CN110011710A - Pre-coding matrix generation method and pre-coding matrix generating means - Google Patents
Pre-coding matrix generation method and pre-coding matrix generating means Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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Abstract
The present invention provides a kind of pre-coding matrix generation method and pre-coding matrix generating means, method includes: the selection preset quantity transmission antenna port from multiple transmission antenna ports of transmitting terminal, forms transmission antenna port subset；Calculate user's used first multi-user's multiple-input and multiple-output preconditioning matrix on the transmission antenna port subset of first resource；User's used second multi-user's multiple-input and multiple-output preconditioning matrix on the transmission antenna port subset of Secondary resource is obtained according to first multi-user's multiple-input and multiple-output preconditioning matrix；The pre-coding matrix that user uses under the mixed transmission modes on multiple transmission antenna ports is obtained according to first multi-user's multiple-input and multiple-output preconditioning matrix and second multi-user's multiple-input and multiple-output preconditioning matrix.Pre-coding matrix of the invention generates scheme and is suitable for multi-user's multiple-input and multiple-output scene.
Description
Technical field
The present invention relates to wireless technical field, particularly relates to a kind of pre-coding matrix generation method and pre-coding matrix generates
Device.
Background technique
With the development of global high-speed rail technology, the high-speed rail in China also achieved the development advanced by leaps and bounds, by the end of 2016
The high-speed rail operating mileage in bottom China has reached 20,000 2 thousand kilometers, and passenger is more than 5,000,000,000 person-times.In rail traffic station and route
On, the data in mobile phone flow of passenger is positively correlated in the way time, it was predicted that the annual data flow under high-speed rail scene will be more than 20,000
Hundred million MB.Therefore, high-speed rail communication has been developed as China, or even the very important a kind of mobile communication scene in the whole world.
Existing 3GPP (the third generation affiliate meter in net high-speed mobile (high-speed rail) scene of 4G (fourth generation mobile communication technology)
Draw) MIMO that can actually support of LTE (Long Term Evolution, long term evolution)/LTE-Advanced standard
(Multiple-Input Multiple-Output, multiple-input and multiple-output) transmission mode is TM2 (transmission mode
2, transmission mode 2) and TM3 (transmission mode 3, transmission mode 3), i.e. SFBC (SFBC (Space Frequency
Block Code, space-frequency block codes) (Frequency Switch Transmit Diversity, frequency error factor is sent to be divided+FSTD
Collection)) and CDD (Cyclic Delay Diversity, cyclic delay diversity).But in view of high-speed mobile actual channel propagates ring
The characteristics of border, (CDD was single user multiple stream transmission, needs more rich channel dispersion environment, channel model in practical high-speed rail scene
It is usually modeled as Rician channel, i.e. direct projection diameter is stronger compared to the energy/power of non-direct projection diameter), most-often used transmission mode
The SFBC transmission method for being two antenna ports (is SFBC+FSTD) when 4 antenna port.
The maximum movement speed that 3GPP LTE/LTE-Advanced standard is supported at present is 350km/h, and 5G the (the 4th
Third-generation mobile communication technology)-NR (New Radio, newly eat dishes without rice or wine) for movement speed requirement promotion arrived 500km/h, in order to protect
Demonstrate,prove the keys such as the user experience rate of high-speed mobile scene at maximum 500km/h, system spectral efficiency, handover success rate
KPI (Key Performance Indicator, KPI Key Performance Indicator), for the mobile communication ability under high-speed mobile scene
Performance enhancement be very important.
But as noted previously, as SFBC transmission plan belongs to a kind of transmission deversity scheme, the purpose of design is to be used for
Promoted user SNR (Signal Noise Ratio, signal-to-noise ratio), for system spectral efficiency promotion effect than relatively limited.
