CN102122983A - Method and equipment for generating codebook and sending and feeding back information - Google Patents

Method and equipment for generating codebook and sending and feeding back information Download PDF

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Publication number
CN102122983A
CN102122983A CN2011100972137A CN201110097213A CN102122983A CN 102122983 A CN102122983 A CN 102122983A CN 2011100972137 A CN2011100972137 A CN 2011100972137A CN 201110097213 A CN201110097213 A CN 201110097213A CN 102122983 A CN102122983 A CN 102122983A
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China
Prior art keywords
code book
rank
clock
dimension
amp
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CN2011100972137A
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Chinese (zh)
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CN102122983B (en
Inventor
张然然
高秋彬
苏昕
荆梅芳
骆纯
拉盖施
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电信科学技术研究院
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; Arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks ; Receiver end arrangements for processing baseband signals
    • H04L25/03891Spatial equalizers
    • H04L25/03949Spatial equalizers equalizer selection or adaptation based on feedback
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0482Adaptive codebooks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636Feedback format
    • H04B7/0639Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0469Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account

Abstract

The invention discloses a method and equipment for generating a codebook and sending and feeding back information. The method for sending the information comprises the following steps: after the codebook is generated, receiving signals containing codebook index information and extracting the codebook index information; according to the codebook index information, selecting corresponding precoding matrixes from the codebook or subsets of the codebook; precoding data to be sent according to the precoding matrixes; and sending the precoded signals to a receiving end. The method of feeding back channel status information comprises the following steps: receiving information sent by a sending end; estimating channel information on the basis of the received information; selecting the corresponding precoding matrixes from the codebook or the subsets of the codebook according to the channel information,; and sending signals containing codebook index information corresponding to the selected precoding matrixes. By the invention, dual-precoding matrix index feedback can be supported, the quantization accuracy of small-interval dual-polarization array channels can be improved, and the quantization accuracy of small-interval linear array channels can be enhanced.

Description

A kind of generation of code book, the transmission of information, feedback method and equipment

Technical field

The present invention relates to wireless communication technology, particularly the transmission of the generation of code book, information, feedback method and equipment.

Background technology

At present, the multi-antenna technology of physical layer has become one of key technology of next generation wireless communication system.Multi-antenna technology has lot of advantages, improve the throughput of system such as the spatial multiplexing gain that can utilize many antennas, also can utilize the diversity gain of many antennas to improve systematic function, perhaps utilize the directive gain of antenna to distinguish receiving terminal and eliminate interference between receiving terminal or the like.

MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) system uses a plurality of emissions, reception antenna, utilize signal sky, the time, frequency-domain combined processing obtains speed, diversity and array gain.In the mimo system, if transmitter can be known channel information in some way, just can be optimized sending signal, to improve the quality of reception and reduction requirement to the receiver complexity according to the characteristic of channel.The general feedback system that adopts quantized channel information in real system is to reduce feedback overhead and feedback delay.The quantification of channel information can also can be the pretreatment parameter that receiver is recommended use at channel matrix and statistic thereof.Channel information is mapped in the set of limited element formation through after quantizing, and this set is called as code book.

In the closed-loop MIMO system based on code book, code book is the key that influences systematic function.At Rel-8LTE (Long Term Evolution, Long Term Evolution) transmission mode 4,5,6 has all adopted PMI (Precoding Matrix Indicator, pre-coding matrix index) feedback mechanism, be UE (User Equipment, subscriber equipment) according to the public guide frequency measured channel, and the code word label information that reports it recommend to use to base station eNB.For example, the public guide frequency port is 4 o'clock, adopts the code book based on the Householder conversion, is every kind of transfer of data number of plies of transmission mode 4 for the Closed-Loop Spatial Multiplexing pattern, all exists 16 optional pre-coding matrixes.

In the transmission mode 9 of Rel-10 LTE-A (LTE-Advanced, Long Term Evolution strengthens), in order to improve quantified precision, at CSI-RS (Channel State Information-Reference Signal to channel, channel state information reference signals) port is 8 o'clock, adopts the code book of supporting two PMI feedbacks, and the various transfer of data numbers of plies for transmission mode 9 have 16 respectively, 16,4,4,4,4,4, a kind of the one PMI value is optional and 16,16,16,8,1,1,1, a kind of the 2nd PMI value is optional.

