WO2013107367A1 - 码本反馈方法及信号接收装置、信号发送方法及装置 - Google Patents
码本反馈方法及信号接收装置、信号发送方法及装置 Download PDFInfo
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- WO2013107367A1 WO2013107367A1 PCT/CN2013/070627 CN2013070627W WO2013107367A1 WO 2013107367 A1 WO2013107367 A1 WO 2013107367A1 CN 2013070627 W CN2013070627 W CN 2013070627W WO 2013107367 A1 WO2013107367 A1 WO 2013107367A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a codebook feedback method, a signal receiving apparatus, a signal transmitting method and a device. Background technique
- MIMO Multiple-input-multiple-output
- the space division feature of the MIMO system enables the system to support multiple data streams, which improves the throughput of the system.
- the diversity characteristics of the MIMO system can improve the reliability of the system transmission and improve the user experience.
- the currently adopted MIMO technology belongs to two-dimensional (2D, 2 Dimensions) MIMO technology.
- the precoding/beamforming technique corresponds to the M transmit antennas.
- the signal is weighted to match the current channel, thereby improving system performance.
- each antenna consists of K small units (which can be called antenna elements).
- the 3D MIMO system can directly control each antenna element through baseband processing.
- precoding/beam assignment The type technique can weight the signals corresponding to the MxK antenna elements.
- 3D MIMO technology can dynamically change part of the bandwidth or the downtilt angle of the whole antenna through the processing of the baseband signal. On the one hand, it can improve the energy of the current user receiving signal, on the other hand, it can effectively suppress the system between The interference can improve the overall performance of the wireless network.
- Embodiments of the present invention provide a codebook feedback method, a signal receiving apparatus, a signal transmitting method, and a device, which are used to provide a specific implementation scheme for transmitting signals between a signal sender and a signal receiver in a 3D MIMO system.
- a codebook feedback method in a three-dimensional multiple input multiple output 3D MIMO system comprising the steps of: 3D MIMO a signal receiver in the system selects a plurality of first matrices from a preset first set of codebooks, and selects a plurality of second matrices from a preset second set of codebooks; a matrix of the selected first matrix The matrix identifier of the identified and selected second matrix is sent to the signal sender.
- a signal receiving apparatus in a three-dimensional multiple-input multiple-output 3D MIMO system comprising: a first matrix selecting unit, configured to select, if the first first codebook set is preset, a thousand first matrix; a second matrix selecting unit, For selecting a plurality of second matrices from a preset second set of codebooks; a sending unit, a matrix identifier for selecting a first matrix selected by the first matrix selecting unit, and a second selected by the second matrix selecting unit The matrix identification of the matrix is sent to the signal transmitting device.
- a signal transmission method in a three-dimensional multiple-input multiple-output 3D MIMO system comprising the steps of: when a signal sender in a 3D MIMO system needs to send a signal to a signal receiver, select from a preset first codebook set Thousand first matrices, selecting a plurality of second matrices from a preset second set of codebooks; and a signal matrix to be sent to the signal receiver according to the selected plurality of first matrices and if the thousands of second matrices Performing a weighting process; and transmitting each signal obtained after the weighting process to the signal receiver.
- a signal transmitting apparatus in a three-dimensional multiple-input multiple-output 3D MIMO system comprising: a first matrix selecting unit, configured to: when the signal transmitting apparatus needs to send a signal to a signal receiving apparatus, from a preset first codebook set Selecting a plurality of first matrices; a second matrix selecting unit, configured to select a plurality of second matrices from a preset second set of codebooks when the signal transmitting apparatus needs to send a signal to the signal receiving apparatus; a unit, configured to perform weighting processing on a signal stream that 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; Each signal obtained by the weighting processing unit after the weighting process is transmitted to the signal receiving device.
- 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 preset number of first matrices, and the second codebook set includes a preset a plurality of second matrices, when the signal sender in the 3D MIMO system needs to send a signal to the signal receiver, select a plurality of first matrices from the first codebook set, and select from the preset second codebook set. Thousand second matrices, and weighting the signal matrix to be sent to the signal receiver according to the selected first matrix and the plurality of second matrices, and then transmitting the signals obtained by the weighting processing to the Signal receiver.
- the embodiment of the present invention provides a specific implementation scheme for transmitting signals between a signal sender and a signal receiver in a 3D MIMO system, which can effectively reduce the overhead of codebook feedback, improve system performance, and reduce system implementation.
- FIG. 1 is a schematic structural diagram of a transmitting antenna of a 2D MIMO system in the prior art
- FIG. 2 is a schematic structural diagram of a transmitting antenna of a 3D MIMO system in the prior art
- 3 is a schematic flowchart of a codebook feedback method in a 3D MIMO system according to Embodiment 1 of the present invention
- 4 is a schematic structural diagram of a signal receiving apparatus in a 3D MIMO system according to Embodiment 2 of the present invention
- FIG. 5 is a schematic flowchart of a signal sending method in a 3D MIMO system according to Embodiment 3 of the present invention.
- FIG. 6 is a schematic structural diagram of a signal transmitting apparatus in a 3D MIMO system according to Embodiment 4 of the present invention. detailed description
- FIG. 3 it is a flowchart of a codebook feedback method in a 3D MIMO system according to Embodiment 1 of the present invention, and the specific processing procedure is as follows:
- Step 31 The signal receiver in the 3D MIMO system selects a thousand first matrices from a preset first set of codebooks, and selects a thousand second matrices from a preset second set of codebooks.
- the signal sender in the 3D MIMO system may be a base station, and the corresponding signal receiver is a user equipment (UE, User Equipment), and the signal sender may also be a UE, and the corresponding signal receiver is a base station.
- UE User Equipment
- the signal receiver can select, but is not limited to, the first matrix and the second matrix according to a preset selection criterion.
- the selection criterion can be the largest capacity, the least interference, or the signal to interference plus noise ratio (SINR, Signal to Interference plus Noise). Ratio ) is the highest.
- the signal sender in the 3D MIMO system uses M transmit antennas, and each transmit antenna is composed of K antenna elements, and the corresponding number is (X, y).
- the set of antenna elements in the same horizontal direction is (1, y), (2, y), ..., (M, y), and y corresponds to the line.
- a first codebook set C1 and a second codebook set C2 are preset for the 3D MIMO system, specifically:
- the first matrix subset P1 corresponds to the row number 1 (ie, the number of rows of the signal matrix is 1)
- the first matrix subset ⁇ 2 corresponds to the row number 2 (ie, the number of rows of the signal matrix is 2)
- a matrix subset Pi corresponds to the number of rows i (i.e., the number of rows in the signal matrix is i).
- the signal receiver selects the first matrix from the first codebook set C1, firstly, according to the number of rows of the signal matrix to be received, among the first matrix subsets included in the first codebook set, The first matrix subset corresponding to the number of rows of the received signal matrix is selected, and the first matrix is selected from the selected first matrix subset.
- the number of rows of each first matrix in each first matrix subset is an antenna included in each transmitting antenna of the signal sender
- the number of rows K, the number of columns is the number of rows of the signal matrix received by the signal receiver.
- the size of each first matrix in the first matrix subset P1 is Kx l
- the first matrix in the first matrix subset P2 The size of each matrix is Kx2
- the size of each first matrix in the first matrix subset Pi is Kxi.
- the second matrix subset R1 corresponds to the column number 1 (ie, the number of columns of the signal matrix is 1)
- the second matrix subset R2 corresponds to the column number 2 (ie, the number of columns of the signal matrix is 2)
- the second matrix subset Ri corresponds to the number of columns i (ie, the number of columns in the signal matrix is i).
- the signal receiver selects the thousands of second matrices from the second codebook set C2, firstly, according to the number of columns of the signal matrix to be received, among the plurality of second matrix subsets included in the second codebook set, The second matrix subset corresponding to the number of columns of the received signal matrix is selected, and the second matrix is selected from the selected second matrix subset.
- the number of rows of each second matrix in each second matrix subset is the number M of transmitting antennas of the signal sender, and the number of columns is the number of columns of the signal matrix received by the signal receiver, for example, each of the first matrix subset R1
- the size of the second matrix is Mx l
- the size of each second matrix in the second matrix subset R2 is ⁇ 2
- so on the size of each second matrix in the second matrix subset Ri is Mxi.
- Each first matrix in the first codebook set C1 has a corresponding number, that is, a corresponding matrix identifier
- each second matrix in the second codebook set C2 also has a corresponding number, that is, a corresponding matrix identifier.
- the signal receiver selects a plurality of first matrices from the first codebook set C1
- the following three methods may be used:
- the signal receiver selects a first matrix from the preset first codebook set C1;
- the signal receiver selects J first matrices from the preset first codebook set C1, where J is the number of columns of the signal matrix received by the signal receiver;
- the signal receiver selects M first matrices from the preset first codebook set C1.
- the signal receiver selects a second matrix from the preset second codebook set C2;
- the signal receiver selects K second matrices from the preset second codebook set C2;
- the signal receiver selects one second matrix from the preset second codebook set, where I is the number of rows of the signal matrix received by the signal receiver.
- the signal receiving direction signal sender has the following seven methods:
- the first feedback mode The signal receiver selects a first matrix from the preset first codebook set C1. Selecting a second matrix from the preset second codebook set C2;
- the second feedback mode the signal receiver selects J first matrices from the preset first codebook set C1. Selecting a second matrix from the preset second codebook set C2;
- the third feedback mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
- the fourth feedback mode the signal receiver selects J first matrices from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
- the fifth feedback mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects a second matrix from the preset second codebook set C2;
- the sixth feedback mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2;
- the seventh feedback mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2.
- Step 32 Send the selected matrix identifier of the first matrix and the selected matrix identifier of the second matrix to the signal sender.
- the signal receiver may, but is not limited to, performing codebook feedback periodically, and the first codebook set C1 and the second codebook set C2 correspond to the same feedback period, for example, simultaneously feeding back the matrix identifier of the first matrix and the second matrix.
- the matrix identifier, the first codebook set C1 and the second codebook set C2 may also correspond to different feedback periods.
- the feedback period of the first codebook set C1 may be an integer multiple of the feedback period of the second codebook set C2.
- the signal receiver selects a first matrix
- the selected matrix identifier of the first matrix is sent to the signal sender. If M or J first matrices are selected, each of the selected first matrices is respectively selected. The corresponding matrix identifier is sent to the signal sender.
- the signal receiver selects a second matrix
- the matrix identifier of the selected second matrix is sent to the signal sender, if K or I are selected. The two matrix sends the matrix identifier corresponding to each of the selected second matrices to the signal sender.
- the signal receiver and the signal sender may pre-store the first codebook set C1 and the second codebook set C2, followed by The codebook feedback may be directly used by using the pre-stored first codebook set C1 and the second codebook set C2; in addition, the signal receiver and the signal sender may also obtain the first codebook set C1 and the second from the network device periodically. Codebook set C2.
- the signal receiver may perform codebook feedback based on the full bandwidth, or may perform codebook feedback based on the subband, and preset each subband for performing codebook feedback, and the signal receiver selects the first matrix and In the second matrix, for each of the preset sub-bands, a thousand first matrices are respectively selected from the preset first codebook set, and a thousand second matrices are selected from the preset second codebook set. Then, for each of the preset subbands, the matrix identifier of the first matrix selected for the subband and the matrix identifier of the selected second matrix are respectively sent to the signal sender.
- Embodiment 2 Corresponding to the codebook feedback method in the 3D MIMO system according to the first embodiment of the present invention, the second embodiment of the present invention provides a signal receiving apparatus in a 3D MIMO system, and the structure thereof is as shown in FIG. 4, including:
- a first matrix selecting unit 41 configured to select a plurality of first matrices from a preset first set of codebooks
- a second matrix selecting unit 42 configured to select a plurality of seconds from a preset second set of codebooks
- the transmitting unit 43 is 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 the signal transmitting apparatus.