And for traditional MU-MIMO, (how defeated Multi-User Multiple-Input Multiple-Output, multi-user's multi input be
Out), it generally requires in known more accurate CSIT (channel state information at transmitter, transmitting terminal
Channel state information) in the case where could embody its performance advantage.To sum up, the high spectrum in the case where perfect CSIT can not be obtained
How efficacious prescriptions case obtains higher spectrum efficiency performance, is still a letter problem to be solved.
Summary of the invention
It is raw that the embodiment of the present invention is capable of providing a kind of pre-coding matrix sent under diversity and MU-MIMO mixed transmission modes
At method and pre-coding matrix generating means.
It is as follows that the embodiment of the present invention provides technical solution:
On the one hand, a kind of pre-coding matrix generation method is provided, comprising:
Preset quantity transmission antenna port is selected from multiple transmission antenna ports of transmitting terminal, forms transmission antenna end
Openning collection；
It is more to calculate user's used first multi-user's multi input on the transmission antenna port subset of first resource
Export preconditioning matrix；
According to the first multi-user multiple-input and multiple-output preconditioning matrix obtain the user in Secondary resource described in
Second multi-user's multiple-input and multiple-output preconditioning matrix used on transmission antenna port subset, wherein described first is multi-purpose
Family multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output preconditioning matrix unitary matrice each other；
According to the first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output
Preconditioning matrix obtains the precoding square that the user uses under the mixed transmission modes on the multiple transmission antenna port
Battle array.
Further, described according to the first multi-user multiple-input and multiple-output preconditioning matrix and second multi-user
Multiple-input and multiple-output preconditioning matrix obtains the user to be made under the mixed transmission modes on the multiple transmission antenna port
Code book includes:
According to the first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output
Preconditioning matrix extends to obtain mixed transport of the user on the multiple transmission antenna port in the way of unitary matrice
The pre-coding matrix used under mode, two column in the pre-coding matrix respectively correspond the first resource and second money
Source.
Further, the step of obtaining multi-user's multiple-input and multiple-output preconditioning matrix include:
Multi-user's multiple-input and multiple-output preconditioning matrix is obtained according to channel calculation；Or
Scheduling of the user according to multi-user's multiple-input and multiple-output is received with pairing as a result, selecting from predefined codebook set
The multi-user's multiple-input and multiple-output preconditioning matrix selected.
Further, it is described how defeated according to the first multi-user multi input when the quantity in transmission antenna port is equal to 2
Preconditioning matrix obtains the user used second multi-user on the transmission antenna port subset of Secondary resource out
Multiple-input and multiple-output preconditioning matrix includes:
Multi-user multiple-input and multiple-output preconditioning matrix of k-th of user in n-th of resource be
Pre-coding matrix of the user k on two different resources n and m needs to meet following relationship:
Formula (1) is substituted into formula (2), multi-user multiple-input and multiple-output of k-th of user in n-th of resource is obtained
Preconditioning matrix Wk(n)。
Further, when the quantity in transmission antenna port is equal to 4, the precoding of user k is obtained using following formula (3)
Matrix
Element in above-mentioned matrixP=1,2,3,4 is obtained by formula (1) and (2).
Further, the resource includes time resource and frequency resource.
The embodiment of the invention also provides a kind of pre-coding matrix generating means, comprising:
Selecting module, for selecting preset quantity transmission antenna port from multiple transmission antenna ports of transmitting terminal,
Form transmission antenna port subset；
First computing module, for calculate user on the transmission antenna port subset of first resource used in the
One multi-user's multiple-input and multiple-output preconditioning matrix；
Second computing module, for obtaining the user according to the first multi-user multiple-input and multiple-output preconditioning matrix
Second multi-user's multiple-input and multiple-output preconditioning matrix used on the transmission antenna port subset of Secondary resource,
In, the first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output preconditioning matrix
Unitary matrice each other；
Third computing module, for according to the first multi-user multiple-input and multiple-output preconditioning matrix and described more than second
User's multiple-input and multiple-output preconditioning matrix obtains mixed transmission modes of the user on the multiple transmission antenna port
The lower pre-coding matrix used.