Table 1 is: be used for port 0,1,2,4 antenna codebooks of 3}

Wherein, Wherein I is 4 * 4 dimension unit matrix, { the l of representing matrix 1, l 2... row.

Table 2 is: port one 5~22 one deck channel condition informations report 8 antenna codebooks of usefulness

Table 3 is: port one 5~22 2 layer channel condition information reports 8 antenna codebooks of usefulness

Table 4 is: port one 5~22 3 layer channel condition information reports 8 antenna codebooks of usefulness

Table 5 is: 5~22 layers of channel condition information of port one report 8 antenna codebooks of usefulness

Table 6 is: port one 5~22 5 layer channel condition information reports 8 antenna codebooks of usefulness

Table 7 is: port one 5~22 6 layer channel condition information reports 8 antenna codebooks of usefulness

Table 8 is: port one 5~22 7 layer channel condition information reports 8 antenna codebooks of usefulness

Table 9 is: port one 5~22 8 layer channel condition information reports 8 antenna codebooks of usefulness

Wherein, v m=[1 ej2 π m/32 ej4 π m/32 ej6 π m/32] T

In order further to improve power system capacity, in Rel-11, may further improve multiuser MIMO, and may introduce the multicast communication technology.No matter be multiuser MIMO or multicast communication technology, its requirement to the channel quantitative precision is all transmitted far above Single User MIMO.The deficiencies in the prior art are: be that 4 antenna codebooks based on the Householder conversion that main optimization scene designs can't satisfy the demand of these advanced transmission technologys to the channel quantitative precision with the Single User MIMO.

In addition, 4 antenna codebooks based on the Householder conversion design at the low associated scenario of little spacing linear array scene and space, space channel quantified precision for little spacing dual polarization battle array scene commonly used is not high, and do not support two PMI feedbacks (in two PMI feedbacks, a PMI perseverance wherein is 0).

Summary of the invention

Technical problem solved by the invention has been to provide a kind of generation of code book, transmission, feedback method and the equipment of information, in order to improve the channel quantitative precision.

A kind of generation method of code book is provided in the embodiment of the invention, has comprised the steps:

Determine to generate the code book desired parameters;

It is as follows to generate code book according to the parameter of determining:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock,

Or,

Or,

Or,

Rank is 4 o'clock,

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer,

A kind of generation method of code book is provided in the embodiment of the invention, has comprised the steps:

Determine to generate the code book desired parameters;

It is as follows to generate code book according to the parameter of determining:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock:

Or,

Or,

Or,

Rank is 4 o'clock:

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer, Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.

A kind of method for sending information is provided in the embodiment of the invention, has may further comprise the steps:

Reception comprises the signal of code book index information, extracts code book index information;

According to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix;

Carry out precoding according to pre-coding matrix to sent data;

Signal after the precoding is sent to receiving terminal.

A kind of channel state information feedback method is provided in the embodiment of the invention, has may further comprise the steps:

The information that receiving end/sending end sends;

Based on the information estimating channel information that receives;

According to channel information, from the subclass of code book or code book, select corresponding pre-coding matrix;

Transmission comprises the signal of the pairing code book index information of selected pre-coding matrix.

A kind of generation equipment of code book is provided in the embodiment of the invention, has comprised:

Determination module is used for determining to generate the code book desired parameters;

Generation module, it is as follows to be used for generating code book according to the parameter of determining:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock,

Or,

Or,

Or,

Rank is 4 o'clock,

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer,

A kind of generation equipment of code book is provided in the embodiment of the invention, has comprised:

Determination module is used for determining to generate the code book desired parameters;

Generation module, it is as follows to be used for generating code book according to the parameter of determining:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock:

Or,

Or,

Or,

Rank is 4 o'clock:

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer, Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.

A kind of information transmitting apparatus is provided in the embodiment of the invention, has comprised:

Receiver module is used to receive the signal that comprises code book index information, extracts code book index information;

Select module, be used for from code book, selecting corresponding pre-coding matrix according to code book index information;

Precoding module is used for carrying out precoding according to pre-coding matrix to sent data;

Sending module is used for the signal after the precoding is sent to receiving terminal.