- the first codebook set includes a plurality of first matrix subsets, each of the first matrix subsets includes a plurality of first matrices, each of the first matrix subsets respectively corresponding to a signal matrix received by the signal receiver
- the number of rows of each first matrix in the first matrix subset is the number of antenna elements included in each transmitting antenna of the signal sender, and the number of columns is the number of rows of the signal matrix received by the signal receiver;
- the first matrix selecting unit 41 specifically includes:
- a first matrix sub-set selection sub-unit configured to select, according to the number of rows of the signal matrix that the signal receiving device needs to receive, a plurality of first matrix subsets included in the first codebook set, and select a signal matrix to be received The first matrix subset corresponding to the number of rows;
- the first matrix selection sub-unit is configured to select a plurality of first matrices from the first matrix subset selected by the first matrix sub-set selection sub-unit.
- the second codebook set includes a plurality of second matrix subsets, each second matrix subset includes a plurality of second matrices, each of the second matrix subsets respectively corresponding to the signal matrix received by the signal receiver
- the number of rows of each second matrix in the second matrix subset is the number of transmit antennas of the signal sender, 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 sub-set selection sub-unit configured to select, according to the number of columns of the signal matrix that the signal receiving device needs to receive, a plurality of second matrix subsets included in the second codebook set, and select a signal matrix to be received a second matrix subset corresponding to the number of columns;
- a second matrix selection sub-unit configured to select a plurality of second matrices from the second matrix sub-set selected by the second matrix sub-set selection sub-unit.
- the first matrix selecting unit 41 is configured to select, for each preset subband, a plurality of first matrices from a preset first set of codebooks;
- the second matrix selecting unit 42 is specifically configured to select, for each preset subband, a thousand second matrices from a preset second codebook set;
- the sending unit 43 is specifically configured to: respectively, for each preset subband, a matrix identifier of the first matrix selected by the first matrix selecting unit for the subband and a second selected by the second matrix selecting unit for the subband The matrix identifier of the matrix is sent to the signal sender.
- the first matrix selecting unit 41 is specifically configured to select a first matrix from the preset first codebook set;
- the second matrix selecting unit 42 is specifically configured to select a second matrix from the preset second codebook set.
- the first matrix selecting unit 41 is specifically configured to select J first matrices from a preset first set of codebooks, where J is a number of columns of signal matrices received by the signal receiver;
- the second matrix selecting unit 42 is specifically configured to select a second matrix from the preset second codebook set.
- the first matrix selecting unit 41 is specifically configured to select a first matrix from the preset first codebook set;
- the second matrix selecting unit 42 is specifically configured to select K second matrices from the preset second set of codebooks, where K is the number of antenna matrices included in each antenna of the signal sender.
- the first matrix selecting unit 41 is specifically configured to select J first matrices from a preset first set of codebooks, where J is a number of columns of signal matrices received by the signal receiver;
- the second matrix selecting unit 42 is specifically configured to select K second matrices from the preset second set of codebooks, where K is the number of antenna matrices included in each antenna of the signal sender.
- the first matrix selecting unit 41 is specifically configured to select M first matrices from the preset first codebook set, where M is the number of transmit antennas of the signal sender;
- the second matrix selecting unit 42 is specifically configured to select a second matrix from the preset second codebook set.
- the first matrix selecting unit 41 is specifically configured to select a first matrix from the preset first codebook set;
- the second matrix selecting unit 42 is specifically configured to select one second matrix from the preset second codebook set, where I is the number of rows of the signal matrix received by the signal receiver.
- the first matrix selecting unit 41 is specifically configured to select M first matrices from the preset first codebook set, where M is the number of transmit antennas of the signal sender;
- the second matrix selecting unit 42 is specifically configured to select one second matrix from the preset second codebook set, where I is the number of rows of the signal matrix received by the signal receiver.
- FIG. 5 it is a flowchart of a signal sending method in a 3D MIMO system according to Embodiment 3 of the present invention, and the specific processing flow is as follows:
- Step 51 When the signal sender in the 3D MIMO system needs to send a signal to the signal receiver, select one thousand first matrices from the preset first codebook set, and select from the preset second codebook set. Thousand second matrices;
- the signal sender in the 3D MIMO system may be a base station, and the corresponding signal receiver is the UE, and the signal sender may also be the UE, and the corresponding signal receiver is the base station.
- the first codebook set mentioned in the third embodiment of the present invention is identical to the first codebook set C1 in the first embodiment of the present invention.
- the second codebook set mentioned in the third embodiment of the present invention and the embodiment of the present invention The second codebook set C2 in one is not repeated here.
- a signal sender in a 3D MIMO system when a signal sender in a 3D MIMO system needs to send a signal to a signal receiver, it may directly select a thousand first matrix in a preset first codebook set C1, for example, selecting a first a matrix or selecting J first matrices or selecting M first matrices, where J is the number of columns of the signal matrix sent by the signal transmitting direction receiver, wherein the signal sender can select the time-sharing method as the signal receiver Selecting the first matrix, for example, at the time of DO, if the number of rows of the transmitted signal matrix is 1, selecting the first first matrix from the first first matrix subset of the first codebook set, at time D1 If the number of rows of the transmitted signal matrix is 1, the second first matrix is selected from the first first matrix subset of the first codebook set, and so on, at the time of Ds, if the signal matrix is transmitted The number of rows is I, and the (s-1)th first matrix is selected from the first first matrix subset of the first codebook
- Second matrix or K second matrix, I is the number of rows of the signal matrix sent by the signal transmitting direction receiver, wherein the signal sender can select the second matrix for the signal receiver in a time-sharing manner, for example
- the first second matrix is selected from the Jth second matrix subset of the second codebook set, and at D1 if the signal matrix is transmitted
- the second second matrix is selected from the Jth second matrix subset of the second codebook set, and so on.
- Ds time if the number of columns of the transmitted signal matrix is J, Then, the (s-1)th second matrix is selected from the Jth second matrix subset of the second codebook set.
- the third embodiment of the present invention further provides that the signal sender may first receive the matrix identifier of the thousands of first matrices and the matrix identifier of the second matrix fed back by the signal receiver, and then, when it is required to send a signal to the signal receiver, according to Receiving the matrix identifiers of the thousands of first matrices, selecting a corresponding number of first matrices from the preset first codebook set, and according to the received matrix identifiers of the plurality of second matrices, from the preset A corresponding number of second matrices are selected in the second codebook set.
- the signal sender can directly select the first matrix corresponding to the matrix identifier of the received first matrix in the first codebook set C1 according to the matrix identifier of the received first matrix, if the signal is received.
- the party feedbacks the matrix identifier of a first matrix, and the signal sender selects the first matrix corresponding to the matrix identifier received in the first codebook set C1, and if the signal receiver feeds back J or M first matrices
- the matrix identifier, the signal sender selects the first matrix corresponding to the matrix identifier in the first codebook set C1 for each matrix identifier received; the signal sender can also directly according to the received second matrix a matrix identifier, in the second codebook set C2, selecting a second matrix corresponding to the matrix identifier of the received second matrix, if the signal receiver feeds back a matrix matrix of the second matrix
- the signal sender selects the received second matrix corresponding to the matrix identifier in the second codebook set C2, and if the signal receiver feeds.
- the signal sender selects the first matrix and the second matrix, not only according to the matrix identifier fed back by the signal receiver, but also can integrate other factors (such as the current system state or matrix identifier of other signal receiver feedback) from the first
- the first matrix is selected from the codebook set C1 and the second matrix is selected from the second codebook set C2.
- the signal sender when the signal sender receives the matrix identifier of the first matrix fed back by the signal receiver, the signal identifier of the first matrix that is respectively fed back by the signal receiver for the preset subbands may be received.
- the signal sender determines, for each physical resource block (PRB) that needs to send a signal to the signal receiver, a matrix identifier of the thousands of first matrices that the signal receiving policy feeds back to the subband to which the PRB belongs, and according to Determining the matrix identifier of the first matrix, selecting a corresponding number of first matrices from the preset first codebook set C1; similarly, when the signal sender receives the matrix identifier of the second matrix fed back by the signal receiver, And receiving, by the signal receiver, matrix identifiers of the plurality of second matrices respectively fed back to the preset subbands, where the signal sender separately determines a signal receiving policy for the PRB for each PRB that needs to send a signal to the signal receiver.
- the PRBs perform weighting processing on the signal matrix that needs to be sent to the signal receiver in the PRB according to the first matrix and the second matrix selected for the PRB.
- the signal sender selects the first matrix and the second matrix in the following seven manners:
- the first selection mode The signal receiver selects a first one from the preset first codebook set C1. a matrix, selecting a second matrix from the preset second codebook set C2;
- the second selection mode the signal receiver selects J first matrices from the preset first codebook set C1, and selects a second matrix from the preset second codebook set C2;
- the third selection mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
- the fourth selection mode the signal receiver selects J first matrices from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
- the fifth selection mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects a second matrix from the preset second codebook set C2;
- the sixth selection mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2;
- the seventh selection mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2.
- Step 52 Perform weighting processing on a signal matrix that needs to be sent to a signal receiver according to the selected first matrix and the plurality of second matrices;
- the size of the signal matrix to be sent to the signal receiver be IxJ, that is, the number of rows of the signal matrix is I, the number of columns is J, and the size of the first matrix in the first codebook set C1 is Kxl, the second codebook set The size of the second matrix in C2 is MxJ.
- the signal sender performs weighting on the signal matrix that needs to be sent to the signal receiver in the following eight ways:
- the first processing mode the signal sender selects a first matrix W from the preset first codebook set C1, and selects a second matrix V from the preset second codebook set C2, which needs to be sent to the signal receiving.
- the square signal matrix is S, where:
- Wi is the i-th row vector of the selected first matrix W.
- the first matrix W has a total of K row vectors
- Sj is the j-th column vector of the signal matrix S
- the signal matrix S has J column vectors.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- VH is the conjugate transposed matrix of the second matrix V.
- KxM signals By performing the weighting process on the signal matrix S that needs to be transmitted to the signal receiver by the above processing method, KxM signals can be obtained.
- Wj,i is the i-th row vector of the selected jth first matrix Wj
- the first matrix Wj has a total of K row vectors
- Sj is the j-th column vector of the signal matrix S
- the signal matrix S has J columns vector.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- VH is the conjugate transposed matrix of the second matrix V.
- the third processing mode the signal sender selects a first matrix w from the preset first codebook set C1, and selects K second matrices V from the preset second codebook set C2, which is recorded as VI.
- the signal matrix that needs to be sent to the receiver of the signal is:
- Wi is the i-th row vector of the selected first matrix W.
- the first matrix W has a total of K row vectors
- Sj is the j-th column vector of the signal matrix S
- the signal matrix S has a total of J column vectors.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- ViH is a conjugate transposed matrix of the i-th second matrix Vi.
- KxM signals By performing the weighting process on the signal matrix S that needs to be transmitted to the signal receiver by the above processing method, KxM signals can be obtained.
- Wj,i is the i-th row vector of the selected jth first matrix Wj
- the first matrix Wj has a total of K row vectors
- Sj is the j-th column vector of the signal matrix S
- the signal matrix S has J columns vector.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- the fifth processing mode the signal sender selects a first matrix W from the preset first codebook set C1, and selects a second matrix V from the preset second codebook set C2, which needs to be sent to the signal receiving.
- the square signal matrix is S, where:
- Vj is the jth row vector of the selected second matrix V
- the second matrix V has M row vectors, which is the transposition of the i-th column vector of the signal matrix S that needs to be sent to the signal receiver, the signal matrix S There are a total of J column vectors.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- VjH is the conjugate transpose of the jth row vector of the second matrix V.
