S_j& ...& S_J\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

W_j，iis the selected jth first matrix W_jThe ith row vector of (1), the first matrix W_jA total of K row vectors, S_jFor the jth column vector of the signal matrix S, the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{1,1}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,1}{S}_J\end{array}\right]{V_1}^{\mathrm{<figure-callout\; id="1"\; label="H\; W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \left[\begin{array}{c}{W}_{}\end{array}\right]\left[\begin{array}{cccc}{}_{\mathrm{1,2}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,2}{S}_J\end{array}\right]{V_2}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}...& ...& W_{j,i}{S}_j& ...\end{array}\right]{V_i}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{1,K}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{2,\mathrm{<figure-callout\; id="2"\; label="K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">K</figure-callout>}}{S}_{}{}_2& ...& W_{J,K}{S}_J\end{array}\right]{V_K}^H\end{array}\right]$

wherein, V_i ^HIs the ith second matrix V_iThe conjugate transpose matrix of (2).

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

The fifth processing mode: the signal transmitting side selects a first matrix W from a preset first codebook set C1, selects a second matrix V from a preset second codebook set C2, and the signal matrix to be transmitted to the signal receiving side is S, wherein:

$V=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_1\\ ...\\ V_j\\ ...\\ V_M\end{array}\right]$

$S=\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}\\ ...\\ \stackrel{\&OverBar;}{S_i}\\ ...\\ \stackrel{\&OverBar;}{S_J}\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

V_jfor the j-th row vector of the selected second matrix V, the second matrix V has a total of M row vectors,

to be a transpose of the i-th column vector of the signal matrix S that needs to be sent to the signal receiver,the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{cccc}\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_1^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_1^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_1^{\mathrm{<figure-callout\; id="1"\; label="H\; W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \end{array},\right]& W\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_2^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_2^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_2^H\end{array}\right]& ...W\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_j^H\\ ...\end{array}\right]& ...\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_{\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_M^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_M^H\end{array}\right]\end{array}\right]$

wherein, V_j ^HIs the conjugate transpose of the jth row vector of the second matrix V.

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

The sixth processing mode: the signal transmitting party selects M first matrixes W, noted as W, from a preset first codebook set C1₁，...，W_j，...W_MJ ═ 1.. times, M, one second matrix V is selected from a preset second codebook set C2, and the signal matrix required to be sent to the signal receiver is S, where:

$V=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_1\\ ...\\ V_j\\ ...\\ V_M\end{array}\right]$

$S=\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}\\ ...\\ \stackrel{\&OverBar;}{S_i}\\ ...\\ \stackrel{\&OverBar;}{S_J}\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

V_jfor the j-th row vector of the selected second matrix V, the second matrix V has a total of M row vectors,in order to transpose the ith column vector of the signal matrix S that needs to be sent to the signal receiver, the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{cccc}{W}_1\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{V}_1^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_1^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_1^H\end{array}\right]& W_2\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{V}_2^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_2^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_2^H\end{array}\right]& ...W_j\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_j^H\\ ...\end{array}\right]& ...{\mathrm{<figure-callout\; id="1"\; label="W\; M\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_M\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_{\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_M^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_M^H\end{array}\right]\end{array}\right]$

wherein, V_j ^HIs the conjugate transpose of the jth row vector of the second matrix V.

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

The seventh processing mode: the signal transmitting party selects a first matrix W from a preset first codebook set C1, and selects I second matrices V, marked as V, from a preset second codebook set C2₁，...，V_i，...V _I1.. I, the signal matrix that needs to be sent to the signal receiver is S, where:

$V_i=\left[\begin{array}{c}{V}_{i,1}\\ ...\\ V_{i,j}\\ ...\\ V_{i,M}\end{array}\right]$

$S=\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}\\ ...\\ \stackrel{\&OverBar;}{S_i}\\ ...\\ \stackrel{\&OverBar;}{S_J}\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

V_i，jfor the selected ith second matrix V_iThe jth row vector of (2), the second matrix V_iThere are a total of M row vectors,

in order to transpose the ith column vector of the signal matrix S that needs to be sent to the signal receiver, the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{cccc}\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,1}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,1}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,1}^{\mathrm{<figure-callout\; id="1"\; label="H\; W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \end{array},\right]& W\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,2}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,2}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,2}^H\end{array}\right]& ...W\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_{i,j}^H\\ ...\end{array}\right]& ...\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{1,\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{2,M}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,M}^H\end{array}\right]\end{array}\right]$

wherein, V_i，j ^HIs the ith second matrix V_iThe conjugate transpose of the jth row vector of (1).

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

The eighth processing mode: the signal transmitting party selects M first matrixes, denoted as W, from a preset first codebook set C1₁，...，W_j，...W_MJ 1.. M, I second matrices, denoted V, are selected from a preset second codebook set C2₁，...，V_i，...V _I1.. I, the signal matrix that needs to be sent to the signal receiver is S, where:

$V_i=\left[\begin{array}{c}{V}_{i,1}\\ ...\\ V_{i,j}\\ ...\\ V_{i,M}\end{array}\right]$

$S=\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}\\ ...\\ \stackrel{\&OverBar;}{S_i}\\ ...\\ \stackrel{\&OverBar;}{S_J}\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}& ...& {\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{1,J}\\ ...& ...& ...\\ Z_{I,1}& ...& Z_{I,J}\end{array}\right]$

V_i，jfor the selected ith second matrix V_iThe jth row vector of (2), the second matrix V_iThere are a total of M row vectors,

in order to transpose the ith column vector of the signal matrix S that needs to be sent to the signal receiver, the signal matrix S has J column vectors in total.