Further, the third computing module is specifically used for being pre-processed according to the first multi-user multiple-input and multiple-output
Matrix and the second multi-user multiple-input and multiple-output preconditioning matrix, extend to obtain the user in the way of unitary matrice and exist
The pre-coding matrix used under mixed transmission modes on the multiple transmission antenna port, two column in the pre-coding matrix
Respectively correspond the first resource and the Secondary resource.
Further, first computing module and second computing module are specifically used for being obtained according to channel calculation more
User's multiple-input and multiple-output preconditioning matrix；Or
Scheduling of the user according to multi-user's multiple-input and multiple-output is received with pairing as a result, selecting from predefined codebook set
The multi-user's multiple-input and multiple-output preconditioning matrix selected.
Further, when the quantity in transmission antenna port is equal to 2, second computing module is specifically used for using following
Formula obtains multi-user multiple-input and multiple-output preconditioning matrix W of k-th of user in n-th of resourcek(n):
Multi-user multiple-input and multiple-output preconditioning matrix of k-th of user in n-th of resource be
Pre-coding matrix of the user k on two different resources n and m needs to meet following relationship:
Formula (1) is substituted into formula (2), multi-user multiple-input and multiple-output of k-th of user in n-th of resource is obtained
Preconditioning matrix Wk(n)。
Further, when the quantity in transmission antenna port is equal to 4, the third computing module is specifically used for using as follows
Formula (3) obtains the pre-coding matrix of user k
Element in above-mentioned matrixP=1,2,3,4 is obtained by formula (1) and (2).
Further, the resource includes time resource and frequency resource.
The embodiment of the invention also provides a kind of pre-coding matrix generating means, including memory, processor and it is stored in
On the memory and the computer program that can run on the processor；The processor is realized such as when executing described program
The upper pre-coding matrix generation method.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the journey
The step in pre-coding matrix generation method as described above is realized when sequence is executed by processor.
The embodiment of the present invention has the advantages that
In above scheme, preset quantity transmission antenna port, group are selected from multiple transmission antenna ports of transmitting terminal
At transmission antenna port subset, it is more to calculate user used first multi-user on the transmission antenna port subset of first resource
Multi output preconditioning matrix is inputted, user is obtained in Secondary resource according to first multi-user's multiple-input and multiple-output preconditioning matrix
Second multi-user's multiple-input and multiple-output preconditioning matrix used on transmission antenna port subset, wherein the first multi-user is more
Multi output preconditioning matrix and second multi-user's multiple-input and multiple-output preconditioning matrix unitary matrice each other are inputted, it is multi-purpose according to first
Family multiple-input and multiple-output preconditioning matrix and second multi-user's multiple-input and multiple-output preconditioning matrix obtain user in multiple transmissions
The pre-coding matrix used under mixed transmission modes on antenna port, the preconditioning matrix energy that technical solution of the present invention generates
Enough it is suitable for multi-user's multiple-input and multiple-output scene, and higher spectrum efficiency performance can be obtained.
Detailed description of the invention
Fig. 1 is the flow diagram of pre-coding matrix of embodiment of the present invention generation method；
Fig. 2 is the system block diagram that the embodiment of the present invention sends diversity and MU-MIMO mixed transport mode；
Fig. 3 is the structural schematic diagram of pre-coding matrix of embodiment of the present invention generating means.
Specific embodiment
To keep the embodiment of the present invention technical problems to be solved, technical solution and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.
It is raw that the embodiment of the present invention is capable of providing a kind of pre-coding matrix sent under diversity and MU-MIMO mixed transmission modes
At method and pre-coding matrix generating means.