- KxM signals By performing the weighting process on the signal matrix S that needs to be transmitted to the signal receiver by the above processing method, KxM signals can be obtained.
- Vj is the jth row vector of the selected second matrix V
- the second matrix V has M row vectors, which is the transposition of the i-th column vector of the signal matrix S that needs to be sent to the signal receiver, the signal matrix S There are a total of J column vectors.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- VjH is the conjugate transpose of the jth row vector of the second matrix V.
- the signal matrix that needs to be sent to the signal receiver is s, where:
- Vi j is the jth row vector of the selected i-th second matrix Vi
- the second matrix Vi has M row vectors
- A is the i-th column vector of the signal matrix S to be sent to the signal receiver Transposed
- the signal matrix S has a total of J column vectors.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- Vi H is a conjugate transpose of the j-th row vector of the i-th second matrix Vi.
- Vij is the jth row vector of the selected i-th second matrix Vi, and the second matrix Vi has M row vectors, which is the transposition 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 a total of J column vectors.
- the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
- VijH is a conjugate transpose of the jth row vector of the i-th second matrix Vi.
- Step 53 Send each signal obtained after the weighting process to the signal receiver.
- the signal sender determines a corresponding transmit antenna for each of the KxM signals obtained after the weighting process, and determines an antenna frame corresponding to the signal in the determined antenna array included in the transmit antenna, and determines The antenna element transmits the signal to the signal receiver.
- the third embodiment of the present invention proposes that if the signals transmitted by multiple antenna elements on the same transmitting antenna are always in a fixed relationship, the antenna antennas can be equivalently regarded as a virtual/logical antenna array.
- 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, ⁇ ⁇ , and the above scheme can still be used at this time, except that ⁇ is used instead of ⁇ .
- the first codebook set and the second codebook set are set in advance for the 3D UI system, where the first codebook set includes a preset number of the first matrix, and the second The codebook set includes a preset number of second matrixes, and when the signal sender in the 3D system needs to send a signal to the signal receiver, the first matrix is selected from the first codebook set, and the first matrix is preset.
- the embodiment of the present invention provides a specific implementation scheme for transmitting signals between a signal sender and a signal receiver in a 3D system, which can effectively reduce the overhead of codebook feedback, improve system performance, and reduce system implementation. The overall complexity.
- the fourth embodiment of the present invention provides a signal transmission apparatus in a 3D MIMO system, and the structure thereof is as shown in FIG. 6, which includes:
- the first matrix selecting unit 61 is configured to select, when the signal sending device needs to send a signal to the signal receiving device, a plurality of first matrices from the preset first codebook set;
- a second matrix selecting unit 62 configured to select, when the signal sending device needs to send a signal to the signal receiving device, a plurality of second matrices from a preset second codebook set;
- the weighting processing unit 63 is configured to perform weighting processing on the signal stream that needs to be sent to the signal receiving device 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;
- the signal transmitting unit 64 transmits, to the signal receiving device, each signal obtained by performing weighting processing by the weighting processing unit 63.
- the signal sending device further includes:
- a first matrix identifier receiving unit configured to receive a matrix identifier of the plurality of first matrices fed back by the signal receiver before the first matrix selecting unit 61 selects the plurality of first matrices from the preset first codebook set;
- the first matrix selecting unit 61 is specifically configured to identify, according to the first matrix, a plurality of first matrices received by the receiving unit a matrix identifier, selecting a corresponding number of first matrices from a preset first set of codebooks; a second matrix identifier receiving unit, configured to select, in the second matrix selection unit 62, from a preset second set of codebooks Before a plurality of second matrices, receiving matrix identifiers of the plurality of second matrices fed back by the signal receiver;
- the second matrix selecting unit 62 is configured to select a corresponding number of second matrices from the preset second codebook set according to the matrix identifiers of the plurality of second matrices received by the second matrix identifier receiving unit.
- the first matrix identifier receiving unit is specifically configured to receive, by the signal receiving party, matrix identifiers of the plurality of first matrices respectively fed back for the preset subbands;
- the first matrix selection unit 61 is specifically configured to determine, for each PRB that needs to send a signal to the signal receiver, a matrix identifier of the first matrix of the signal received by the subband of the PRB, and according to the determined a matrix identifier of the first matrix, and selecting a corresponding number of first matrices from the preset first codebook set;
- a second matrix identifier receiving unit configured to receive, by the signal receiving party, matrix identifiers of the thousands of second matrices respectively fed back for the preset subbands;
- the second matrix selecting unit 62 is specifically configured to determine, for each PRB that needs to send a signal to the signal receiving party, a matrix identifier of the plurality of second matrices that the signal receiving policy feeds back to the subband to which the PRB belongs, and according to the determined a matrix identifier of the second matrix, selecting a corresponding number of second matrices from the preset second codebook set;
- the weighting processing unit 63 is specifically configured to: for each PRB that needs to send a signal to the signal receiver, respectively, according to the first matrix selected by the first matrix selecting unit for the PRB and the second matrix selecting unit for the PRB The two matrix weights the signal matrix that needs to be sent to the signal receiver in the PRB.
- the signal sending unit is specifically configured to determine, for each of the KxM signals obtained by weighting the weighting processing unit, a corresponding transmit antenna, and determine the antenna frame included in the determined transmit antenna.
- 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 an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the second matrix selecting unit 62 is specifically configured to select a second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
- the weighting processing unit 63 performs weighting processing on the signal matrix that needs to be transmitted to the signal receiver in the following manner:
- Wi is the ith row vector of the selected first matrix
- V is a selected second matrix
- VH is a conjugate transposed matrix of the second matrix V
- Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
- the first matrix selecting unit 61 is specifically configured to select J first matrices from a preset first set of codebooks, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal sender Number ⁇ , the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the second matrix selecting unit 62 is specifically configured to select a second matrix from a preset second codebook set, where the number of rows of the second matrix is the number of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
- the weighting processing unit 63 weights the signal matrix that needs to be transmitted to the signal receiver in the following manner:
- Wj,i is the ith row vector of the selected jth first matrix
- V is a selected second matrix
- VH is a conjugate transposed matrix of the second matrix V
- Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
- 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 an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the second matrix selecting unit 62 is specifically configured to select K second matrices from a preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
- the weighting processing unit 63 performs weighting processing on the signal matrix that needs to be transmitted to the signal receiver in the following manner: [ w x s x w x s 2
- Wi is the ith row vector of the selected _ matrix
- Vi is the selected i-th second matrix, and ViH is the conjugate transposed matrix of the i-th second matrix Vi;
- Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
- the first matrix selecting unit 61 is configured to select J first matrices from a preset first set of codebooks, the number of rows of the first matrix being each transmission of the signal sender
- the number of antenna elements included in the antenna ⁇ , the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the second matrix selecting unit 62 is specifically configured to select a second matrix from a preset second codebook set, where the number of rows of the second matrix is the number of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
- the weighting processing unit 63 weights the signal matrix that needs to be transmitted to the signal receiver in the following manner:
- Wj,i is the ith row vector of the selected jth first matrix
- Vi is the selected i-th second matrix, and ViH is the conjugate transposed matrix of the i-th second matrix Vi;
- Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
- 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 an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the second matrix selecting unit 62 is specifically configured to select a second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
- the weighting processing unit 63 performs weighting processing on the signal matrix that needs to be transmitted to the signal receiver in the following manner:
- w is the selected first matrix
- VjH is a conjugate transpose of the jth row vector of the second matrix V;
- S i is the transpose of the ith column vector of the signal matrix that needs to be sent to the signal receiver.
- the first matrix selecting unit 61 is specifically configured to select M first matrices from a preset first set of codebooks, where the number of rows of the first matrix is an antenna ray included in each transmitting antenna of the signal transmitting party.
- Number K the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the second matrix selecting unit 62 is specifically configured to select a second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
- Weighting processing unit Description The signal sent to the signal receiver Weighting:
- Wj is the selected jth first matrix
- ⁇ is the selected second matrix
- VjH is the conjugate transpose of the jth row vector of the second matrix V
- Si is the transposition of the ith column vector of the signal matrix that needs to be sent to the signal receiver.
- 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 an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the second matrix selecting unit 62 is specifically configured to select one second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
- the weighting processing unit 63 describes the manner in which the weighting process needs to be sent to the receiver:
- W is the selected first matrix
- Vij is the jth row vector of the selected i-th second matrix
- Vi H is the yoke transpose of the j-th row vector of the i-th second matrix
- Si is the transposition of the ith column vector of the signal matrix that needs to be sent to the signal receiver.
- the first matrix selecting unit 61 is specifically configured to select M first matrices from a preset first set of codebooks, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal transmitting party.
- Number K the number of columns is the number of rows I of the signal matrix received by the signal receiver;
- the first matrix selecting unit 62 is specifically configured to select one second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
- the weighting processing unit 63 weights the signal matrix that needs to be transmitted to the signal receiver in the following manner:
- Wj is the selected jth first matrix
- Vij is the jth row vector of the selected ith second matrix, and VijH is the yoke transpose of the jth row vector of the i th second matrix;
- Si is the transposition of the ith column vector of the signal matrix that needs to be sent to the signal receiver.