At this time, the signal transmitting party performs weighting processing on the signal matrix S which needs to be transmitted to the signal receiving party by the following method:

$\left[\begin{array}{cccc}{W}_1\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,1}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,1}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,1}^H\end{array}\right]& W_2\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,2}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,2}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,2}^H\end{array}\right]& ...W_j\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_{i,j}^H\\ ...\end{array}\right]& ...{\mathrm{<figure-callout\; id="1"\; label="W\; M\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_M\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{1,\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{2,M}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,M}^H\end{array}\right]\end{array}\right]$

wherein, V_i，j ^HIs the ith second matrix V_iThe conjugate transpose of the jth row vector of (1).

The K × M signals can be obtained by weighting the signal matrix S to be transmitted to the signal receiver in the above processing manner.

And step 53, transmitting each signal obtained after weighting processing to the signal receiving side.

And the signal sender respectively determines a transmitting antenna corresponding to each signal in the KxM signals obtained after weighting, determines an antenna array corresponding to the signal from the antenna arrays contained in the determined transmitting antennas, and sends the signal to the signal receiver through the determined antenna array.

In addition, the third embodiment of the present invention provides that, if signals transmitted by multiple antenna elements on the same transmitting antenna are always in a fixed relationship, these antenna elements can be equivalently regarded as a virtual/logical antenna element, and therefore the number K of the antenna elements in the third embodiment of the present invention may be the number of physical antenna elements, or the number of virtual/logical antenna elements

The scheme can still be adopted at the moment, but only the scheme is used

Instead of K.

As can be seen from the above processing procedure, in the technical solution of the embodiment of the present invention, a first codebook set and a second codebook set are set in advance for a 3D MIMO system, where the first codebook set includes a plurality of preset first matrices, the second codebook set includes a plurality of preset second matrices, and when a signal sender in the 3D MIMO system needs to send a signal to a signal receiver, the first codebooks are selected from the first codebook set, the second codebooks are selected from the second codebook set, and a signal matrix to be sent to the signal receiver is weighted according to the selected first matrices and the second matrices, and then each signal obtained after weighting is sent to the signal receiver. Therefore, the embodiment of the invention provides a specific implementation scheme for transmitting signals between a signal transmitting party and a signal receiving party in a 3D MIMO system, which can effectively reduce the overhead of codebook feedback, improve the system performance and reduce the overall complexity of system implementation.

Example four

Corresponding to the signal transmission method in the 3D MIMO system according to the third embodiment of the present invention, a fourth embodiment of the present invention provides a signal transmission apparatus in the 3D MIMO system, which has a structure shown in fig. 6 and includes:

a first matrix selecting unit 61, configured to select a plurality of first matrices from a preset first codebook set when the signal transmitting apparatus needs to transmit a signal to the signal receiving apparatus;

a second matrix selecting unit 62, configured to select a plurality of second matrices from a preset second codebook set when the signal transmitting apparatus needs to transmit a signal to the signal receiving apparatus;

a weighting processing unit 63, configured to perform weighting processing on a signal stream that needs to be sent to the signal receiving apparatus according to the first matrix selected by the first matrix selecting unit 61 and the second matrix selected by the second matrix selecting unit 62;

a signal transmitting unit 64, configured to transmit each signal obtained by performing weighting processing by the weighting processing unit 63 to the signal receiving apparatus.

Preferably, the signal transmission device further includes:

a first matrix identifier receiving unit, configured to receive matrix identifiers of a plurality of first matrices fed back by a signal receiving side before the first matrix selecting unit 61 selects the plurality of first matrices from a preset first codebook set;

a first matrix selecting unit 61, configured to specifically select, according to the matrix identifiers of the plurality of first matrices received by the first matrix identifier receiving unit, a corresponding number of first matrices from a preset first codebook set;

a second matrix identifier receiving unit, configured to receive the matrix identifiers of the plurality of second matrices fed back by the signal receiving side before the second matrix selecting unit 62 selects the plurality of second matrices from the preset second codebook set;

the second matrix selecting unit 62 is specifically configured to select a corresponding number of second matrices from a preset second codebook set according to the matrix identifiers of the plurality of second matrices received by the second matrix identifier receiving unit.

Preferably, the first matrix identifier receiving unit is specifically configured to receive matrix identifiers of a plurality of first matrices respectively fed back by the signal receiver for preset subbands;

the first matrix selecting unit 61 is specifically configured to determine, for each PRB needing to send a signal to a signal receiver, matrix identifiers of a plurality of first matrices fed back by the signal receiver for subbands to which the PRB belongs, and select, according to the determined matrix identifiers of the first matrices, a corresponding number of first matrices from a preset first codebook set;

the second matrix identification receiving unit is specifically used for receiving the matrix identifications of a plurality of second matrices respectively fed back by the signal receiver aiming at preset sub-bands;

a second matrix selecting unit 62, configured to specifically determine, for each PRB needing to send a signal to a signal receiver, matrix identifiers of a plurality of second matrices fed back by the signal receiver for subbands to which the PRB belongs, and select, according to the determined matrix identifiers of the second matrices, a corresponding number of second matrices from a preset second codebook set;

the weighting processing unit 63 is specifically configured to, for each PRB that needs to transmit a signal to a signal receiving side, perform weighting processing on a signal matrix that needs to be transmitted to the signal receiving side in the PRB according to a first matrix selected by the first matrix selecting unit for the PRB and a second matrix selected by the second matrix selecting unit for the PRB, respectively.