The embodiment of the present invention provides a kind of pre-coding matrix generation method first, as shown in Figure 1, comprising:
Step 101: preset quantity transmission antenna port, composition hair are selected from multiple transmission antenna ports of transmitting terminal
Antennas port subset；
Step 102: calculating user used first multi-user on the transmission antenna port subset of first resource
Multiple-input and multiple-output preconditioning matrix；
Step 103: the user is obtained in the second money according to the first multi-user multiple-input and multiple-output preconditioning matrix
Second multi-user's multiple-input and multiple-output preconditioning matrix used on the transmission antenna port subset in source, wherein described
First multi-user's multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output preconditioning matrix tenth of the twelve Earthly Branches each other
Matrix；
Step 104: how defeated according to the first multi-user multiple-input and multiple-output preconditioning matrix and second multi-user
Enter multi output preconditioning matrix and obtains what the user used under the mixed transmission modes on the multiple transmission antenna port
Pre-coding matrix.
In the present embodiment, preset quantity transmission antenna port, group are selected from multiple transmission antenna ports of transmitting terminal
At transmission antenna port subset, it is more to calculate user used first multi-user on the transmission antenna port subset of first resource
Multi output preconditioning matrix is inputted, user is obtained in Secondary resource according to first multi-user's multiple-input and multiple-output preconditioning matrix
Second multi-user's multiple-input and multiple-output preconditioning matrix used on transmission antenna port subset, wherein the first multi-user is more
Multi output preconditioning matrix and second multi-user's multiple-input and multiple-output preconditioning matrix unitary matrice each other are inputted, it is multi-purpose according to first
Family multiple-input and multiple-output preconditioning matrix and second multi-user's multiple-input and multiple-output preconditioning matrix obtain user in multiple transmissions
The pre-coding matrix used under mixed transmission modes on antenna port, the preconditioning matrix energy that technical solution of the present invention generates
Enough it is suitable for multi-user's multiple-input and multiple-output scene, and higher spectrum efficiency performance can be obtained.
Further, described according to the first multi-user multiple-input and multiple-output preconditioning matrix and second multi-user
Multiple-input and multiple-output preconditioning matrix obtains the user to be made under the mixed transmission modes on the multiple transmission antenna port
Code book includes:
According to the first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output
Preconditioning matrix extends to obtain mixed transport of the user on the multiple transmission antenna port in the way of unitary matrice
The pre-coding matrix used under mode, two column in the pre-coding matrix respectively correspond the first resource and second money
Source.
Further, the step of obtaining multi-user's multiple-input and multiple-output preconditioning matrix include:
Multi-user's multiple-input and multiple-output preconditioning matrix is obtained according to channel calculation；Or
Scheduling of the user according to multi-user's multiple-input and multiple-output is received with pairing as a result, selecting from predefined codebook set
The multi-user's multiple-input and multiple-output preconditioning matrix selected.
The present embodiment proposes a kind of precoding sent under diversity (SFBC/STBC) and MU-MIMO mixed transport mode
Matrix generates scheme.Under the mixed transport mode, the transmitting terminal of Physical Downlink Shared Channel and the physical layer process of receiving end
Process is as follows:
Transmitting terminal process are as follows: each TB block (transmission block) is reflected by coding, scrambling, modulation, layer mapping, precoding, resource
It penetrates, OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) modulation, is mapped to phase
The antenna port answered, and sent.
Receive process are the inverse process of the above process, it may be assumed that OFDM demodulation, solution resource impact, channel estimation, equilibrium, demodulation,
Descrambling, decoding recover transmission information.
The specific processing mode of precoding module is different from existing MIMO transmission scheme in transmitting terminal process in the present embodiment,
Wherein the realization structure of precoding module is as shown in Figure 2.MU-MIMO spatial reuse processing is carried out i.e. in the present embodiment first, so
Transmission diversity (STBC/SFBC) transmission of multi-user is carried out afterwards.It should be understood that existing transmission diversity (SFBC/STBC) is all
It is to be directed to SU-MIMO, and be multiplexed without Multi-User Dimension and send diversity mixed transmission modes.
The signal expression that transmission antenna port is sent in the present embodiment can be written as following form:
When receiving end has Nr=1 receiving antenna, transmitting terminal have NtWhen=2 transmission antenna ports,Be size be Nr×NtUser 1 be located at the mimo channel in the 1st resource,
Be size be Nr×NtUser 2 be located at the mimo channel in the 2nd resource.It is g-th of antenna port of base station end and use
The channel coefficients of family k being located in n-th of resource.It is and channelCoefficient in corresponding preconditioning matrix.