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Description
码本反馈方法及信号接收装置、 信号发送方法及装置 本申请要求在 2012年 1月 19日提交中国专利局、 申请号为 201210018007.7、发明名称 为"码本反馈方法及信号接收装置、 信号发送方法及装置"的中国专利申请的优先权, 其全部内 容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域, 尤其涉及一种码本反馈方法及信号接收装置、 信号发送方 法及装置。 背景技术
多输入多输出 ( MIMO , Multiple-Input-Multiple-Output ) 技术是目前主流无线通信系 统的关键技术之一。 MIMO系统的空分特性可以使系统支持多个数据流, 提高了系统的吞 吐量, MIMO系统的分集特性, 可以提高系统传输的可靠性, 改善了用户体验。
当前采用的 MIMO技术都是属于二维( 2D, 2 Dimensions ) MIMO技术, 如图 1所示, 当信号发送方采用 M个发射天线时, 预编码 /波束赋型技术通过对 M个发射天线对应的信 号进行加权处理, 使其匹配当前信道, 从而提高了系统的性能。
随着硬件技术的进步, MIMO技术从 2D向三维 (3D, 3 Dimensions )扩展将在未来 成为现实。 在 3D MIMO技术中, 每个天线由 K个小单元 (可以称为天线阵子)组成, 如 图 2所示, 3D MIMO系统可以通过基带处理直接控制每个天线阵子, 此时预编码 /波束赋 型技术可以对 MxK 个天线阵子对应的信号进行加权处理。 和 2D MIMO 技术相比, 3D MIMO技术通过基带信号的处理, 可以动态的改变部分带宽或者整个天线的下倾角, 一方 面可以提高当前用户接收信号的能量, 另一方面可以有效抑制系统之间的千扰, 从而可以 提高无线网络的整体性能。
但是, 现有技术还没有提出 3D MIMO系统中的信号发送方和信号接收方之间传输信 号的具体实现方案。 发明内容
本发明实施例提供一种码本反馈方法及信号接收装置、 信号发送方法及装置, 用以提 出一种 3D MIMO系统中的信号发送方和信号接收方之间传输信号的具体实现方案。
本发明实施例技术方案如下:
一种三维多输入多输出 3D MIMO系统中的码本反馈方法,该方法包括步驟: 3D MIMO
系统中的信号接收方从预先设置的第一码本集合中选择若干个第一矩阵, 以及从预先设置 的第二码本集合中选择若干个第二矩阵; 将选择出的第一矩阵的矩阵标识和选择出的第二 矩阵的矩阵标识发送给信号发送方。
一种三维多输入多输出 3D MIMO系统中的信号接收装置, 包括: 第一矩阵选择单元, 用于从预先设置的第一码本集合中选择若千个第一矩阵; 第二矩阵选择单元, 用于从预先 设置的第二码本集合中选择若干个第二矩阵; 发送单元, 用于将第一矩阵选择单元选择出 的第一矩阵的矩阵标识和第二矩阵选择单元选择出的第二矩阵的矩阵标识发送给信号发 送装置。
一种三维多输入多输出 3D MIMO系统中的信号发送方法,该方法包括步驟: 3D MIMO 系统中的信号发送方需要向信号接收方发送信号时, 从预先设置的第一码本集合中选择若 千个第一矩阵, 从预先设置的第二码本集合中选择若干个第二矩阵; 根据选择出的若干个 第一矩阵和若千个第二矩阵, 对需要发送给信号接收方的信号矩阵进行加权处理; 并将加 权处理后得到的各信号发送给所述信号接收方。
一种三维多输入多输出 3D MIMO系统中的信号发送装置, 包括: 第一矩阵选择单元, 用于在所述信号发送装置需要向信号接收装置发送信号时, 从预先设置的第一码本集合中 选择若干个第一矩阵; 第二矩阵选择单元, 用于在所述信号发送装置需要向信号接收装置 发送信号时, 从预先设置的第二码本集合中选择若干个第二矩阵; 加权处理单元, 用于根 据第一矩阵选择单元选择出的第一矩阵以及第二矩阵选择单元选择出的第二矩阵, 对需要 发送给信号接收装置的信号流进行加权处理; 信号发送单元, 用于将加权处理单元进行加 权处理后得到的各信号发送给所述信号接收装置。
本发明实施例技术方案中, 预先针对 3D MIMO系统设置第一码本集合和第二码本集 合,第一码本集合包含预设的若干个第一矩阵,第二码本集合包含预设的若干个第二矩阵, 3D MIMO 系统中的信号发送方需要向信号接收方发送信号时, 从第一码本集合中选择出 若干个第一矩阵, 从预先设置的第二码本集合中选择若千个第二矩阵, 并根据选择出的若 干个第一矩阵和若干个第二矩阵, 对需要发送给信号接收方的信号矩阵进行加权处理, 然 后将加权处理后得到的各信号发送给所述信号接收方。 由上可见, 本发明实施例提出了一 种 3D MIMO系统中的信号发送方和信号接收方之间传输信号的具体实现方案, 可以有效 地降低码本反馈的开销, 提高系统性能, 降低系统实现的整体复杂度。 附图说明
图 1为现有技术中, 2D MIMO系统发射天线结构示意图;
图 2为现有技术中, 3D MIMO系统发射天线结构示意图;
图 3为本发明实施例一中, 3D MIMO系统中的码本反馈方法流程示意图;
图 4为本发明实施例二中, 3D MIMO系统中的信号接收装置结构示意图;
图 5为本发明实施例三中, 3D MIMO系统中的信号发送方法流程示意图;
图 6为本发明实施例四中, 3D MIMO系统中的信号发送装置结构示意图。 具体实施方式
下面结合各个附图对本发明实施例技术方案的主要实现原理、 具体实施方式及其对应 能够达到的有益效果进行详细地阐述。
实施例一
如图 3所示, 为本发明实施例一提出的 3D MIMO系统中的码本反馈方法流程图, 其 具体处理过程如下:
步 31, 3D MIMO系统中的信号接收方从预先设置的第一码本集合中选择若千个第 一矩阵, 以及从预先设置的第二码本集合中选择若千个第二矩阵。
3D MIMO系统中的信号发送方可以为基站,那么对应的信号接收方为用户设备(UE, User Equipment ), 信号发送方也可以为 UE, 那么对应的信号接收方为基站。
信号接收方可以但不限于根据预先设定的选取准则来选择第一矩阵和第二矩阵, 选取 准则可以为容量最大、 千扰最小或信号与千扰加噪声比(SINR, Signal to Interference plus Noise Ratio )最高。
设 3D MIMO系统中的信号发送方采用 M个发射天线,每个发射天线由 K个天线阵子 组成, 其对应的编号为 (X, y )。 其中, X对应于天线阵子所属发射天线的编号(x=l, ..., M ), y对应于天线阵子在发射天线上的编号 (y=l , ... , K ), 如图 2所示, 同一水平方向 (同一行)上的天线阵子集合为 (1 , y ), (2 , y ), ..., (M, y ), y对应行。
本发明实施例一中, 针对 3D MIMO系统预先设置两个不同的码本集合, 第一码本集 合 C1和第二码本集合 C2, 具体的:
1、 第一码本集合 C1中包含 T个第一矩阵子集合, T≤K, 每个第一矩阵子集合记为 Pi ( i=l , ... , Τ ), 每个第一矩阵子集合包含若干个第一矩阵, 用于对一个发射天线的 Κ个天 线阵子所对应的信号进行加权, 其中, 每个第一矩阵子集合分别与信号接收方接收的信号 矩阵的行数对应, 例如, 第一矩阵子集合 P1与行数 1 (即信号矩阵的行数为 1 )对应, 第 一矩阵子集合 Ρ2与行数 2 (即信号矩阵的行数为 2 )对应, 依此类推, 第一矩阵子集合 Pi 与行数 i (即信号矩阵中的行数为 i )对应。
信号接收方从第一码本集合 C1 中选择若千个第一矩阵时, 首先根据需要接收的信号 矩阵的行数, 在第一码本集合包含的若干个第一矩阵子集合中, 选取与需要接收的信号矩 阵的行数对应的第一矩阵子集合, 并从选取出的第一矩阵子集合中选择若千个第一矩阵。
每个第一矩阵子集合中各第一矩阵的行数为信号发送方的每个发射天线包含的天线
阵子的数目 K, 列数为信号接收方接收的信号矩阵的行数, 例如, 第一矩阵子集合 P1 中 各第一矩阵的大小均为 Kx l , 第一矩阵子集合 P2中各第一矩阵的大小均为 Kx2 , 依此类 推, 第一矩阵子集合 Pi中各第一矩阵的大小均为 Kxi。
2、 第二码本集合 C2中包含 G个第二矩阵子集合, G≤M, 每个第二矩阵子集合记为 Ri ( i=l , G ), 每个第二矩阵子集合包含若千个第二矩阵, 用于对同一水平方向上(同 一行)的 M个天线阵子所对应的信号进行加权, 其中, 每个第二矩阵子集合分别与信号接 收方接收的信号矩阵的列数对应, 例如, 第二矩阵子集合 R1与列数 1 (即信号矩阵的列数 为 1 )对应, 第二矩阵子集合 R2与列数 2 (即信号矩阵的列数为 2 )对应, 依此类推, 第 二矩阵子集合 Ri与列数 i (即信号矩阵中的列数为 i )对应。
信号接收方从第二码本集合 C2中选择若千个第二矩阵时, 首先根据需要接收的信号 矩阵的列数, 在第二码本集合包含的若干个第二矩阵子集合中, 选取与需要接收的信号矩 阵的列数对应的第二矩阵子集合, 并从选取出的第二矩阵子集合中选择若千个第二矩阵。
每个第二矩阵子集合中各第二矩阵的行数为信号发送方的发射天线的数目 M, 列数为 信号接收方接收的信号矩阵的列数, 例如, 第一矩阵子集合 R1 中各第二矩阵的大小均为 Mx l , 第二矩阵子集合 R2中各第二矩阵的大小均为 Μχ2, 依此类推, 第二矩阵子集合 Ri 中各第二矩阵的大小均为 Mxi。
第一码本集合 C1 中的每个第一矩阵都有对应的编号, 即对应的矩阵标识, 第二码本 集合 C2中的每个第二矩阵也都有对应的编号, 即对应的矩阵标识。
本发明实施例一中, 信号接收方从第一码本集合 C1 中选择若干个第一矩阵时, 可以 有下述三种方式:
1、 信号接收方从预先设置的第一码本集合 C1中选择一个第一矩阵;
2、 信号接收方从预先设置的第一码本集合 C1中选择 J个第一矩阵, J为信号接收方 接收的信号矩阵的列数;
3、 信号接收方从预先设置的第一码本集合 C1中选择 M个第一矩阵。
信号接收方从第二码本集合 C2中选择若干个第二矩阵时, 可以有下述三种方式:
1、 信号接收方从预先设置的第二码本集合 C2中选择一个第二矩阵;
2、 信号接收方从预先设置的第二码本集合 C2中选择 K个第二矩阵;
3、 信号接收方从预先设置的第二码本集合中选择 I个第二矩阵, I为信号接收方接收 的信号矩阵的行数。
本发明实施例一中, 信号接收方向信号发送方反馈码本的方式有下述七种: 第一种反馈方式: 信号接收方从预先设置的第一码本集合 C1 中选择一个第一矩阵, 从预先设置的第二码本集合 C2中选择一个第二矩阵;
第二种反馈方式: 信号接收方从预先设置的第一码本集合 C1 中选择 J个第一矩阵,
从预先设置的第二码本集合 C2中选择一个第二矩阵;
第三种反馈方式: 信号接收方从预先设置的第一码本集合 C1 中选择一个第一矩阵, 从预先设置的第二码本集合 C2中选择 K个第二矩阵;
第四种反馈方式: 信号接收方从预先设置的第一码本集合 C1 中选择 J个第一矩阵, 从预先设置的第二码本集合 C2中选择 K个第二矩阵;
第五种反馈方式: 信号接收方从预先设置的第一码本集合 C1中选择 M个第一矩阵, 从预先设置的第二码本集合 C2中选择一个第二矩阵;
第六种反馈方式: 信号接收方从预先设置的第一码本集合 C1 中选择一个第一矩阵, 从预先设置的第二码本集合 C2中选择 I个第二矩阵;
第七种反馈方式: 信号接收方从预先设置的第一码本集合 C1中选择 M个第一矩阵, 从预先设置的第二码本集合 C2中选择 I个第二矩阵。
步骤 32,将选择出的第一矩阵的矩阵标识和选择出的第二矩阵的矩阵标识发送给信号 发送方。
其中, 信号接收方可以但不限于周期性的进行码本反馈, 第一码本集合 C1和第二码 本集合 C2对应相同的反馈周期, 例如同时反馈第一矩阵的矩阵标识和第二矩阵的矩阵标 识, 第一码本集合 C1和第二码本集合 C2也可以对应不同的反馈周期, 例如, 第一码本集 合 C1的反馈周期可以是第二码本集合 C2的反馈周期的整数倍。
信号接收方若选择了一个第一矩阵, 则将选择的该第一矩阵的矩阵标识发送给信号发 送方, 若选择了 M个或 J个第一矩阵, 则将选择的每个第一矩阵分别对应的矩阵标识发送 给信号发送方, 同理, 信号接收方若选择了一个第二矩阵, 则将选择的该第二矩阵的矩阵 标识发送给信号发送方, 若选择了 K个或 I个第二矩阵, 则将选择的每个第二矩阵分别对 应的矩阵标识发送给信号发送方。