Preferably, the signal sending unit is specifically configured to determine, for each signal of the K × M signals obtained after the weighting processing unit performs weighting processing, a transmitting antenna corresponding to the signal, determine an antenna array corresponding to the signal from antenna arrays included in the determined transmitting antenna, and send the signal to the signal receiving side through the determined antenna array, where K is the number of antenna arrays included in each transmitting antenna of the signal sending side, and M is the number of transmitting antennas of the signal sending side.

Preferably, the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is the number K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is the number I of rows of a signal matrix received by the signal receiving party;

a second matrix selecting unit 62, configured to specifically select a second matrix from a preset second codebook set, where a row number of the second matrix is the number M of transmitting antennas of the signal sending party, and a column number is the number J of signal matrices received by the signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_1{S}_1& W_1{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_1{S}_J\end{array}\right]V^H\\ \left[\begin{array}{cccc}{W}_2{S}_1& W_2{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_2{S}_J\end{array}\right]V^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \begin{array}{cccc}...& ...& W_i{S}_j& ...\end{array}\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_K{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W\; K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_K{S}_{}{}_2& ...& W_K{S}_J\end{array}\right]V^H\end{array}\right]$

wherein, W_iThe ith row vector of the selected first matrix;

v is a selected second matrix, V^HA conjugate transpose matrix of the second matrix V;

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

Preferably, the first matrix selecting unit 61 is specifically configured to select J first matrices from a preset first codebook set, where the number of rows of the first matrices is K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is I of rows of a signal matrix received by the signal receiving party;

a second matrix selecting unit 62, configured to specifically select a second matrix from a preset second codebook set, where a row number of the second matrix is the number M of transmitting antennas of the signal sending party, and a column number is the number J of signal matrices received by the signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{1,1}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,1}{S}_J\end{array}\right]{\mathrm{<figure-callout\; id="1"\; label="V\; H\; W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}^H& \\ \left[\begin{array}{c}{W}_{}\end{array}\right]\left[\begin{array}{cccc}{}_{\mathrm{1,2}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,2}{S}_J\end{array}\right]V^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \begin{array}{cccc}...& ...& W_{j,i}{S}_j& ...\end{array}\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{1,K}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{2,\mathrm{<figure-callout\; id="2"\; label="K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">K</figure-callout>}}{S}_{}{}_2& ...& W_{J,K}{S}_J\end{array}\right]V^H\end{array}\right]$

wherein, W_j，iThe ith row vector of the selected jth first matrix is selected;

v is a selected second matrix, V^HA conjugate transpose matrix of the second matrix V;

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

Preferably, the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is the number K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is the number I of rows of a signal matrix received by the signal receiving party;

a second matrix selecting unit 62, configured to specifically select K second matrices from a preset second codebook set, where a row number of the second matrices is the number M of transmitting antennas of the signal sending party, and a column number is the number J of signal matrices received by the signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_1{S}_1& W_1{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_1{S}_J\end{array}\right]{V_1}^H\\ \left[\begin{array}{cccc}{W}_2{S}_1& W_2{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_2{S}_J\end{array}\right]{V_2}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}...& ...& W_i{S}_j& ...\end{array}\right]{V_i}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_K{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W\; K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_K{S}_{}{}_2& ...& W_K{S}_J\end{array}\right]{V_K}^H\end{array}\right]$

wherein, W_iThe ith row vector of the selected first matrix;

V_ifor the selected i-th second matrix, V_i ^HIs the ith second matrix V_iThe conjugate transpose matrix of (a);

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

Preferably, the first matrix selecting unit 61 is specifically configured to select J first matrices from a preset first codebook set, where the number of rows of the first matrices is K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is I of rows of a signal matrix received by the signal receiving party;

a second matrix selecting unit 62, configured to specifically select K second matrices from a preset second codebook set, where a row number of the second matrices is the number M of transmitting antennas of the signal sending party, and a column number is the number J of signal matrices received by the signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{1,1}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,1}{S}_J\end{array}\right]{V_1}^{\mathrm{<figure-callout\; id="1"\; label="H\; W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \left[\begin{array}{c}{W}_{}\end{array}\right]\left[\begin{array}{cccc}{}_{\mathrm{1,2}}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_2& ...& W_{J,2}{S}_J\end{array}\right]{V_2}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}...& ...& W_{j,i}{S}_j& ...\end{array}\right]{V_i}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{1,K}{S}_1& {\mathrm{<figure-callout\; id="2"\; label="W"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_{2,\mathrm{<figure-callout\; id="2"\; label="K\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">K</figure-callout>}}{S}_{}{}_2& ...& W_{J,K}{S}_J\end{array}\right]{V_K}^H\end{array}\right]$

wherein, W_j，iThe ith row vector of the selected jth first matrix is selected;

V_ifor the selected i-th second matrix, V_i ^HIs the ith second matrix V_iThe conjugate transpose matrix of (a);

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

Preferably, the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is the number K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is the number I of rows of a signal matrix received by the signal receiving party;

a second matrix selecting unit 62, configured to specifically select a second matrix from a preset second codebook set, where a row number of the second matrix is the number M of transmitting antennas of the signal sending party, and a column number is the number J of signal matrices received by the signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{cccc}\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_1^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_1^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_1^{\mathrm{<figure-callout\; id="1"\; label="H\; W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \end{array},\right]& W\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_2^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_2^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_2^H\end{array}\right]& ...W\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_j^H\\ ...\end{array}\right]& ...\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_{\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_M^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_M^H\end{array}\right]\end{array}\right]$

wherein, W is the selected first matrix;

v is a selected second matrix, V_j ^HIs the conjugate transpose of the jth row vector of the second matrix V;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