A kind of channel condition information feedback device is provided in the embodiment of the invention, has comprised:

Receiver module is used for the information that receiving end/sending end sends;

Estimation module is used for based on the information estimating channel information that receives;

Select module, be used for, from the subclass of code book or code book, select corresponding pre-coding matrix according to channel information;

Sending module is used to send the signal that comprises the pairing code book index information of selected pre-coding matrix.

Beneficial effect of the present invention is as follows:

As seen from the above-described embodiment, the technical scheme that provides of the embodiment of the invention can be supported two PMI feedbacks; And can improve little spacing dual polarization battle array channel quantitative precision, improve little spacing linear array channel quantitative precision simultaneously; Further, adopt uniform way, reduce change standard with the design of Rel-108 antenna codebook.

Description of drawings

Fig. 1 is a method for sending information implementing procedure schematic diagram in the embodiment of the invention;

Fig. 2 is a channel state information feedback method implementing procedure schematic diagram in the embodiment of the invention;

Fig. 3 is generation equipment one structural representation of code book in the embodiment of the invention;

Fig. 4 is generation equipment two structural representations of code book in the embodiment of the invention;

Fig. 5 is a code book memory device structural representation in the embodiment of the invention;

Fig. 6 is for having stored the storage medium structural representation of code book in the embodiment of the invention;

Fig. 7 is an information transmitting apparatus structural representation in the embodiment of the invention;

Fig. 8 is channel state information feedback device structural representation in the letter embodiment of the invention.

Embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.

Fig. 1 is a method for sending information implementing procedure schematic diagram, as shown in the figure, can comprise may further comprise the steps in process of transmitting:

The signal that step 101, reception comprise code book index information extracts code book index information;

Step 102, according to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix;

Step 103, carry out precoding to sent data according to pre-coding matrix;

Step 104, the signal after the precoding is sent to receiving terminal.

In the enforcement of process of transmitting, at first in step 101, receive the signal that comprises code book index information, extract code book index information.Particularly, in order to understand channel conditions, transmitting terminal receives the information such as CQI (Channel Quality Indicator, channel quality indication), Rank (order) selection and code book index information that the remote receiver feedback is come.These CQI, Rank select and code book index information will be used for follow-up transmission and processing process.

Then in step 102 according to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix.

In this step, can also carry out conversion process based on selected pre-coding matrix and obtain further pre-coding matrix, as ZF processing etc., can certainly be directly with selected pre-coding matrix directly as final pre-coding matrix.

In step 103, carry out precoding to sent data again according to pre-coding matrix.

At last in step 104, the signal after the precoding is sent to receiving terminal.

Fig. 2 is a channel state information feedback method implementing procedure schematic diagram, as shown in the figure, can may further comprise the steps in feedback procedure:

The information that step 201, receiving end/sending end send;

Step 202, based on the information estimating channel information that receives;

Step 203, according to channel information, from the subclass of code book or code book, select corresponding pre-coding matrix;

Step 204, transmission comprise the signal of the pairing code book index information of selected pre-coding matrix.

In the implementation process of channel condition information feedback, the information that sends of receiving end/sending end at first; Then according to the signal estimating channel information that receives; According to channel information, from the subclass of code book or code book, select pre-coding matrix again; Send the signal of the code book index information that comprises selected pre-coding matrix at last.

Execution mode to code book related in step 102, the step 203 describes below.

The execution mode of concrete generation code book can have two kinds, and a kind of is not have the code book under the angle situation of change to generate, and a kind of is to have the code book under the angle situation of change to generate.The angle variation refers in the change procedure of second code book index, except changing preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas can also change the beam direction of antenna array signal transmitted; There is not the variation of expression second code book index of angle variation only to change preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas, the variation that does not bring the beam direction of antenna array signal transmitted.Describe respectively below.

One, non-angular changes.