如果第一码本集合 C1和第二码本集合 C2在整个 3D MIMO系统中保持不变, 则信号 接收方和信号发送方可以预先存储第一码本集合 C1和第二码本集合 C2, 后续可以直接使 用预先存储的第一码本集合 C1和第二码本集合 C2进行码本反馈; 此外 ,信号接收方和信 号发送方也可以定时从网络设备中获取第一码本集合 C1和第二码本集合 C2。
此外, 本发明实施例一中, 信号接收方可以基于全带宽进行码本反馈, 也可以基于子 带进行码本反馈, 预先设置进行码本反馈的各子带, 信号接收方选择第一矩阵和第二矩阵 时, 针对预设的每个子带, 分别从预先设置的第一码本集合中选择若千个第一矩阵, 以及 从预先设置的第二码本集合中选择若千个第二矩阵, 然后针对预设的每个子带, 分别将针 对该子带选择出的第一矩阵的矩阵标识和选择出的第二矩阵的矩阵标识发送给信号发送 方。
实施例二
与本发明实施例一提出的 3D MIMO系统中的码本反馈方法对应, 本发明实施例二提 出一种 3D MIMO系统中的信号接收装置, 其结构如图 4所示, 包括:
第一矩阵选择单元 41 , 用于从预先设置的第一码本集合中选择若干个第一矩阵; 第二矩阵选择单元 42, 用于从预先设置的第二码本集合中选择若干个第二矩阵; 发送单元 43 , 用于将第一矩阵选择单元 41选择出的第一矩阵的矩阵标识和第二矩阵 选择单元 42选择出的第二矩阵的矩阵标识发送给信号发送装置。
较佳地, 第一码本集合中包含若干个第一矩阵子集合, 每个第一矩阵子集合包含若干 个第一矩阵, 每个第一矩阵子集合分别与信号接收方接收的信号矩阵的行数对应, 第一矩 阵子集合中各第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目, 列数 为信号接收方接收的信号矩阵的行数;
第一矩阵选择单元 41具体包括:
第一矩阵子集合选取子单元, 用于根据所述信号接收装置需要接收的信号矩阵的行 数, 在第一码本集合包含的若干个第一矩阵子集合中, 选取与需要接收的信号矩阵的行数 对应的第一矩阵子集合;
第一矩阵选择子单元, 用于从第一矩阵子集合选取子单元选取出的第一矩阵子集合中 选择若干个第一矩阵。
较佳地, 第二码本集合中包含若干个第二矩阵子集合, 每个第二矩阵子集合包含若干 个第二矩阵, 每个第二矩阵子集合分别与信号接收方接收的信号矩阵的列数对应, 第二矩 阵子集合中各第二矩阵的行数为信号发送方的发射天线的数目, 列数为信号接收方接收的 信号矩阵的列数;
第二矩阵选择单元 42, 具体包括:
第二矩阵子集合选取子单元, 用于根据所述信号接收装置需要接收的信号矩阵的列 数, 在第二码本集合包含的若干个第二矩阵子集合中, 选取与需要接收的信号矩阵的列数 对应的第二矩阵子集合;
第二矩阵选择子单元, 用于从第二矩阵子集合选取子单元选取出的第二矩阵子集合中 选择若干个第二矩阵。
较佳地, 第一矩阵选择单元 41 , 具体用于针对预设的每个子带, 分别从预先设置的第 一码本集合中选择若干个第一矩阵;
第二矩阵选择单元 42, 具体用于针对预设的每个子带, 分别从预先设置的第二码本集 合中选择若千个第二矩阵;
发送单元 43, 具体用于针对预设的每个子带, 分别将第一矩阵选择单元针对该子带选 择出的第一矩阵的矩阵标识和第二矩阵选择单元针对该子带选择出的第二矩阵的矩阵标 识发送给信号发送方。
较佳地, 第一矩阵选择单元 41 , 具体用于从预先设置的第一码本集合中选择一个第一 矩阵;
第二矩阵选择单元 42 , 具体用于从预先设置的第二码本集合中选择一个第二矩阵。 较佳地, 第一矩阵选择单元 41, 具体用于从预先设置的第一码本集合中选择 J个第一 矩阵, J为信号接收方接收的信号矩阵的列数;
第二矩阵选择单元 42 , 具体用于从预先设置的第二码本集合中选择一个第二矩阵。 较佳地, 第一矩阵选择单元 41 , 具体用于从预先设置的第一码本集合中选择一个第一 矩阵;
第二矩阵选择单元 42 , 具体用于从预先设置的第二码本集合中选择 K个第二矩阵, K 为信号发送方的每个天线包含的天线阵子的数目。
较佳地, 第一矩阵选择单元 41, 具体用于从预先设置的第一码本集合中选择 J个第一 矩阵, J为信号接收方接收的信号矩阵的列数;
第二矩阵选择单元 42 , 具体用于从预先设置的第二码本集合中选择 K个第二矩阵, K 为信号发送方的每个天线包含的天线阵子的数目。
较佳地, 第一矩阵选择单元 41 , 具体用于从预先设置的第一码本集合中选择 M个第 一矩阵, M为信号发送方的发射天线的数目;
第二矩阵选择单元 42 , 具体用于从预先设置的第二码本集合中选择一个第二矩阵。 较佳地, 第一矩阵选择单元 41 , 具体用于从预先设置的第一码本集合中选择一个第一 矩阵;
第二矩阵选择单元 42 , 具体用于从预先设置的第二码本集合中选择 I个第二矩阵, I 为信号接收方接收的信号矩阵的行数。
较佳地, 第一矩阵选择单元 41 , 具体用于从预先设置的第一码本集合中选择 M个第 一矩阵, M为信号发送方的发射天线的数目;
第二矩阵选择单元 42 , 具体用于从预先设置的第二码本集合中选择 I个第二矩阵, I 为信号接收方接收的信号矩阵的行数。
实施例三
如图 5所示,为本发明实施例三提出的一种 3D MIMO系统中的信号发送方法流程图, 其具体处理流程如下:
步驟 51, 3D MIMO系统中的信号发送方需要向信号接收方发送信号时, 从预先设置 的第一码本集合中选择若千个第一矩阵, 从预先设置的第二码本集合中选择若千个第二矩 阵;
其中, 3D MIMO系统中的信号发送方可以为基站, 那么对应的信号接收方为 UE , 信 号发送方也可以为 UE, 那么对应的信号接收方为基站。
本发明实施例三中提到的第一码本集合和本发明实施例一中的第一码本集合 C 1一致, 本发明实施例三中提到的第二码本集合和本发明实施例一中的第二码本集合 C2—致, 这 里不再赘述。
本发明实施例三中, 3D MIMO系统中的信号发送方在需要向信号接收方发送信号时, 可以直接在预设的第一码本集合 C1 中选择若千个第一矩阵, 例如选择一个第一矩阵或选 择 J个第一矩阵或选择 M个第一矩阵, J为信号发送方向信号接收方发送的信号矩阵的列 数, 其中, 信号发送方可以釆取分时选取的方式为信号接收方选择第一矩阵, 例如, 在 DO 时刻,若发送的信号矩阵的行数为 I,则从第一码本集合的第 I个第一矩阵子集合中选择第 1个第一矩阵, 在 D1时刻, 若发送的信号矩阵的行数为 I, 则从第一码本集合的第 I个第 一矩阵子集合中选择第 2个第一矩阵, 依此类推, 在 Ds时刻, 若发送的信号矩阵的行数 为 I, 则从第一码本集合的第 I个第一矩阵子集合中选择第 (s-1 )个第一矩阵。 同理, 3D MIMO系统中的信号发送方在需要向信号接收方发送信号时, 可以直接在预设的第二码本 集合 C2中选择若干个第二矩阵, 例如选择一个第二矩阵或选择 I个第二矩阵或选择 K个 第二矩阵, I 为信号发送方向信号接收方发送的信号矩阵的行数, 其中, 信号发送方可以 采取分时选取的方式为信号接收方选择第二矩阵, 例如, 在 DO时刻, 若发送的信号矩阵 的列数为 J, 则从第二码本集合的第 J个第二矩阵子集合中选择第 1个第二矩阵, 在 D1时 刻,若发送的信号矩阵的列数为 J, 则从第二码本集合的第 J个第二矩阵子集合中选择第 2 个第二矩阵, 依此类推, 在 Ds时刻, 若发送的信号矩阵的列数为 J, 则从第二码本集合的 第 J个第二矩阵子集合中选择第 ( s-1 )个第二矩阵。
此外本发明实施例三还提出, 信号发送方也可以先接收信号接收方反馈的若千个第一 矩阵的矩阵标识以及第二矩阵的矩阵标识, 然后在需要向信号接收方发送信号时, 根据接 收到的若千个第一矩阵的矩阵标识, 从预先设置的第一码本集合中选择出对应数目个第一 矩阵, 以及根据接收到的若干个第二矩阵的矩阵标识, 从预先设置的第二码本集合中选择 出对应数目个第二矩阵。 3D MIMO 系统中的信号接收方向信号发送方反馈第一矩阵的矩 阵标识以及反馈第二矩阵的矩阵标识的方式和本发明实施例一提到的方式一致, 这里不再 赘述。
本发明实施例三中, 信号发送方可以直接根据接收到的第一矩阵的矩阵标识, 在第一 码本集合 C1 中选择接收到的第一矩阵的矩阵标识对应的第一矩阵, 若信号接收方反馈了 一个第一矩阵的矩阵标识, 则信号发送方在第一码本集合 C1 中选择接收到的该矩阵标识 对应的第一矩阵,若信号接收方反馈了 J个或 M个第一矩阵的矩阵标识, 则信号发送方针 对接收到的每个矩阵标识, 分别在第一码本集合 C1 中选择该矩阵标识对应的第一矩阵; 信号发送方也可以直接根据接收到的第二矩阵的矩阵标识, 在第二码本集合 C2中选择接 收到的第二矩阵的矩阵标识对应的第二矩阵, 若信号接收方反馈了一个第二矩阵的矩阵标
识, 则信号发送方在第二码本集合 C2中选择接收到的该矩阵标识对应的第二矩阵, 若信 号接收方反馈了 I个或 K个第二矩阵的矩阵标识, 则信号发送方针对接收到的每个矩阵标 识, 分别在第二码本集合 C2中选择该矩阵标识对应的第二矩阵。 此外, 信号发送方在选 择第一矩阵和第二矩阵时,不仅根据信号接收方反馈的矩阵标识,还可以综合其他因素(例 如当前系统状态或其他信号接收方反馈的矩阵标识)来从第一码本集合 C1 中选择第一矩 阵以及从第二码本集合 C2中选择第二矩阵。
本发明实施例三中, 信号发送方接收信号接收方反馈的第一矩阵的矩阵标识时, 可以 接收信号接收方针对预设的各子带分别反馈的若干个第一矩阵的矩阵标识, 此时信号发送 方针对需要向信号接收方发送信号的每个物理资源块(PRB , Physical Resource Block ), 分 别确定信号接收方针对该 PRB所属子带反馈的若千个第一矩阵的矩阵标识,并根据确定出 的第一矩阵的矩阵标识, 从预先设置的第一码本集合 C1 中选择出对应数目个第一矩阵; 同理, 信号发送方接收信号接收方反馈的第二矩阵的矩阵标识时, 可以接收信号接收方针 对预设的各子带分别反馈的若干个第二矩阵的矩阵标识, 此时信号发送方针对需要向信号 接收方发送信号的每个 PRB , 分别确定信号接收方针对该 PRB所属子带反馈的若干个第 二矩阵的矩阵标识,并根据确定出的第二矩阵的矩阵标识,从预先设置的第二码本集合 C2 中选择出对应数目个第二矩阵; 在对需要发送给信号接收方的信号矩阵进行加权处理时, 信号发送方针对需要向信号接收方发送信号的每个 PRB , 分别根据针对该 PRB选择出的 第一矩阵和第二矩阵, 对该 PRB中需要发送给信号接收方的信号矩阵进行加权处理。
本发明实施例三中, 信号发送方选择第一矩阵和第二矩阵的方式有下述七种: 第一种选择方式: 信号接收方从预先设置的第一码本集合 C1 中选择一个第一矩阵, 从预先设置的第二码本集合 C2中选择一个第二矩阵;
第二种选择方式: 信号接收方从预先设置的第一码本集合 C1 中选择 J个第一矩阵, 从预先设置的第二码本集合 C2中选择一个第二矩阵;
第三种选择方式: 信号接收方从预先设置的第一码本集合 C1 中选择一个第一矩阵, 从预先设置的第二码本集合 C2中选择 K个第二矩阵;
第四种选择方式: 信号接收方从预先设置的第一码本集合 C1 中选择 J个第一矩阵, 从预先设置的第二码本集合 C2中选择 K个第二矩阵;
第五种选择方式: 信号接收方从预先设置的第一码本集合 C1中选择 M个第一矩阵, 从预先设置的第二码本集合 C2中选择一个第二矩阵;
第六种选择方式: 信号接收方从预先设置的第一码本集合 C1 中选择一个第一矩阵, 从预先设置的第二码本集合 C2中选择 I个第二矩阵;
第七种选择方式: 信号接收方从预先设置的第一码本集合 C1中选择 M个第一矩阵, 从预先设置的第二码本集合 C2中选择 I个第二矩阵。
步驟 52,根据选择出的若干个第一矩阵和若干个第二矩阵, 对需要发送给信号接收方 的信号矩阵进行加权处理;
设需要发送给信号接收方的信号矩阵的大小为 IxJ, 即信号矩阵的行数为 I, 列数为 J, 第一码本集合 C1 中的第一矩阵的大小为 Kxl, 第二码本集合 C2中的第二矩阵的大小为 MxJ。
本发明实施例三中, 信号发送方对需要发送给信号接收方的信号矩阵进行加权处理的 方式有下述八种:
第一种处理方式:信号发送方从预先设置的第一码本集合 C1中选择一个第一矩阵 W, 从预先设置的第二码本集合 C2中选择一个第二矩阵 V, 需要发送给信号接收方的信号矩 阵为 S , 其中:
W w{ κ .