Preferably, the first matrix selecting unit 61 is specifically configured to select M first matrices from a preset first codebook set, where the number of rows of the first matrices is K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is I of rows of a signal matrix received by the signal receiving party;

a second matrix selecting unit 62, configured to specifically select a second matrix from a preset second codebook set, where a row number of the second matrix is the number M of transmitting antennas of the signal sending party, and a column number is the number J of signal matrices received by the signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{cccc}{W}_1\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{V}_1^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_1^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_1^H\end{array}\right]& W_2\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{V}_2^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_2^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_2^H\end{array}\right]& ...W_j\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_j^H\\ ...\end{array}\right]& ...{\mathrm{<figure-callout\; id="1"\; label="W\; M\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_M\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{V}_{\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{V}_M^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_M^H\end{array}\right]\end{array}\right]$

wherein, W_jIs the j-th first matrix selected;

v is a selected second matrix, V_j ^HIs the conjugate transpose of the jth row vector of the second matrix V;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

Preferably, the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is the number K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is the number I of rows of a signal matrix received by the signal receiving party;

a second matrix selecting unit 62, configured to specifically select I second matrices from a preset second codebook set, where a row number of the second matrices is the number M of transmitting antennas of the signal sending party, and a column number is the number J of signal matrices received by the signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{cccc}\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,1}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,1}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,1}^{\mathrm{<figure-callout\; id="1"\; label="H\; W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \end{array},\right]& W\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,2}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,2}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,2}^H\end{array}\right]& ...W\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_{i,j}^H\\ ...\end{array}\right]& ...\mathrm{<figure-callout\; id="1"\; label="W\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{1,\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{2,M}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,M}^H\end{array}\right]\end{array}\right]$

wherein, W is the selected first matrix;

V_i，jfor the j-th row vector, V, of the selected i-th secondary matrix_i，j ^HA conjugate transpose of a jth row vector of the ith second matrix;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

Preferably, the first matrix selecting unit 61 is specifically configured to select M first matrices from a preset first codebook set, where the number of rows of the first matrices is K of antenna elements included in each transmit antenna of the signal sending party, and the number of columns is I of rows of a signal matrix received by the signal receiving party;

a first matrix selecting unit 62, configured to specifically select I second matrices from a preset second codebook set, where a row number of the second matrices is the number M of transmitting antennas of a signal sending party, and a column number is the number J of signal matrices received by a signal receiving party;

the weighting processing unit 63 performs weighting processing on the signal matrix to be transmitted to the signal receiving side by:

$\left[\begin{array}{cccc}{W}_1\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,1}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,1}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,1}^H\end{array}\right]& W_2\left[\begin{array}{c}\stackrel{\&OverBar;}{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{1,2}}^{\mathrm{<figure-callout\; id="2"\; label="H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">H</figure-callout>}}& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{2,2}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,2}^H\end{array}\right]& ...W_j\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_{i,j}^H\\ ...\end{array}\right]& ...{\mathrm{<figure-callout\; id="1"\; label="W\; M\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">W</figure-callout>}}_M\left[\begin{array}{c}\stackrel{}{S_{}}\end{array}\right]\left[\begin{array}{c}\stackrel{\&OverBar;}{{}_1}{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{1,\mathrm{<figure-callout\; id="2"\; label="M\; H\; S"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">M</figure-callout>}}^H& \\ \stackrel{}{S_{}}\stackrel{\&OverBar;}{{}_2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000132494880000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_{2,M}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,M}^H\end{array}\right]\end{array}\right]$

wherein, W_jIs the j-th first matrix selected;

V_i，jfor the j-th row vector, V, of the selected i-th secondary matrix_i，j ^HA conjugate transpose of a jth row vector of the ith second matrix;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (31)

1. A codebook feedback method in a three-dimensional multiple-input multiple-output (3D MIMO) system is characterized by comprising the following steps:

a signal receiving party in the 3D MIMO system selects a plurality of first matrixes from a preset first codebook set and selects a plurality of second matrixes from a preset second codebook set;

and sending the selected matrix identifier of the first matrix and the selected matrix identifier of the second matrix to a signal sending party.

2. The method of claim 1, wherein the first codebook set comprises a plurality of first matrix subsets, each of the first matrix subsets comprises a plurality of first matrices, each of the first matrix subsets corresponds to a number of rows of a signal matrix received by the signal receiving side, the number of rows of each first matrix in the first matrix subsets is the number of antenna elements included in each transmitting antenna of the signal transmitting side, and the number of columns is the number of rows of the signal matrix received by the signal receiving side;

the method for selecting a plurality of first matrices from a preset first codebook set by a signal receiving party specifically comprises the following steps:

the signal receiving party selects a first matrix subset corresponding to the row number of the signal matrix to be received from a plurality of first matrix subsets contained in a first codebook set according to the row number of the signal matrix to be received; and are

A number of first matrices are selected from the selected subset of first matrices.

3. The method of claim 1, wherein the second codebook set comprises a plurality of second matrix subsets, each of the second matrix subsets comprises a plurality of second matrices, each of the second matrix subsets corresponds to the number of columns of the signal matrix received by the signal receiver, the number of rows of each of the second matrices in the second matrix subsets is the number of transmitting antennas of the signal transmitter, and the number of columns is the number of columns of the signal matrix received by the signal receiver;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

the signal receiving party selects a second matrix subset corresponding to the column number of the signal matrix to be received from a plurality of second matrix subsets contained in the second codebook set according to the column number of the signal matrix to be received; and are

And selecting a plurality of second matrixes from the selected second matrix subset.