In the generative process of code book, at first determine to generate the code book desired parameters; It is as follows to generate code book according to the parameter of determining then:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock,

Or,

Or,

Or,

Rank is 4 o'clock,

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,

Particularly, Can change preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas, 2N is The number of possible value, V mTake from N T* 1 dimension M-DFT vector set, this M DFT vector can form the wave beam of M different directions, and whole amount of space is changed into M direction, v mBe V mPreceding N T/ 2 row are used for N T/ 2 signals that antenna sent carry out figuration, α mBe in order to allow Can form a N T* 1 dimension M-DFT vector and definition.It for Rank 2 o'clock pre-coding matrix K ≠ 0 o'clock can make two data flow form the wave beam of different directions, and the value that k is different can change two angles between the data flow beam direction.For Rank is 3 and 4 o'clock pre-coding matrix, as Or Formed 3 or 4 data flow form the wave beam of 2 different directions, and the data flow of same beam direction is by preceding N T/ 2 and N TThe orthogonality of signal transmitted phase place is distinguished the employed DFT vector of the data flow of different beams direction on/2 back root antennas With Mutually orthogonal.

Be specifically described below:

1, works as V mBe N T* 1 dimension 16-DFT (Discrete Fourier Transform, discrete Fourier transform (DFT)) vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for 16-PSK (Phase Shift Keying, phase shift keying) element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

2, work as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 8-PSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

Compare with the Rel-104 antenna codebook, this programme can reduce feedback overhead.Such as channel width is 10MHz, use 600 subcarriers totally 50 Resource Block (Resource Block altogether, RB) carry out transfer of data, 1 subband PMI of per 6 subcarriers feedback, totally 9 subbands, adopt existing 4 antenna codebooks, realize that then a subband PMI feedback needs 4 * 9=36 bit altogether, and when adopting above-mentioned code book, the all channel bandwidth is fed back 4 bits the one PMI, each subband feeds back 3 bits the 2nd PMI, then needs 3 * 9+4=31 bit can realize subband PMI feedback altogether, thereby can reduce by 5 bit feedback expenses.

3, work as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for Q-PSK (Quadrature Phase Shift Keying, quarternary phase-shift keying (QPSK)) element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

Or,

Described code book is 3 o'clock at Rank,

Or,

Or,

Or,

Described code book is 4 o'clock at Rank,

Or,

Compare with the Rel-104 antenna codebook, this programme can reduce feedback overhead.As channel width is 10MHz, use 600 subcarriers totally 50 Resource Block (Resource Block altogether, RB) carry out transfer of data, 1 subband PMI of per 6 subcarriers feedback, totally 9 subbands, then above-mentioned code book realizes that subband PMI feedback only needs 2 * 9+4=22 bit, and the Rel-104 antenna codebook needs 4 * 9=36 bit feedback information.

4, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, For

During the 16-PSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

5, work as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the 16-PSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

6, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

7, work as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

Two, there is angle to change.

In the generative process of code book, at first determine to generate the code book desired parameters; It is as follows to generate code book according to the parameter of determining then:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock:

Or,

Or,

Or,

Rank is 4 o'clock:

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer, Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.

Particularly, Can change preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas, 2N is The number of possible value, V mTake from N T* 1 dimension M-DFT vector set, this M DFT vector can form the wave beam of M different directions, and whole amount of space is changed into M direction, v mBe V mPreceding N T/ 2 row are used for N T/ 2 signals that antenna sent carry out figuration, α mBe in order to allow Can form a N T* 1 dimension M-DFT vector and definition.For each Rank code book, P 1Optional DFT vector (corresponding to the wave beam of different directions) is divided into P 1Group, every group comprises K different beam direction, the fine setting of beam direction in the variation by the k value can realize on the same group, and P 2The granularity of beam direction is passed through i between expression group and the group 1The variation of value can realize the adjustment in a big way of beam direction.It for Rank 2 o'clock pre-coding matrix K ' ≠ k " time can make two data flow form the wave beam of different directions, (k ', the value that k ") is different can change two angles between the data flow beam direction.For Rank be 3 and 4 o'clock pre-coding matrix formed 3 or 4 data flow form the wave beam of 2 different directions, the data flow of same beam direction is by preceding N T/ 2 and N TThe orthogonality of signal transmitted phase place is distinguished the employed DFT vector of the data flow of different beams direction on/2 back root antennas With Mutually orthogonal.

Be specifically described below:

1, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:

Or,

Described code book is 3 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:

Or,

Or,

Described code book is 4 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:

Or

Compare with 3 scheme, Rank 3 in this programme and Rank 4 code books can improve the signal to noise ratio balance of the two-layer data flow in the same code word, thereby improve transmission performance.