Wi为选择出的第一矩阵 W的第 i个行向量,第一矩阵 W共有 K个行向量, Sj为信号 矩阵 S的第 j个列向量, 信号矩阵 S共有 J个列向量。
此时信号发送方通过下述方式对需要发送给信号接收方的信号矩阵 S进行加权处理:
其中, VH为第二矩阵 V的共轭转置矩阵。
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到 KxM个信号。
第二种处理方式: 信号发送方从预先设置的第一码本集合 C1 中选择 J个第一矩阵, 记为 W1 , Wj , ... WJ, j=l , J, 从预先设置的第二码本集合 C2中选择一个第二 矩阵 V, 需要发送给信号接收方的信号矩阵为 S , 其中:
s =「 ... s
Wj,i为选择出的第 j个第一矩阵 Wj的第 i个行向量, 第一矩阵 Wj共有 K个行向量, Sj为信号矩阵 S的第 j个列向量, 信号矩阵 S共有 J个列向量。
此时信号发送方通过下述方式对需要发送给信号接收方的信号矩阵 S进行加权处理:
[ wus,
其中, VH为第二矩阵 V的共轭转置矩阵。
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到 ΚχΜ个信号。
第三种处理方式:信号发送方从预先设置的第一码本集合 C1中选择一个第一矩阵 w, 从预先设置的第二码本集合 C2中选择 K个第二矩阵 V,记为 VI , Vi, ...VK, i=l, ... , κ, 需要发送给信号接收方的信号矩阵为 :
Wi为选择出的第一矩阵 W的第 i个行向量,第一矩阵 W共有 K个行向量, Sj为信号 矩阵 S的第 j个列向量, 信号矩阵 S共有 J个列向量。
此时信号发送方通过下述方式对需要发送给信号接收方的信号矩阵 S进行加权处理:
]νΗ
[ w2s, W2S: w2s, ]V2 H
其中, ViH为第 i个第二矩阵 Vi的共轭转置矩阵。
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到 KxM个信号。
第四种处理方式:信号发送方从预先设置的第一码本集合 C1中选择 J个第一矩阵 w, 记为 Wl, Wj, ...WJ, j=l, J, 从预先设置的第二码本集合 C2中选择 K个第二 矩阵 V, 记为 VI, Vi, ...VK, i=l, ..., Κ, 需要发送给信号接收方的信号矩阵为 s, 其中:
Wj,i为选择出的第 j个第一矩阵 Wj的第 i个行向量, 第一矩阵 Wj共有 K个行向量, Sj为信号矩阵 S的第 j个列向量, 信号矩阵 S共有 J个列向量。
此时信号发送方通过下述方式对需要发送给信号接收方的信号矩阵 S进行加权处理:
[ wls2
w. ■■■ V!
W, J, 3J9
FT, ^ 其中, ViH为第 i个第二矩阵 Vi的共轭转置矩阵。
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到 ΚχΜ个信号。
第五种处理方式:信号发送方从预先设置的第一码本集合 C1中选择一个第一矩阵 W, 从预先设置的第二码本集合 C2中选择一个第二矩阵 V, 需要发送给信号接收方的信号矩 阵为 S, 其中:
v = V
15
Vj为选择出的第二矩阵 V的第 j个行向量, 第二矩阵 V共有 M个行向量, 为需要 发送给信号接收方的信号矩阵 S的第 i个列向量的转置, 信号矩阵 S共有 J个列向量。
此时信号发送方通过下述方式对需要发送给信号接收方的信号矩阵 S进行加权处理:
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到 KxM个信号。
第六种处理方式:信号发送方从预先设置的第一码本集合 C1中选择 M个第一矩阵 W, 记为 Wl, ..., Wj, ...WM, j=l, ..., M, 从预先设置的第二码本集合 C2中选择一个第 二矩阵 V, 需要发送给信号接收方的信号矩阵为 S , 其中:
Vj为选择出的第二矩阵 V的第 j个行向量, 第二矩阵 V共有 M个行向量, 为需要 发送给信号接收方的信号矩阵 S的第 i个列向量的转置, 信号矩阵 S共有 J个列向量。
此时信号发送方通过下述方式对需要发送给信号接收方的信号矩阵 S进行加权处理:
其中, VjH为第二矩阵 V的第 j个行向量的共轭转置。
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到 ΚχΜ个信号。
第七种处理方式:信号发送方从预先设置的第一码本集合 C1中选择一个第一矩阵 W, 从预先设置的第二码本集合 C2中选择 I个第二矩阵 V, 记为 VI , Vi , . ..VI, i=l , ... ,
I, 需要发送给信号接收方的信号矩阵为 s, 其中:
κ =
V
Vi,j为选择出的第 i个第二矩阵 Vi的第 j个行向量,第二矩阵 Vi共有 M个行向量, A 为需要发送给信号接收方的信号矩阵 S的第 i个列向量的转置, 信号矩阵 S共有 J个列向 量。
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到 ΚχΜ个信号。
第八种处理方式: 信号发送方从预先设置的第一码本集合 C1中选择 M个第一矩阵, 记为 W1 , Wj , ... WM, j=l , . .. , Μ, 从预先设置的第二码本集合 C2中选择 I个第 二矩阵, 记为 VI, Vi, . VI, i=l , ..., I, 需要发送给信号接收方的信号矩阵为 S, 其中:
Vij为选择出的第 i个第二矩阵 Vi的第 j个行向量,第二矩阵 Vi共有 M个行向量, 为需要发送给信号接收方的信号矩阵 S的第 i个列向量的转置, 信号矩阵 S共有 J个列向 量。
此时信号发送方通过下述方式对需要发送给信号接收方的信号矩阵 S进行加权处理:
通过上述处理方式对需要发送给信号接收方的信号矩阵 S 进行加权处理后能够得到
KxM个信号。
步骤 53 , 将加权处理后得到的各信号发送给所述信号接收方。
信号发送方针对加权处理后得到的 KxM个信号中每个信号, 分别确定该信号对应的 发射天线, 以及在确定出的发射天线包含的天线阵子中确定该信号对应的天线阵子, 并通 过确定出的天线阵子将该信号发送给所述信号接收方。
此外, 本发明实施例三提出, 如果同一个发射天线上的多个天线阵子传输的信号始终 是固定关系, 则可以等效地将这几个天线阵子看做为一个虚拟 /逻辑天线阵子, 因此本发明 实施例三中的天线阵子的数目 K可以为物理天线阵子的数目, 也可以为虚拟 /逻辑天线阵 子的数目 , Κ <κ, 此时依然可以采用上述方案 , 只是用 Κ来代替 κ。
由上述处理过程可知, 本发明实施例技术方案中, 预先针对 3D ΜΙΜΟ系统设置第一 码本集合和第二码本集合, 第一码本集合包含预设的若千个第一矩阵, 第二码本集合包含 预设的若千个第二矩阵, 3D ΜΙΜΟ 系统中的信号发送方需要向信号接收方发送信号时, 从第一码本集合中选择出若千个第一矩阵, 从预先设置的第二码本集合中选择若干个第二 矩阵, 并根据选择出的若干个第一矩阵和若干个第二矩阵, 对需要发送给信号接收方的信 号矩阵进行加权处理,然后将加权处理后得到的各信号发送给所述信号接收方。由上可见, 本发明实施例提出了一种 3D ΜΙΜΟ系统中的信号发送方和信号接收方之间传输信号的具 体实现方案, 可以有效地降低码本反馈的开销, 提高系统性能, 降低系统实现的整体复杂 度。
实施例四
与本发明实施例三提出的 3D ΜΙΜΟ系统中的信号发送方法对应, 本发明实施例四提 出一种 3D MIMO系统中的信号发送装置, 其结构如图 6所示, 包括:
第一矩阵选择单元 61 , 用于在所述信号发送装置需要向信号接收装置发送信号时, 从 预先设置的第一码本集合中选择若干个第一矩阵;
第二矩阵选择单元 62, 用于在所述信号发送装置需要向信号接收装置发送信号时, 从 预先设置的第二码本集合中选择若干个第二矩阵;
加权处理单元 63, 用于根据第一矩阵选择单元 61选择出的第一矩阵以及第二矩阵选 择单元 62选择出的第二矩阵, 对需要发送给信号接收装置的信号流进行加权处理;
信号发送单元 64, 用于将加权处理单元 63进行加权处理后得到的各信号发送给所述 信号接收装置。
较佳地, 所述信号发送装置还包括:
第一矩阵标识接收单元, 用于在第一矩阵选择单元 61 从预先设置的第一码本集合中 选择若干个第一矩阵之前, 接收信号接收方反馈的若干个第一矩阵的矩阵标识;
第一矩阵选择单元 61 ,具体用于根据第一矩阵标识接收单元接收到的若干个第一矩阵
的矩阵标识, 从预先设置的第一码本集合中选择出对应数目个第一矩阵; 第二矩阵标识接收单元, 用于在第二矩阵选择单元 62从预先设置的第二码本集合中 选择若干个第二矩阵之前, 接收信号接收方反馈的若干个第二矩阵的矩阵标识;
第二矩阵选择单元 62,具体用于根据第二矩阵标识接收单元接收到的若干个第二矩阵 的矩阵标识, 从预先设置的第二码本集合中选择出对应数目个第二矩阵。
更佳地, 第一矩阵标识接收单元, 具体用于接收信号接收方针对预设的各子带分别反 馈的若干个第一矩阵的矩阵标识;
第一矩阵选择单元 61 ,具体用于针对需要向信号接收方发送信号的每个 PRB,分别确 定信号接收方针对该 PRB所属子带反馈的若干个第一矩阵的矩阵标识,并根据确定出的第 一矩阵的矩阵标识, 从预先设置的第一码本集合中选择出对应数目个第一矩阵;
第二矩阵标识接收单元, 具体用于接收信号接收方针对预设的各子带分别反馈的若千 个第二矩阵的矩阵标识;
第二矩阵选择单元 62,具体用于针对需要向信号接收方发送信号的每个 PRB,分别确 定信号接收方针对该 PRB所属子带反馈的若干个第二矩阵的矩阵标识,并根据确定出的第 二矩阵的矩阵标识, 从预先设置的第二码本集合中选择出对应数目个第二矩阵;
加权处理单元 63,具体用于针对需要向信号接收方发送信号的每个 PRB,分别根据第 一矩阵选择单元针对该 PRB选择出的第一矩阵和第二矩阵选择单元针对该 PRB选择出的 第二矩阵, 对该 PRB中需要发送给信号接收方的信号矩阵进行加权处理。
较佳地, 信号发送单元, 具体用于针对加权处理单元加权处理后得到的 KxM个信号 中每个信号, 分别确定该信号对应的发射天线, 以及在确定出的发射天线包含的天线阵子 中确定该信号对应的天线阵子, 并通过确定出的天线阵子将该信号发送给所述信号接收 方, K为信号发送方的每个发射天线包含的天线阵子的数目, M为信号发送方的发射天线 的数目。
较佳地, 第一矩阵选择单元 61 , 具体用于从预先设置的第一码本集合中选择一个第一 矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 K, 列数为信 号接收方接收的信号矩阵的行数 I;
第二矩阵选择单元 62, 具体用于从预先设置的第二码本集合中选择一个第二矩阵, 第 二矩阵的行数为信号发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列 数 J;
其中, Wi为选择出的第一矩阵的第 i个行向量;
V为选择出的第二矩阵, VH为第二矩阵 V的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
较佳地, 第一矩阵选择单元 61 , 具体用于从预先设置的第一码本集合中选择 J个第一 矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 κ, 列数为信 号接收方接收的信号矩阵的行数 I;
第二矩阵选择单元 62, 具体用于从预先设置的第二码本集合中选择一个第二矩阵, 第 二矩阵的行数为信号发送方的发射天线的数目 Μ, 列数为信号接收方接收的信号矩阵的列 数 J;
加权处理单元 63通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
其中, Wj,i为选择出的第 j个第一矩阵的第 i个行向量;
V为选择出的第二矩阵, VH为第二矩阵 V的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
较佳地, 第一矩阵选择单元 61 , 具体用于从预先设置的第一码本集合中选择一个第一 矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 K, 列数为信 号接收方接收的信号矩阵的行数 I;
第二矩阵选择单元 62,具体用于从预先设置的第二码本集合中选择 K个第二矩阵,第 二矩阵的行数为信号发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列 数 J;
加权处理单元 63通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
[ wxsx wxs2
[ w2s, W2S2
· · · }v
「 WKSj ]VK 其中, Wi为选择出的第 _— _ _— _一矩阵的第 i个行向量;