4. The method as claimed in claim 1, wherein the signal receiving side selects a number of first matrices from a preset first codebook set and a number of second matrices from a preset second codebook set, specifically comprising:

the signal receiving party selects a plurality of first matrixes from a preset first codebook set and a plurality of second matrixes from a preset second codebook set respectively aiming at each preset subband;

sending the matrix identifier of the selected first matrix and the matrix identifier of the selected second matrix to a signal sending party, specifically comprising:

and the signal receiving party respectively sends the matrix identifier of the first matrix selected by the sub-band and the matrix identifier of the second matrix selected by the signal receiving party to the signal sending party aiming at each preset sub-band.

5. The method of claim 1, wherein the signal receiving side selects a plurality of first matrices from a preset first codebook set, including;

the signal receiving party selects a first matrix from a preset first codebook set;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

the signal receiving party selects a second matrix from a preset second codebook set.

6. The method of claim 1, wherein the signal receiving side selects a plurality of first matrices from a preset first codebook set, including;

the signal receiving side selects J first matrixes from a preset first codebook set, wherein J is the column number of the signal matrixes received by the signal receiving side;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

the signal receiving party selects a second matrix from a preset second codebook set.

7. The method of claim 1, wherein the signal receiving side selects a plurality of first matrices from a preset first codebook set, including;

the signal receiving party selects a first matrix from a preset first codebook set;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

and the signal receiving party selects K second matrixes from a preset second codebook set, wherein K is the number of antenna elements contained in each antenna of the signal sending party.

8. The method of claim 1, wherein the signal receiving side selects a plurality of first matrices from a preset first codebook set, including;

the signal receiving side selects J first matrixes from a preset first codebook set, wherein J is the column number of the signal matrixes received by the signal receiving side;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

and the signal receiving party selects K second matrixes from a preset second codebook set, wherein K is the number of antenna elements contained in each antenna of the signal sending party.

9. The method of claim 1, wherein the signal receiving side selects a plurality of first matrices from a preset first codebook set, including;

the signal receiving party selects M first matrixes from a preset first codebook set, wherein M is the number of transmitting antennas of the signal transmitting party;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

the signal receiving party selects a second matrix from a preset second codebook set.

10. The method of claim 1, wherein the signal receiving side selects a plurality of first matrices from a preset first codebook set, including;

the signal receiving party selects a first matrix from a preset first codebook set;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

and the signal receiving party selects I second matrixes from a preset second codebook set, wherein I is the row number of the signal matrixes received by the signal receiving party.

11. The method of claim 1, wherein the signal receiving side selects a plurality of first matrices from a preset first codebook set, including;

the signal receiving party selects M first matrixes from a preset first codebook set, wherein M is the number of transmitting antennas of the signal transmitting party;

the signal receiving side selects a plurality of second matrices from a preset second codebook set, and specifically includes:

and the signal receiving party selects I second matrixes from a preset second codebook set, wherein I is the row number of the signal matrixes received by the signal receiving party.

12. A signal receiving apparatus in a three-dimensional multiple-input multiple-output (3D MIMO) system, comprising:

the device comprises a first matrix selection unit, a second matrix selection unit and a control unit, wherein the first matrix selection unit is used for selecting a plurality of first matrixes from a preset first codebook set;

the second matrix selection unit is used for selecting a plurality of second matrixes from a preset second codebook set;

and the sending unit is used for sending the matrix identifier of the first matrix selected by the first matrix selecting unit and the matrix identifier of the second matrix selected by the second matrix selecting unit to the signal sending device.

13. The signal receiving apparatus of claim 12, wherein the first codebook set comprises a plurality of first matrix subsets, each of the first matrix subsets comprises a plurality of first matrices, each of the first matrix subsets corresponds to a number of rows of a signal matrix received by the signal receiving side, the number of rows of each first matrix in the first matrix subsets is the number of antenna elements included in each transmitting antenna of the signal transmitting side, and the number of columns is the number of rows of the signal matrix received by the signal receiving side;

the first matrix selection unit specifically includes:

the first matrix subset selecting subunit is configured to select, according to the number of rows of a signal matrix that needs to be received by the signal receiving apparatus, a first matrix subset corresponding to the number of rows of the signal matrix that needs to be received from among a plurality of first matrix subsets included in a first codebook set;

and the first matrix selection subunit is used for selecting a plurality of first matrixes from the first matrix subset selected by the first matrix subset selection subunit.

14. The signal receiving apparatus of claim 12, wherein the second codebook set comprises a plurality of second matrix subsets, each of the second matrix subsets comprises a plurality of second matrices, each of the second matrix subsets corresponds to a number of columns of a signal matrix received by the signal receiving side, the number of rows of each second matrix in the second matrix subsets is the number of transmitting antennas of the signal transmitting side, and the number of columns is the number of columns of the signal matrix received by the signal receiving side;

the second matrix selection unit specifically includes:

a second matrix subset selecting subunit, configured to select, according to the number of columns of the signal matrix that needs to be received by the signal receiving apparatus, a second matrix subset corresponding to the number of columns of the signal matrix that needs to be received, from among a plurality of second matrix subsets included in a second codebook set;

and the second matrix selection subunit is used for selecting a plurality of second matrixes from the second matrix subset selected by the second matrix subset selection subunit.