Wk(n) indicate that the size that user k is located in n-th of resource is Nt× 1 pre-coding matrix.User 1 is respectively indicated to exist
Reception signal in resource 1 and resource 2, s1And s2Respectively indicate the 1st and the 2nd hair of the user without MIMO precoding processing
The number of delivering letters, z1Indicate the multiple Gauss noise of the 1st user receiving end, γ1And γ2Respectively indicate the 1st user and the 2nd user
Transmission power.
MIMO code book producing method corresponding with mixed transmission modes are as follows: firstly, from NtIt is selected in a transmission antennaIt is a
Antenna.Secondly, calculating thisK-th of user used MU-MIMO preconditioning matrix W in n-th of resource on a antennak
(n), the acquisition of preconditioning matrix can be obtained according to channel calculation here, or be tied according to the scheduling and pairing of multiuser MIMO
Fruit, user select from predefined codebook set, and the mode fed back to base station side obtains.Again, according to k-th obtained
User is in n-th of resourceMU-MIMO preconditioning matrix on a antenna obtains the user in m-th of resourceOn a antenna
MU-MIMO preconditioning matrix Wk(m).Wherein Wk(n) and Wk(m) it needs to meet: the relationship of unitary matrice each other.Finally, according to
Family k is in m-th and n-th of resourcePreconditioning matrix W on a antennak(n) and Wk(m), it is extended in the way of unitary matrice
K-th of user is obtained in NtThe code book used under mixed transmission modes on a antennaHere the extended mode of unitary matrice is:
By zero padding, fromPreconditioning matrix W on a antennak(n) and Wk(m) N is respectively obtainedtPreconditioning matrix on a antennaWithAnd makeWithIn column vector/row vector still meet the orthogonal of vector in complex field
Property.
In order to reduce the complexity of receiver MIMO detection, need to guarantee the preconditioning matrix of the transmitting terminal of SFBC/STBC
It is a unitary matrice (orthogonal matrix in complex field).The case where when therefore for 2 antenna ports, user k is in two differences
Pre-coding matrix on resource (time or frequency resource) n and m needs to meet following relationship:
The case where when for antenna port number >=2, passes through 2 antenna ends by the way of SFBC+FSTD or STBC+TSTD
Mouthful when the case where be extended to obtain, such as: when antenna port number be equal to 4 when, the pre-coding matrix of user k can be expressed as
Flowering structure:
It is the case where when other antenna numbers, similar, it repeats no more.
It should be understood that the element in above-mentioned matrixCalculation method and the calculation method phase in existing MU-MIMO
Together, such as: (Block diagonalization sigular value decomposition, block diagonalization are unusual by BD-SVD
Value is decomposed), or the MU-MIMO preconditioning matrix generated offline according to certain criterion.It is provided obtaining k-th of user at n-th
MU-MIMO preconditioning matrix on source
Afterwards, it needs to be extended according to the mixed transmission modes precoding structure in above-mentioned formula (1) or formula (2), so as to
Pre-coding matrix W to k-th of user, on all antenna ports and all resourcesk。
It is not unique from the extended method of 2 antennas to 4 antennas or even 2N (N is greater than 2) a antenna, such as by taking 4 antennas as an example,
In matrix (3) any two column exchange obtained matrix and can become the pre-coding matrix of 4 antennas (be still unitary matrice, i.e. square
Any two column of battle array or two rows are orthogonal in complex field).Such as:
Deng.
Based on 2 antenna preconditioning matrixs, the pre-coding matrix of 4 antennas is expanded in the way of unitary matrice, then 2 days
" first resource " and " Secondary resource " in line corresponds to certain two column in the pre-coding matrix of 4 antennas obtained after extension.