2, work as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the QPSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3,

(k′,k″)∈{(0,1),(1,2),(0,3),(1,3)}:

3, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element, also promptly:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:

4, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=4, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:

In the enforcement, at above-mentioned code book, the present invention also provides a kind of storage means of code book, can comprise:

At first determine code book, this code book also is each code book that above-mentioned generation method is generated; Store code book then.

Based on same inventive concept, also provide code book to generate equipment, information transmitting apparatus, channel condition information feedback device, memory device, storage medium in the embodiment of the invention, because these equipment principle of dealing with problems and method for generating codebooks, method for sending information, channel state information feedback method, storage means are similar, therefore the enforcement of these equipment can repeat part and repeat no more referring to the enforcement of method.

Fig. 3 is generation equipment one structural representation of code book, as shown in the figure, can comprise in generation equipment:

Determination module 301 is used for determining to generate the code book desired parameters;

Generation module 302, it is as follows to be used for generating code book according to the parameter of determining:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock,

Or,

Or,

Or Rank is 4 o'clock,

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer, In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 16-PSK element:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 8-PSK element:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the Q-PSK element:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

Or,

Described code book is 3 o'clock at Rank,

Or,

Or,

Or,

Described code book is 4 o'clock at Rank,

Or,

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the 16-PSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the 16-PSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank:

Or,

Described code book is 2 o'clock at Rank, k=1:

Fig. 4 is generation equipment two structural representations of code book, as shown in the figure, can comprise in generation equipment:

Determination module 401 is used for determining to generate the code book desired parameters;

Generation module 402, it is as follows to be used for generating code book according to the parameter of determining:

Rank is 1 o'clock:

Or,

Rank is 2 o'clock:

Or,

Or,

Rank is 3 o'clock:

Or,

Or,

Or,

Rank is 4 o'clock:

Or,

Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;

i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer, Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32 ,

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:

Or,

Described code book is 3 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:

Or,

Or,

Described code book is 4 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:

Or

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the QPSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16 ,

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64 ,

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:

In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element:

V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64 ,

v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M

Described code book is 1 o'clock at Rank, P 1=P 2=4, k=0,1,2,3:

Or,

Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:

Fig. 5 is a code book memory device structural representation, as shown in the figure, can comprise in the memory device:

Codebook determining module 501 is used for determining code book, and described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates;

Code book memory module 502 is used to store code book.

Fig. 6 is a storage medium structural representation of having stored code book, as shown in the figure, stores code book on storage medium, and described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates.

Those skilled in the art should understand that code book specific embodiment of the present invention can be provided as method, system or computer program.Therefore, code book of the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect in the specific implementation.And code book of the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.

Code book in the invention process can offer these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce the device of the function that is used for the code book appointment.

These realize that the computer program instructions of code book function also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of code book in an embodiment.

These computer program instructions of realizing the code book function also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for realizing the function of code book among the embodiment.

Fig. 7 is the information transmitting apparatus structural representation, as shown in the figure, can comprise in transmitting apparatus:

Receiver module 701 is used to receive the signal that comprises code book index information, extracts code book index information;

Select module 702, be used for according to code book index information, select corresponding pre-coding matrix from the subclass of code book or code book, described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates;

Precoding module 703 is used for carrying out precoding according to pre-coding matrix to sent data;

Sending module 704 is used for the signal after the precoding is sent to receiving terminal.

Fig. 8 is a channel condition information feedback device structural representation, as shown in the figure, can comprise:

Receiver module 801 is used for the information that receiving end/sending end sends;

Estimation module 802 is used for based on the information estimating channel information that receives;

Select module 803, be used for according to channel information, select corresponding pre-coding matrix from the subclass of code book or code book, described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates;

Sending module 804 is used to send the signal that comprises the pairing code book index information of selected pre-coding matrix.

For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when enforcement is of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.

As seen from the above-described embodiment, the technical scheme that provides of the embodiment of the invention can be supported two PMI feedbacks; And can improve little spacing dual polarization battle array channel quantitative precision, improve little spacing linear array channel quantitative precision simultaneously; Further, adopt uniform way, reduce change standard with the design of Rel-108 antenna codebook.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.For example: change corresponding relation, the pre-coding matrix between the code book index and pre-coding matrix in the code book and be listed as exchange or code book is carried out the code book compression and obtain codebook subset and code book after handling such as close still in protection range.