15. The signal receiving apparatus according to claim 12, wherein the first matrix selecting unit is specifically configured to select, for each preset subband, a plurality of first matrices from a preset first codebook set;

the second matrix selection unit is specifically configured to select, for each preset subband, a plurality of second matrices from a preset second codebook set respectively;

and a sending unit, configured to send, to a signal sender, a matrix identifier of a first matrix selected by the first matrix selecting unit for the subband and a matrix identifier of a second matrix selected by the second matrix selecting unit for the subband, respectively for each preset subband.

16. A signal transmission method in a three-dimensional multiple-input multiple-output (3D MIMO) system, comprising:

when a signal sending party in a 3D MIMO system needs to send signals to a signal receiving party, selecting a plurality of first matrixes from a preset first codebook set, and selecting a plurality of second matrixes from a preset second codebook set;

according to the selected first matrixes and the second matrixes, carrying out weighting processing on the signal matrixes to be sent to the signal receiving party; and are

And sending each signal obtained after weighting processing to the signal receiving party.

17. The method of claim 16, wherein before the signal transmitting side selects a plurality of first matrices from a preset first codebook set, further comprising:

a signal sending party receives matrix identifications of a plurality of first matrixes fed back by a signal receiving party;

the method for selecting a plurality of first matrixes from a preset first codebook set by a signal sender specifically comprises the following steps:

selecting a corresponding number of first matrixes from a preset first codebook set according to the received matrix identifications of the first matrixes;

before the signal transmitter selects a plurality of second matrixes from a preset second codebook set, the method further comprises the following steps:

a signal sending party receives matrix identifications of a plurality of second matrixes fed back by a signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

and selecting a corresponding number of second matrixes from a preset second codebook set according to the received matrix identifications of the second matrixes.

18. The method as claimed in claim 17, wherein the matrix identification of the first matrices fed back by the signal transmitter and the signal receiver specifically includes:

a signal sending party receives matrix identifications of a plurality of first matrixes respectively fed back by a signal receiving party aiming at preset sub-bands;

according to the received matrix identifications of the first matrixes, selecting a corresponding number of first matrixes from a preset first codebook set, and specifically comprising the following steps:

the method comprises the steps that a signal sender respectively determines matrix identifications of a plurality of first matrixes fed back by the signal receiver aiming at a sub-band to which a PRB belongs aiming at each physical resource block PRB needing to send signals to the signal receiver, and selects a corresponding number of first matrixes from a preset first codebook set according to the determined matrix identifications of the first matrixes;

the matrix identification of a plurality of second matrixes fed back by the signal receiver is received by the signal transmitter, and the method specifically comprises the following steps:

a signal sending party receives matrix identifications of a plurality of second matrixes respectively fed back by a signal receiving party aiming at preset sub-bands;

according to the received matrix identifications of the plurality of second matrices, selecting a corresponding number of second matrices from a preset second codebook set, and specifically comprising:

the signal transmitting party respectively determines matrix identifications of a plurality of second matrixes fed back by the signal receiving party for the sub-bands to which the PRBs belong aiming at each PRB needing to transmit signals to the signal receiving party, and selects a corresponding number of second matrixes from a preset second code book set according to the determined matrix identifications of the second matrixes;

according to the selected plurality of first matrixes and the selected plurality of second matrixes, weighting processing is carried out on the signal matrixes to be sent to the signal receiving party, and the method specifically comprises the following steps:

and the signal transmitting side carries out weighting processing on the signal matrix which needs to be transmitted to the signal receiving side in the PRB according to the first matrix and the second matrix which are selected aiming at the PRB aiming at each PRB which needs to transmit signals to the signal receiving side.

19. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects a first matrix from a preset first codebook set, the number of rows of the first matrix is the number K of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is the number I of rows of the signal matrix received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects a second matrix from a preset second codebook set, the row number of the second matrix is the number M of the transmitting antennas of the signal sender, and the column number is the column number J of the signal matrix received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_1{S}_1& W_1{S}_2& ...& W_1{S}_J\end{array}\right]V^H\\ \left[\begin{array}{cccc}{W}_2{S}_1& W_2{S}_2& ...& W_2{S}_J\end{array}\right]V^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \begin{array}{cccc}...& ...& W_i{S}_j& ...\end{array}\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_K{S}_1& W_K{S}_2& ...& W_K{S}_J\end{array}\right]V^H\end{array}\right]$

wherein, W_iThe ith row vector of the selected first matrix;

v is a selected second matrix, V^HA conjugate transpose matrix of the second matrix V;

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

20. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects J first matrixes from a preset first codebook set, the number of rows of the first matrixes is K of the number of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is I of the number of rows of the signal matrixes received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects a second matrix from a preset second codebook set, the row number of the second matrix is the number M of the transmitting antennas of the signal sender, and the column number is the column number J of the signal matrix received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_{\mathrm{1,1}}{S}_1& W_{\mathrm{2,1}}{S}_2& ...& W_{J,1}{S}_J\end{array}\right]V^H\\ \left[\begin{array}{cccc}{W}_{\mathrm{1,2}}{S}_1& W_{\mathrm{2,2}}{S}_2& ...& W_{J,2}{S}_J\end{array}\right]V^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \begin{array}{cccc}...& ...& W_{j,i}{S}_j& ...\end{array}\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_{1,K}{S}_1& W_{2,K}{S}_2& ...& W_{J,K}{S}_J\end{array}\right]V^H\end{array}\right]$

wherein, W_j，iThe ith row vector of the selected jth first matrix is selected;

v is a selected second matrix, V^HA conjugate transpose matrix of the second matrix V;