The embodiment of the invention also provides a kind of pre-coding matrix generating means, as shown in Figure 3, comprising:
Selecting module 21, for selecting preset quantity transmission antenna end from multiple transmission antenna ports of transmitting terminal
Mouthful, form transmission antenna port subset；
First computing module 22, it is used on the transmission antenna port subset of first resource for calculating user
First multi-user's multiple-input and multiple-output preconditioning matrix；
Second computing module 23, for obtaining the use according to the first multi-user multiple-input and multiple-output preconditioning matrix
Family used second multi-user's multiple-input and multiple-output preconditioning matrix on the transmission antenna port subset of Secondary resource,
Wherein, the first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output pre-process square
Battle array unitary matrice each other；
Third computing module 24, for according to the first multi-user multiple-input and multiple-output preconditioning matrix and described second
Multi-user's multiple-input and multiple-output preconditioning matrix obtains mixed transport mould of the user on the multiple transmission antenna port
The pre-coding matrix used under formula.
In the present embodiment, preset quantity transmission antenna port, group are selected from multiple transmission antenna ports of transmitting terminal
At transmission antenna port subset, it is more to calculate user used first multi-user on the transmission antenna port subset of first resource
Multi output preconditioning matrix is inputted, user is obtained in Secondary resource according to first multi-user's multiple-input and multiple-output preconditioning matrix
Second multi-user's multiple-input and multiple-output preconditioning matrix used on transmission antenna port subset, wherein the first multi-user is more
Multi output preconditioning matrix and second multi-user's multiple-input and multiple-output preconditioning matrix unitary matrice each other are inputted, it is multi-purpose according to first
Family multiple-input and multiple-output preconditioning matrix and second multi-user's multiple-input and multiple-output preconditioning matrix obtain user in multiple transmissions
The pre-coding matrix used under mixed transmission modes on antenna port, the preconditioning matrix energy that technical solution of the present invention generates
Enough it is suitable for multi-user's multiple-input and multiple-output scene, and higher spectrum efficiency performance can be obtained.
Further, the third computing module 24 is specifically used for being located in advance according to the first multi-user multiple-input and multiple-output
Matrix and the second multi-user multiple-input and multiple-output preconditioning matrix are managed, extends to obtain the user in the way of unitary matrice
The pre-coding matrix used under the mixed transmission modes on the multiple transmission antenna port, two in the pre-coding matrix
Column respectively correspond the first resource and the Secondary resource.
Further, first computing module 22 and second computing module 23 are specifically used for being obtained according to channel calculation
To multi-user's multiple-input and multiple-output preconditioning matrix；Or
Scheduling of the user according to multi-user's multiple-input and multiple-output is received with pairing as a result, selecting from predefined codebook set
The multi-user's multiple-input and multiple-output preconditioning matrix selected.
Further, transmission antenna port quantity be equal to 2 when, second computing module 23 be specifically used for utilize with
Lower formula obtains multi-user multiple-input and multiple-output preconditioning matrix W of k-th of user in n-th of resourcek(n):
Multi-user multiple-input and multiple-output preconditioning matrix of k-th of user in n-th of resource be
Pre-coding matrix of the user k on two different resources n and m needs to meet following relationship:
Formula (1) is substituted into formula (2), multi-user multiple-input and multiple-output of k-th of user in n-th of resource is obtained
Preconditioning matrix Wk(n)。
Further, when the quantity in transmission antenna port is equal to 4, the third computing module 24 is specifically used for using such as
Lower formula (3) obtains the pre-coding matrix of user k
Element in above-mentioned matrixP=1,2,3,4 is obtained by formula (1) and (2).
Further, the resource includes time resource and frequency resource.