Claims (30)

1. the generation method of a code book is characterized in that, comprises the steps:
Determine to generate the code book desired parameters;
It is as follows to generate code book according to the parameter of determining:
Rank is 1 o'clock:
Or,
Rank is 2 o'clock:
Or,
Or,
Rank is 3 o'clock,
Or,
Or,
Or,
Rank is 4 o'clock,
Or,
Wherein,
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
2. Or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 16-PSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
3. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 8-PSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
4. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the Q-PSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
Or,
Described code book is 3 o'clock at Rank,
Or,
Or,
Or,
Described code book is 4 o'clock at Rank,
Or,
5. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the 16-PSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
6. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the 16-PSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
7. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
8. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
9. the generation method of a code book is characterized in that, comprises the steps:
Determine to generate the code book desired parameters;
It is as follows to generate code book according to the parameter of determining:
Rank is 1 o'clock:
Or,
Rank is 2 o'clock:
Or,
Or,
Rank is 3 o'clock:
Or,
Or,
Or,
Rank is 4 o'clock:
Or,
Wherein,
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer, Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.
10. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Or,
Described code book is 3 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:
Or,
Or,
Described code book is 4 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:
Or
11. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
12. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
13. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
14. a method for sending information is characterized in that, may further comprise the steps:
Reception comprises the signal of code book index information, extracts code book index information;
According to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix, described code book is the arbitrary described code book of claim 1 to 13;
Carry out precoding according to pre-coding matrix to sent data;
Signal after the precoding is sent to receiving terminal.
15. a channel state information feedback method is characterized in that, may further comprise the steps:
The information that receiving end/sending end sends;
Based on the information estimating channel information that receives;
According to channel information, from the subclass of code book or code book, select corresponding pre-coding matrix, described code book is the arbitrary described code book of claim 1 to 13;
Transmission comprises the signal of the pairing code book index information of selected pre-coding matrix.
16. the generation equipment of a code book is characterized in that, comprising:
Determination module is used for determining to generate the code book desired parameters;
Generation module, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Or,
Rank is 2 o'clock:
Or,
Or,
Rank is 3 o'clock,
Or,
Or,
Or,
Rank is 4 o'clock,
Or,
Wherein,
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
17. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 16-PSK element:
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
18. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 8-PSK element:
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
19. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the Q-PSK element:
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
Or,
Described code book is 3 o'clock at Rank,
Or,
Or,
Or,
Described code book is 4 o'clock at Rank,
Or,
20. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the 16-PSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
21. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the 16-PSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
22. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
23. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
24. the generation equipment of a code book is characterized in that, comprising:
Determination module is used for determining to generate the code book desired parameters;
Generation module, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Or,
Rank is 2 o'clock:
Or,
Or,
Rank is 3 o'clock:
Or,
Or,
Or,
Rank is 4 o'clock:
Or,
Wherein,
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer, Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.
25. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Or,
Described code book is 3 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:
Or,
Or,
Described code book is 4 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:
Or
26. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
27. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
28. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element:
Described code book is 1 o'clock at Rank, P 1=P 2=4, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
29. an information transmitting apparatus is characterized in that, comprising:
Receiver module is used to receive the signal that comprises code book index information, extracts code book index information;
Select module, be used for selecting corresponding pre-coding matrix according to code book index information from code book, described code book is the arbitrary described code book of claim 1 to 13;
Precoding module is used for carrying out precoding according to pre-coding matrix to sent data;
Sending module is used for the signal after the precoding is sent to receiving terminal.
30. a channel condition information feedback device is characterized in that, comprising:
Receiver module is used for the information that receiving end/sending end sends;
Estimation module is used for based on the information estimating channel information that receives;
Select module, be used for according to channel information, select corresponding pre-coding matrix from the subclass of code book or code book, described code book is the arbitrary described code book of claim 1 to 13;
Sending module is used to send the signal that comprises the pairing code book index information of selected pre-coding matrix.
CN201110097213.7A 2011-04-18 2011-04-18 Method and equipment for generating codebook and sending and feeding back information CN102122983B (en)

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