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

21. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects a first matrix from a preset first codebook set, the number of rows of the first matrix is the number K of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is the number I of rows of the signal matrix received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects K second matrixes from a preset second codebook set, the row number of the second matrixes is the number M of transmitting antennas of the signal sender, and the column number of the second matrixes is the number J of columns of the signal matrixes received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_1{S}_1& W_1{S}_2& ...& W_1{S}_J\end{array}\right]{V_1}^H\\ \left[\begin{array}{cccc}{W}_2{S}_1& W_2{S}_2& ...& W_2{S}_J\end{array}\right]{V_2}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}...& ...& W_i{S}_j& ...\end{array}\right]{V_i}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_K{S}_1& W_K{S}_2& ...& W_K{S}_J\end{array}\right]{V_K}^H\end{array}\right]$

wherein, W_iThe ith row vector of the selected first matrix;

V_ifor the selected i-th second matrix, V_i ^HIs the ith second matrix V_iThe conjugate transpose matrix of (a);

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

22. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects J first matrixes from a preset first codebook set, the number of rows of the first matrixes is K of the number of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is I of the number of rows of the signal matrixes received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects K second matrixes from a preset second codebook set, the row number of the second matrixes is the number M of transmitting antennas of the signal sender, and the column number of the second matrixes is the number J of columns of the signal matrixes received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{c}\left[\begin{array}{cccc}{W}_{\mathrm{1,1}}{S}_1& W_{\mathrm{2,1}}{S}_2& ...& W_{J,1}{S}_J\end{array}\right]{V_1}^H\\ \left[\begin{array}{cccc}{W}_{\mathrm{1,2}}{S}_1& W_{\mathrm{2,2}}{S}_2& ...& W_{J,2}{S}_J\end{array}\right]{V_2}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}...& ...& W_{j,i}{S}_j& ...\end{array}\right]{V_i}^H\\ \begin{array}{cccc}& & ...& \end{array}\\ \left[\begin{array}{cccc}{W}_{1,K}{S}_1& W_{2,K}{S}_2& ...& W_{J,K}{S}_J\end{array}\right]{V_K}^H\end{array}\right]$

wherein, W_j，iThe ith row vector of the selected jth first matrix is selected;

V_ifor the selected i-th second matrix, V_i ^HIs the ith second matrix V_iThe conjugate transpose matrix of (a);

S_jis the jth column vector of the signal matrix that needs to be transmitted to the signal receiver.

23. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects a first matrix from a preset first codebook set, the number of rows of the first matrix is the number K of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is the number I of rows of the signal matrix received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects a second matrix from a preset second codebook set, the row number of the second matrix is the number M of the transmitting antennas of the signal sender, and the column number is the column number J of the signal matrix received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{cccc}W\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_1^H\\ \stackrel{\&OverBar;}{S_2}{V}_1^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_1^H\end{array}\right]& W\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_2^H\\ \stackrel{\&OverBar;}{S_2}{V}_2^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_2^H\end{array}\right]& ...W\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_j^H\\ ...\end{array}\right]& ...W\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_M^H\\ \stackrel{\&OverBar;}{S_2}{V}_M^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_M^H\end{array}\right]\end{array}\right]$

wherein, W is the selected first matrix;

v is a selected second matrix, V_j ^HIs the conjugate transpose of the jth row vector of the second matrix V;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

24. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects M first matrixes from a preset first codebook set, the number of rows of the first matrixes is K of the number of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is I of the number of rows of the signal matrix received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects a second matrix from a preset second codebook set, the row number of the second matrix is the number M of the transmitting antennas of the signal sender, and the column number is the column number J of the signal matrix received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{cccc}{W}_1\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_1^H\\ \stackrel{\&OverBar;}{S_2}{V}_1^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_1^H\end{array}\right]& W_2\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_2^H\\ \stackrel{\&OverBar;}{S_2}{V}_2^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_2^H\end{array}\right]& ...W_j\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_j^H\\ ...\end{array}\right]& ...W_M\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_M^H\\ \stackrel{\&OverBar;}{S_2}{V}_M^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_M^H\end{array}\right]\end{array}\right]$

wherein, W_jIs the j-th first matrix selected;

v is a selected second matrix, V_j ^HIs the conjugate transpose of the jth row vector of the second matrix V;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

25. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects a first matrix from a preset first codebook set, the number of rows of the first matrix is the number K of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is the number I of rows of the signal matrix received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects I second matrixes from a preset second codebook set, the row number of the second matrixes is the number M of transmitting antennas of the signal sender, and the column number of the second matrixes is the number J of columns of the signal matrixes received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{cccc}W\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_{\mathrm{1,1}}^H\\ \stackrel{\&OverBar;}{S_2}{V}_{\mathrm{2,1}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,1}^H\end{array}\right]& W\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_{\mathrm{1,2}}^H\\ \stackrel{\&OverBar;}{S_2}{V}_{\mathrm{2,2}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,2}^H\end{array}\right]& ...W\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_{i,j}^H\\ ...\end{array}\right]& ...W\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_{1,M}^H\\ \stackrel{\&OverBar;}{S_2}{V}_{2,M}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,M}^H\end{array}\right]\end{array}\right]$

wherein, W is the selected first matrix;

V_i，jfor the j-th row vector, V, of the selected i-th secondary matrix_i，j ^HA conjugate transpose of a jth row vector of the ith second matrix;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