The embodiment of the invention also provides a kind of pre-coding matrix generating means, including memory, processor and it is stored in
On the memory and the computer program that can run on the processor；The processor is realized such as when executing described program
The upper pre-coding matrix generation method.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the journey
The step in pre-coding matrix generation method as described above is realized when sequence is executed by processor.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (14)
1. a kind of pre-coding matrix generation method characterized by comprising
Preset quantity transmission antenna port, composition transmission antenna port are selected from multiple transmission antenna ports of transmitting terminal
Collection；
Calculate user's used first multi-user's multiple-input and multiple-output on the transmission antenna port subset of first resource
Preconditioning matrix；
The user is obtained in the transmission of Secondary resource according to the first multi-user multiple-input and multiple-output preconditioning matrix
Second multi-user's multiple-input and multiple-output preconditioning matrix used in antenna port subset, wherein first multi-user is more
Input multi output preconditioning matrix and the second multi-user multiple-input and multiple-output preconditioning matrix unitary matrice each other；
Located in advance according to the first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output
Reason matrix obtains the pre-coding matrix that the user uses under the mixed transmission modes on the multiple transmission antenna port.
2. pre-coding matrix generation method according to claim 1, which is characterized in that described according to first multi-user
Multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output preconditioning matrix obtain the user in institute
Stating the code book used under the mixed transmission modes on multiple transmission antenna ports includes:
Located in advance according to the first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output
Matrix is managed, extends to obtain mixed transmission modes of the user on the multiple transmission antenna port in the way of unitary matrice
The lower pre-coding matrix used, two column in the pre-coding matrix respectively correspond the first resource and the Secondary resource.
3. pre-coding matrix generation method according to claim 2, which is characterized in that obtain multi-user's multiple-input and multiple-output
The step of preconditioning matrix includes:
Multi-user's multiple-input and multiple-output preconditioning matrix is obtained according to channel calculation；Or
Scheduling of the user according to multi-user's multiple-input and multiple-output is received with pairing as a result, selecting from predefined codebook set
Multi-user's multiple-input and multiple-output preconditioning matrix.
4. pre-coding matrix generation method according to claim 2, which is characterized in that the quantity etc. in transmission antenna port
It is described that the user is obtained in the institute of Secondary resource according to the first multi-user multiple-input and multiple-output preconditioning matrix when 2
Stating used second multi-user's multiple-input and multiple-output preconditioning matrix on transmission antenna port subset includes:
Multi-user multiple-input and multiple-output preconditioning matrix of k-th of user in n-th of resource be
Pre-coding matrix of the user k on two different resources n and m needs to meet following relationship:
Formula (1) is substituted into formula (2), multi-user multiple-input and multiple-output of k-th of user in n-th of resource is obtained and locates in advance
Manage matrix Wk(n)。
5. pre-coding matrix generation method according to claim 4, which is characterized in that the quantity etc. in transmission antenna port
When 4, the pre-coding matrix of user k is obtained using following formula (3)
Element in above-mentioned matrixP=1,2,3,4 is obtained by formula (1) and (2).
6. pre-coding matrix generation method according to claim 1, which is characterized in that the resource include time resource and
Frequency resource.
7. a kind of pre-coding matrix generating means characterized by comprising
Selecting module, for selecting preset quantity transmission antenna port, composition from multiple transmission antenna ports of transmitting terminal
Transmission antenna port subset；
First computing module, for calculating user used more than first on the transmission antenna port subset of first resource
User's multiple-input and multiple-output preconditioning matrix；
Second computing module, for obtaining the user according to the first multi-user multiple-input and multiple-output preconditioning matrix
Second multi-user's multiple-input and multiple-output preconditioning matrix used on the transmission antenna port subset of two resources, wherein
The first multi-user multiple-input and multiple-output preconditioning matrix and the second multi-user multiple-input and multiple-output preconditioning matrix are mutual
For unitary matrice；
Third computing module, for according to the first multi-user multiple-input and multiple-output preconditioning matrix and second multi-user
Multiple-input and multiple-output preconditioning matrix obtains the user to be made under the mixed transmission modes on the multiple transmission antenna port
Pre-coding matrix.