Vi为选择出的第 i个第二矩阵, ViH为第 i个第二矩阵 Vi的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
较佳地, 第一矩阵选择单元 61 , 具体,, .2 1用于从预先设置的第一码本集合中选择 J个第一 矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 κ, 列数为信 号接收方接收的信号矩阵的行数 I;
第二矩阵选择单元 62,具体用于从预先设置的第二码本集合中选择 Κ个第二矩阵,第 二矩阵的行数为信号发送方的发射天线的数目 Μ, 列数为信号接收方接收的信号矩阵的列 数 J;
加权处理单元 63通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
Vi为选择出的第 i个第二矩阵, ViH为第 i个第二矩阵 Vi的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
较佳地, 第一矩阵选择单元 61 , 具体用于从预先设置的第一码本集合中选择一个第一 矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 K, 列数为信 号接收方接收的信号矩阵的行数 I;
第二矩阵选择单元 62, 具体用于从预先设置的第二码本集合中选择一个第二矩阵, 第 二矩阵的行数为信号发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列 数 J;
其中, w为选择出的第一矩阵;
为选择出的第二矩阵, VjH为第二矩阵 V的第 j个行向量的共轭转置;
Si为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
较佳地, 第一矩阵选择单元 61 , 具体用于从预先设置的第一码本集合中选择 M个第 一矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 K, 列数为 信号接收方接收的信号矩阵的行数 I;
第二矩阵选择单元 62, 具体用于从预先设置的第二码本集合中选择一个第二矩阵, 第 二矩阵的行数为信号发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列 数 J;
加权处理单元 述方 发送给信号接收方的信 加权处理:
其中, Wj为选择出的第 j个第一矩阵;
^为选择出的第二矩阵, VjH为第二矩阵 V的第 j个行向量的共轭转置;
Si为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
较佳地, 第一矩阵选择单元 61 , 具体用于从预先设置的第一码本集合中选择一个第一 矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 K, 列数为信 号接收方接收的信号矩阵的行数 I;
第二矩阵选择单元 62, 具体用于从预先设置的第二码本集合中选择 I个第二矩阵, 第 二矩阵的行数为信号发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列 数 J;
加权处理单元 63 述方式对需要发送给 接收方 加权处理:
其中, W为选择出的第一矩阵;
Vij为选择出的第 i个第二矩阵的第 j个行向量, Vi H为第 i个第二矩阵的第 j个行向 量的 ^轭转置;
Si为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
较佳地, 第一矩阵选择单元 61, 具体用于从预先设置的第一码本集合中选择 M个第 一矩阵, 第一矩阵的行数为信号发送方的每个发射天线包含的天线阵子的数目 K, 列数为 信号接收方接收的信号矩阵的行数 I;
第一矩阵选择单元 62, 具体用于从预先设置的第二码本集合中选择 I个第二矩阵, 第 二矩阵的行数为信号发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列 数 J;
加权处理单元 63通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
其中, Wj为选择出的第 j个第一矩阵;
Vij为选择出的第 i个第二矩阵的第 j个行向量, VijH为第 i个第二矩阵的第 j个行向 量的 ^轭转置;
Si为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。
Claims
1、一种三维多输入多输出 3D MIMO系统中的码本反馈方法, 其特征在于, 包括: 3D MIMO 系统中的信号接收方从预先设置的第一码本集合中选择若干个第一矩阵, 以及从预先设置的第二码本集合中选择若千个第二矩阵;
将选择出的第一矩阵的矩阵标识和选择出的第二矩阵的矩阵标识发送给信号发送方。
2、如权利要求 1所述的方法, 其特征在于, 第一码本集合中包含若干个第一矩阵子集 合, 每个第一矩阵子集合包含若干个第一矩阵, 每个第一矩阵子集合分别与信号接收方接 收的信号矩阵的行数对应, 第一矩阵子集合中各第一矩阵的行数为信号发送方的每个发射 天线包含的天线阵子的数目, 列数为信号接收方接收的信号矩阵的行数;
信号接收方从预先设置的第一码本集合中选择若千个第一矩阵, 具体包括: 信号接收方根据需要接收的信号矩阵的行数, 在第一码本集合包含的若干个第一矩阵 子集合中, 选取与需要接收的信号矩阵的行数对应的第一矩阵子集合; 并
从选取出的第一矩阵子集合中选择若干个第一矩阵。
3、如权利要求 1所述的方法, 其特征在于, 第二码本集合中包含若干个第二矩阵子集 合, 每个第二矩阵子集合包含若千个第二矩阵, 每个第二矩阵子集合分别与信号接收方接 收的信号矩阵的列数对应, 第二矩阵子集合中各第二矩阵的行数为信号发送方的发射天线 的数目, 列数为信号接收方接收的信号矩阵的列数;
信号接收方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号接收方根据需要接收的信号矩阵的列数, 在第二码本集合包含的若干个第二矩阵 子集合中, 选取与需要接收的信号矩阵的列数对应的第二矩阵子集合; 并
从选取出的第二矩阵子集合中选择若干个第二矩阵。
4、如权利要求 1所述的方法, 其特征在于,信号接收方从预先设置的第一码本集合中 选择若干个第一矩阵,以及从预先设置的第二码本集合中选择若干个第二矩阵,具体包括: 信号接收方针对预设的每个子带, 分别从预先设置的第一码本集合中选择若干个第一 矩阵, 以及从预先设置的第二码本集合中选择若干个第二矩阵;
将选择出的第一矩阵的矩阵标识和选择出的第二矩阵的矩阵标识发送给信号发送方, 具体包括:
信号接收方针对预设的每个子带, 分别将针对该子带选择出的第一矩阵的矩阵标识和 选择出的第二矩阵的矩阵标识发送给信号发送方。
5、如权利要求 1所述的方法, 其特征在于,信号接收方从预先设置的第一码本集合中 选择若干个第一矩阵, 具体包括;
信号接收方从预先设置的第一码本集合中选择一个第一矩阵;
信号接收方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括:
信号接收方从预先设置的第二码本集合中选择一个第二矩阵。
6、如权利要求 1所述的方法, 其特征在于,信号接收方从预先设置的第一码本集合中 选择若干个第一矩阵, 具体包括;
信号接收方从预先设置的第一码本集合中选择 J个第一矩阵, J为信号接收方接收的信 号矩阵的列数;
信号接收方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号接收方从预先设置的第二码本集合中选择一个第二矩阵。
7、如权利要求 1所述的方法, 其特征在于,信号接收方从预先设置的第一码本集合中 选择若干个第一矩阵, 具体包括;
信号接收方从预先设置的第一码本集合中选择一个第一矩阵;
信号接收方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号接收方从预先设置的第二码本集合中选择 K个第二矩阵, K为信号发送方的每个 天线包含的天线阵子的数目。
8、如权利要求 1所述的方法, 其特征在于,信号接收方从预先设置的第一码本集合中 选择若千个第一矩阵, 具体包括;
信号接收方从预先设置的第一码本集合中选择 J个第一矩阵, J为信号接收方接收的信 号矩阵的列数;
信号接收方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号接收方从预先设置的第二码本集合中选择 K个第二矩阵, K为信号发送方的每个 天线包含的天线阵子的数目。
9、如权利要求 1所述的方法, 其特征在于,信号接收方从预先设置的第一码本集合中 选择若干个第一矩阵, 具体包括;
信号接收方从预先设置的第一码本集合中选择 M个第一矩阵, M为信号发送方的发射 天线的数目;
信号接收方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号接收方从预先设置的第二码本集合中选择一个第二矩阵。
10、 如权利要求 1所述的方法, 其特征在于, 信号接收方从预先设置的第一码本集合 中选择若千个第一矩阵, 具体包括;
信号接收方从预先设置的第一码本集合中选择一个第一矩阵;
信号接收方从预先设置的第二码本集合中选择若千个第二矩阵, 具体包括: 信号接收方从预先设置的第二码本集合中选择 I个第二矩阵, I为信号接收方接收的信 号矩阵的行数。
11、 如权利要求 1所述的方法, 其特征在于, 信号接收方从预先设置的第一码本集合
中选择若千个第一矩阵, 具体包括;
信号接收方从预先设置的第一码本集合中选择 M个第一矩阵, M为信号发送方的发射 天线的数目;
信号接收方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号接收方从预先设置的第二码本集合中选择 I个第二矩阵, I为信号接收方接收的信 号矩阵的行数。
12、一种三维多输入多输出 3D MIMO系统中的信号接收装置, 其特征在于, 包括: 第一矩阵选择单元, 用于从预先设置的第一码本集合中选择若干个第一矩阵; 第二矩阵选择单元, 用于从预先设置的第二码本集合中选择若干个第二矩阵; 发送单元, 用于将第一矩阵选择单元选择出的第一矩阵的矩阵标识和第二矩阵选择单 元选择出的第二矩阵的矩阵标识发送给信号发送装置。
13、如权利要求 12所述的信号接收装置, 其特征在于, 第一码本集合中包含若千个第 一矩阵子集合, 每个第一矩阵子集合包含若干个第一矩阵, 每个第一矩阵子集合分别与信 号接收方接收的信号矩阵的行数对应, 第一矩阵子集合中各第一矩阵的行数为信号发送方 的每个发射天线包含的天线阵子的数目, 列数为信号接收方接收的信号矩阵的行数; 第一矩阵选择单元具体包括:
第一矩阵子集合选取子单元,用于根据所述信号接收装置需要接收的信号矩阵的行数, 在第一码本集合包含的若干个第一矩阵子集合中, 选取与需要接收的信号矩阵的行数对应 的第一矩阵子集合;
第一矩阵选择子单元, 用于从第一矩阵子集合选取子单元选取出的第一矩阵子集合中 选择若干个第一矩阵。
14、如权利要求 12所述的信号接收装置, 其特征在于, 第二码本集合中包含若千个第 二矩阵子集合, 每个第二矩阵子集合包含若干个第二矩阵, 每个第二矩阵子集合分别与信 号接收方接收的信号矩阵的列数对应, 第二矩阵子集合中各第二矩阵的行数为信号发送方 的发射天线的数目, 列数为信号接收方接收的信号矩阵的列数;
第二矩阵选择单元, 具体包括:
第二矩阵子集合选取子单元,用于根据所述信号接收装置需要接收的信号矩阵的列数, 在第二码本集合包含的若干个第二矩阵子集合中, 选取与需要接收的信号矩阵的列数对应 的第二矩阵子集合;
第二矩阵选择子单元, 用于从第二矩阵子集合选取子单元选取出的第二矩阵子集合中 选择若干个第二矩阵。
15、如权利要求 12所述的信号接收装置, 其特征在于, 第一矩阵选择单元, 具体用于 针对预设的每个子带, 分别从预先设置的第一码本集合中选择若千个第一矩阵;
第二矩阵选择单元, 具体用于针对预设的每个子带, 分别从预先设置的第二码本集合 中选择若千个第二矩阵;
发送单元, 具体用于针对预设的每个子带, 分别将第一矩阵选择单元针对该子带选择 出的第一矩阵的矩阵标识和第二矩阵选择单元针对该子带选择出的第二矩阵的矩阵标识 发送给信号发送方。
16、 一种三维多输入多输出 3D MIMO系统中的信号发送方法, 其特征在于, 包括: 3D MIMO 系统中的信号发送方需要向信号接收方发送信号时, 从预先设置的第一码 本集合中选择若干个第一矩阵, 从预先设置的第二码本集合中选择若千个第二矩阵; 根据选择出的若干个第一矩阵和若干个第二矩阵, 对需要发送给信号接收方的信号矩 阵进行加权处理; 并
将加权处理后得到的各信号发送给所述信号接收方。