26. The method of claim 16, wherein the signal transmitting side selects a plurality of first matrices from a preset first codebook set, and specifically comprises:

the signal sending party selects M first matrixes from a preset first codebook set, the number of rows of the first matrixes is K of the number of antenna elements contained in each transmitting antenna of the signal sending party, and the number of columns is I of the number of rows of the signal matrix received by the signal receiving party;

the signal transmitting party selects a plurality of second matrixes from a preset second codebook set, and the method specifically comprises the following steps:

the signal sender selects I second matrixes from a preset second codebook set, the row number of the second matrixes is the number M of transmitting antennas of the signal sender, and the column number of the second matrixes is the number J of columns of the signal matrixes received by the signal receiver;

weighting the signal matrix to be transmitted to the signal receiving side by the following method:

$\left[\begin{array}{cccc}{W}_1\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_{\mathrm{1,1}}^H\\ \stackrel{\&OverBar;}{S_2}{V}_{\mathrm{2,1}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,1}^H\end{array}\right]& W_2\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_{\mathrm{1,2}}^H\\ \stackrel{\&OverBar;}{S_2}{V}_{\mathrm{2,2}}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,2}^H\end{array}\right]& ...W_j\left[\begin{array}{c}...\\ ...\\ \stackrel{\&OverBar;}{S_i}{V}_{i,j}^H\\ ...\end{array}\right]& ...W_M\left[\begin{array}{c}\stackrel{\&OverBar;}{S_1}{V}_{1,M}^H\\ \stackrel{\&OverBar;}{S_2}{V}_{2,M}^H\\ ...\\ \stackrel{\&OverBar;}{S_J}{V}_{J,M}^H\end{array}\right]\end{array}\right]$

wherein, W_jIs the j-th first matrix selected;

V_i，jfor the j-th row vector, V, of the selected i-th secondary matrix_i，j ^HA conjugate transpose of a jth row vector of the ith second matrix;

is the transpose of the i-th column vector of the signal matrix that needs to be sent to the signal receiver.

27. The method of claim 16, wherein sending each signal obtained after the weighting process to the signal receiving side comprises:

and respectively determining a transmitting antenna corresponding to each signal in KxM signals obtained after weighting, determining an antenna element corresponding to the signal in the antenna elements contained in the determined transmitting antenna, and transmitting the signal to the signal receiving party through the determined antenna elements, wherein K is the number of the antenna elements contained in each transmitting antenna of the signal transmitting party, and M is the number of the transmitting antennas of the signal transmitting party.

28. A signal transmission apparatus in a three-dimensional multiple-input multiple-output (3D MIMO) system, comprising:

the signal transmitting device comprises a first matrix selecting unit, a second matrix selecting unit and a signal receiving unit, wherein the first matrix selecting unit is used for selecting a plurality of first matrixes from a preset first codebook set when the signal transmitting device needs to transmit signals to the signal receiving device;

the second matrix selection unit is used for selecting a plurality of second matrixes from a preset second codebook set when the signal sending device needs to send signals to the signal receiving device;

the weighting processing unit is used for carrying out weighting processing on the signal flow which needs to be sent to the signal receiving device according to the first matrix selected by the first matrix selecting unit and the second matrix selected by the second matrix selecting unit;

and the signal sending unit is used for sending each signal obtained after the weighting processing unit carries out weighting processing to the signal receiving device.

29. The signal transmission apparatus of claim 28, further comprising:

the first matrix identification receiving unit is used for receiving the matrix identifications of the plurality of first matrixes fed back by the signal receiving party before the first matrix selecting unit selects the plurality of first matrixes from the preset first codebook set;

the first matrix selection unit is specifically configured to select a corresponding number of first matrices from a preset first codebook set according to the matrix identifiers of the plurality of first matrices received by the first matrix identifier receiving unit;

a second matrix identifier receiving unit, configured to receive the matrix identifiers of the plurality of second matrices fed back by the signal receiving unit before the second matrix selecting unit selects the plurality of second matrices from the preset second codebook set;

the second matrix selecting unit is specifically configured to select a corresponding number of second matrices from a preset second codebook set according to the matrix identifiers of the plurality of second matrices received by the second matrix identifier receiving unit.

30. The apparatus according to claim 29, wherein the first matrix identifier receiving unit is specifically configured to receive matrix identifiers of a plurality of first matrices respectively fed back by the signal receiver for preset subbands;

the first matrix selection unit is specifically configured to determine, for each physical resource block PRB requiring transmission of a signal to a signal receiver, matrix identifiers of a plurality of first matrices fed back by the signal receiver for subbands to which the PRB belongs, and select, according to the determined matrix identifiers of the first matrices, a corresponding number of first matrices from a preset first codebook set;

the second matrix identification receiving unit is specifically used for receiving the matrix identifications of a plurality of second matrices respectively fed back by the signal receiver aiming at preset sub-bands;

the second matrix selection unit is specifically configured to determine, for each PRB needing to send a signal to the signal receiver, matrix identifiers of a plurality of second matrices fed back by the signal receiver for subbands to which the PRB belongs, and select, according to the determined matrix identifiers of the second matrices, a corresponding number of second matrices from a preset second codebook set;

and the weighting processing unit is specifically configured to, for each PRB that needs to send a signal to the signal receiver, perform weighting processing on a signal matrix that needs to be sent to the signal receiver in the PRB according to the first matrix selected by the first matrix selecting unit for the PRB and the second matrix selected by the second matrix selecting unit for the PRB, respectively.

31. The apparatus according to claim 28, wherein the signal sending unit is specifically configured to determine, for each of K × M signals obtained after the weighting processing by the weighting processing unit, a corresponding transmit antenna for the signal, determine an antenna element corresponding to the signal from antenna elements included in the determined transmit antenna, and send the signal to the signal receiving side through the determined antenna element, where K is the number of antenna elements included in each transmit antenna of the signal sending side, and M is the number of transmit antennas of the signal sending side.

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