8. pre-coding matrix generating means according to claim 7, which is characterized in that
The third computing module is specifically used for according to the first multi-user multiple-input and multiple-output preconditioning matrix and described the
Two multi-user's multiple-input and multiple-output preconditioning matrixs extend to obtain in the way of unitary matrice the user in the multiple transmission
The pre-coding matrix used under mixed transmission modes on antenna port, two column in the pre-coding matrix respectively correspond described
First resource and the Secondary resource.
9. pre-coding matrix generating means according to claim 8, which is characterized in that
First computing module and second computing module are more specifically for obtaining multi-user's multi input according to channel calculation
Export preconditioning matrix；Or
Scheduling of the user according to multi-user's multiple-input and multiple-output is received with pairing as a result, selecting from predefined codebook set
Multi-user's multiple-input and multiple-output preconditioning matrix.
10. pre-coding matrix generating means according to claim 8, which is characterized in that the quantity in transmission antenna port
When equal to 2, second computing module is multi-purpose in n-th of resource specifically for obtaining k-th of user using following formula
Family multiple-input and multiple-output preconditioning matrix Wk(n):
Multi-user multiple-input and multiple-output preconditioning matrix of k-th of user in n-th of resource be
Pre-coding matrix of the user k on two different resources n and m needs to meet following relationship:
Formula (1) is substituted into formula (2), multi-user multiple-input and multiple-output of k-th of user in n-th of resource is obtained and locates in advance
Manage matrix Wk(n)。
11. pre-coding matrix generating means according to claim 10, which is characterized in that the quantity in transmission antenna port
When equal to 4, the third computing module is specifically used for obtaining the pre-coding matrix of user k using following formula (3)
Element in above-mentioned matrixP=1,2,3,4 is obtained by formula (1) and (2).
12. pre-coding matrix generating means according to claim 7, which is characterized in that the resource includes time resource
And frequency resource.
13. a kind of pre-coding matrix generating means, including memory, processor and it is stored on the memory and can be described
The computer program run on processor；It is characterized in that, the processor realizes such as claim 1-6 when executing described program
Any one of described in pre-coding matrix generation method.
14. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The step in pre-coding matrix generation method as claimed in any one of claims 1 to 6 is realized when execution.
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| CN103051432A (en) * | 2013-01-24 | 2013-04-17 | 河南理工大学 | Method for eliminating multiuser interference inside X channel |
| CN103220024A (en) * | 2013-04-18 | 2013-07-24 | 电子科技大学 | Beam forming algorithm of multi-user pairing virtual multi-input multi-output (MIMO) system |
| CN103731190A (en) * | 2012-10-16 | 2014-04-16 | 华为技术有限公司 | Signal transmission method, base station and system of multi-user and multiple-input-multiple-output system |
| CN103840870A (en) * | 2013-12-31 | 2014-06-04 | 重庆邮电大学 | Method for lowering limiting feedback expenditure of 3D MIMO channel |
| US20160301499A1 (en) * | 2013-04-10 | 2016-10-13 | Samsubg Electronics Co., Ltd. | Relay method and relay system for relaying temporal-spatial block code scheme-based data using multiple relay terminals |
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| CN103731190A (en) * | 2012-10-16 | 2014-04-16 | 华为技术有限公司 | Signal transmission method, base station and system of multi-user and multiple-input-multiple-output system |
| CN103051432A (en) * | 2013-01-24 | 2013-04-17 | 河南理工大学 | Method for eliminating multiuser interference inside X channel |
| US20160301499A1 (en) * | 2013-04-10 | 2016-10-13 | Samsubg Electronics Co., Ltd. | Relay method and relay system for relaying temporal-spatial block code scheme-based data using multiple relay terminals |
| CN103220024A (en) * | 2013-04-18 | 2013-07-24 | 电子科技大学 | Beam forming algorithm of multi-user pairing virtual multi-input multi-output (MIMO) system |
| CN103840870A (en) * | 2013-12-31 | 2014-06-04 | 重庆邮电大学 | Method for lowering limiting feedback expenditure of 3D MIMO channel |
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