17、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合 中选择若千个第一矩阵之前, 还包括:
信号发送方接收信号接收方反馈的若干个第一矩阵的矩阵标识;
信号发送方从预先设置的第一码本集合中选择若千个第一矩阵, 具体包括: 根据接收到的若干个第一矩阵的矩阵标识, 从预先设置的第一码本集合中选择出对应 数目个第一矩阵;
信号发送方从预先设置的第二码本集合中选择若干个第二矩阵之前, 还包括: 信号发送方接收信号接收方反馈的若干个第二矩阵的矩阵标识;
信号发送方从预先设置的第二码本集合中选择若千个第二矩阵, 具体包括: 根据接收到的若干个第二矩阵的矩阵标识, 从预先设置的第二码本集合中选择出对应 数目个第二矩阵。
18、如权利要求 17所述的方法, 其特征在于,信号发送方接收信号接收方反馈的若千 个第一矩阵的矩阵标识, 具体包括:
信号发送方接收信号接收方针对预设的各子带分别反馈的若干个第一矩阵的矩阵标 识;
根据接收到的若干个第一矩阵的矩阵标识, 从预先设置的第一码本集合中选择出对应 数目个第一矩阵, 具体包括:
信号发送方针对需要向信号接收方发送信号的每个物理资源块 PRB , 分别确定信号接 收方针对该 PRB所属子带反馈的若千个第一矩阵的矩阵标识,并才艮据确定出的第一矩阵的 矩阵标识, 从预先设置的第一码本集合中选择出对应数目个第一矩阵;
信号发送方接收信号接收方反馈的若干个第二矩阵的矩阵标识, 具体包括: 信号发送方接收信号接收方针对预设的各子带分别反馈的若干个第二矩阵的矩阵标
识;
根据接收到的若干个第二矩阵的矩阵标识, 从预先设置的第二码本集合中选择出对应 数目个第二矩阵, 具体包括:
信号发送方针对需要向信号接收方发送信号的每个 PRB , 分别确定信号接收方针对该 PRB所属子带反馈的若千个第二矩阵的矩阵标识, 并根据确定出的第二矩阵的矩阵标识, 从预先设置的第二码本集合中选择出对应数目个第二矩阵;
根据选择出的若干个第一矩阵和若干个第二矩阵, 对需要发送给信号接收方的信号矩 阵进行加权处理, 具体包括:
信号发送方针对需要向信号接收方发送信号的每个 PRB ,分别根据针对该 PRB选择出 的第一矩阵和第二矩阵, 对该 PRB中需要发送给信号接收方的信号矩阵进行加权处理。
19、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合 中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择一个第一矩阵, 第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择一个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
" [ w,s, WXS2 . . . W,Sj ] VW '
[ W2SX W2S2 … W2S, ] VH wisi …
[ WKS, WKS2 … VKSj ] VH
L 25」
其中, Wi为选择出的第一矩阵的第 i个行向量;
V为选择出的第二矩阵, VH为第二矩阵 V的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
20、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合 中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择 J个第一矩阵, 第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择一个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
其中, Wj,i为选择出的第 j个第一矩阵的第 i个行向量;
V为选择出的第二矩阵, VH为第二矩阵 V的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
21、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合 中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择一个第一矩阵, 第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择 K个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
其中, Wi为选择出的第一矩阵的第 i个行向量
Vi为选择出的第 i个第二矩阵, ViH为第 i个第二矩阵 Vi的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
22、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合 中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择 J个第一矩阵, 第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择 K个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
[ wusx w2,s w. ]vK
其中, Wj,i为选择出的第 j个第一矩阵的第 i个行向量;
Vi为选择出的第 i个第二矩阵, ViH为第 i个第二矩阵 Vi的共轭转置矩阵;
Sj为需要发送给信号接收方的信号矩阵的第 j个列向量。
23、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合 中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择一个第一矩阵, 第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择一个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式 给信号接收方的信号矩阵进行加
其中, w为选择出的第一矩阵;
为选择出的第二矩阵, VjH为第二矩阵 V的第 j个行向量的共轭转置;
Si为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
24、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合
中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择 M个第一矩阵,第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若千个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择一个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式对需要发送给信 的信号矩阵进行加权处
其中, Wj为选择出的第 j个第一矩阵;
为选择出的第二矩阵, VjH为第二矩阵 V的第 j个行向量的共轭转置;
为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
25、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合 中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择一个第一矩阵, 第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若干个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择 I个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式对 方的信 矩阵进行加权处理:
其中, W为选择出的第一矩阵;
Vij为选择出的第 i个第二矩阵的第 j个行向量, VijH为第 i个第二矩阵的第 j个行向 量的 ^轭转置;
Si为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
26、如权利要求 16所述的方法, 其特征在于,信号发送方从预先设置的第一码本集合
中选择若千个第一矩阵, 具体包括:
信号发送方从预先设置的第一码本集合中选择 M个第一矩阵,第一矩阵的行数为信号 发送方的每个发射天线包含的天线阵子的数目 K, 列数为信号接收方接收的信号矩阵的行 数 I;
信号发送方从预先设置的第二码本集合中选择若千个第二矩阵, 具体包括: 信号发送方从预先设置的第二码本集合中选择 I个第二矩阵, 第二矩阵的行数为信号 发送方的发射天线的数目 M, 列数为信号接收方接收的信号矩阵的列数 J;
通过下述方式对需要发送给信号接收方的信号矩阵进行加权处理:
其中, Wj为选择出的第 j个第一矩阵;
Vij为选择出的第 i个第二矩阵的第 j个行向量, VijH为第 i个第二矩阵的第 j个行向 量的 ^轭转置;
为需要发送给信号接收方的信号矩阵的第 i个列向量的转置。
27、如权利要求 16所述的方法, 其特征在于, 将加权处理后得到的各信号发送给所述 信号接收方, 具体包括:
针对加权处理后得到的 KxM个信号中每个信号, 分别确定该信号对应的发射天线, 以及在确定出的发射天线包含的天线阵子中确定该信号对应的天线阵子, 并通过确定出的 天线阵子将该信号发送给所述信号接收方, K为信号发送方的每个发射天线包含的天线阵 子的数目, M为信号发送方的发射天线的数目。
28、一种三维多输入多输出 3D MIMO系统中的信号发送装置, 其特征在于, 包括: 第一矩阵选择单元, 用于在所述信号发送装置需要向信号接收装置发送信号时, 从预 先设置的第一码本集合中选择若干个第一矩阵;
第二矩阵选择单元, 用于在所述信号发送装置需要向信号接收装置发送信号时, 从预 先设置的第二码本集合中选择若千个第二矩阵;
加权处理单元, 用于根据第一矩阵选择单元选择出的第一矩阵以及第二矩阵选择单元 选择出的第二矩阵, 对需要发送给信号接收装置的信号流进行加权处理;
信号发送单元, 用于将加权处理单元进行加权处理后得到的各信号发送给所述信号接 收装置。
29、 如权利要求 28所述的信号发送装置, 其特征在于, 还包括:
第一矩阵标识接收单元, 用于在第一矩阵选择单元从预先设置的第一码本集合中选择
若干个第一矩阵之前, 接收信号接收方反馈的若干个第一矩阵的矩阵标识; 第一矩阵选择单元, 具体用于根据第一矩阵标识接收单元接收到的若干个第一矩阵的 矩阵标识, 从预先设置的第一码本集合中选择出对应数目个第一矩阵;
第二矩阵标识接收单元, 用于在第二矩阵选择单元从预先设置的第二码本集合中选择 若千个第二矩阵之前, 接收信号接收方反馈的若千个第二矩阵的矩阵标识;
第二矩阵选择单元, 具体用于根据第二矩阵标识接收单元接收到的若干个第二矩阵的 矩阵标识, 从预先设置的第二码本集合中选择出对应数目个第二矩阵。
30、如权利要求 29所述的信号发送装置, 其特征在于, 第一矩阵标识接收单元, 具体 用于接收信号接收方针对预设的各子带分别反馈的若干个第一矩阵的矩阵标识;
第一矩阵选择单元,具体用于针对需要向信号接收方发送信号的每个物理资源块 PRB, 分别确定信号接收方针对该 PRB所属子带反馈的若干个第一矩阵的矩阵标识,并根据确定 出的第一矩阵的矩阵标识, 从预先设置的第一码本集合中选择出对应数目个第一矩阵; 第二矩阵标识接收单元, 具体用于接收信号接收方针对预设的各子带分别反馈的若干 个第二矩阵的矩阵标识;
第二矩阵选择单元, 具体用于针对需要向信号接收方发送信号的每个 PRB, 分别确定 信号接收方针对该 PRB所属子带反馈的若干个第二矩阵的矩阵标识,并才 据确定出的第二 矩阵的矩阵标识, 从预先设置的第二码本集合中选择出对应数目个第二矩阵;
加权处理单元, 具体用于针对需要向信号接收方发送信号的每个 PRB, 分别根据第一 矩阵选择单元针对该 PRB选择出的第一矩阵和第二矩阵选择单元针对该 PRB选择出的第 二矩阵, 对该 PRB中需要发送给信号接收方的信号矩阵进行加权处理。
31、如权利要求 28所述的信号发送装置, 其特征在于,信号发送单元, 具体用于针对 加权处理单元加权处理后得到的 KxM个信号中每个信号, 分别确定该信号对应的发射天 线, 以及在确定出的发射天线包含的天线阵子中确定该信号对应的天线阵子, 并通过确定 出的天线阵子将该信号发送给所述信号接收方, K为信号发送方的每个发射天线包含的天 线阵子的数目, M为信号发送方的发射天线的数目。
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