CN106452697A - Sending method and apparatus, and receiving method and apparatus of uplink data - Google Patents

Sending method and apparatus, and receiving method and apparatus of uplink data Download PDF

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Publication number
CN106452697A
CN106452697A CN201510472481.0A CN201510472481A CN106452697A CN 106452697 A CN106452697 A CN 106452697A CN 201510472481 A CN201510472481 A CN 201510472481A CN 106452697 A CN106452697 A CN 106452697A
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China
Prior art keywords
upstream data
orthogonal multiple
pattern vector
frequency resource
running time
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CN201510472481.0A
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CN106452697B (en
Inventor
康绍莉
宋扬
秦飞
孙韶辉
任斌
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201510472481.0A priority Critical patent/CN106452697B/en
Priority to PCT/CN2016/089197 priority patent/WO2017020680A1/en
Publication of CN106452697A publication Critical patent/CN106452697A/en
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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
    • 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
    • H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity

Abstract

The invention discloses a sending method and apparatus, and a receiving method and apparatus of uplink data. The sending method includes: performing non-orthogonal multiple access coding modulation on the uplink data through channel coding by employing a non-orthogonal multiple access pattern vector corresponding to the uplink data, wherein the uplink data through the non-orthogonal multiple access coding modulation refers to modulation symbols of the non-orthogonal multiple access pattern vector; and generating an OFDM symbol of each antenna port through power adjustment, transmission layer mapping, MIMO pre-coding and resource mapping of the modulation symbols. According to the methods and apparatuses, the non-orthogonal multiple access technology and the uplink MIMO technology are combined, characteristics of the non-orthogonal multiple access technology in the time-frequency domain, the coding domain, the power domain and the airspace etc. are fully utilized, simultaneous data transmission at the same time-frequency resource by more terminals can be supported, and the system capacity or the number of accessed terminals can be increased.

Description

A kind of sending method of upstream data, method of reseptance and device
Technical field
The present invention relates to communication technical field, more particularly, to a kind of sending method of upstream data, method of reseptance And device.
Background technology
Multiple-input and multiple-output (MIMO) technology is as the key of Long Term Evolution (LTE) and its evolution system One of technology, has been used widely and has constantly strengthened.But still future communications cannot be met to user's appearance The demand of amount.
How to support that more users access in same cell, be problem demanding prompt solution.
Content of the invention
It is an object of the invention to provide a kind of sending method of upstream data, method of reseptance and device, to solve In same cell, how to support the problem that more users access.
The purpose of the present invention is achieved through the following technical solutions：
A kind of sending method of upstream data, including：
The pattern vector being accessed using the corresponding non-orthogonal multiple of upstream data, to through described in chnnel coding Upstream data carries out non-orthogonal multiple and accesses coded modulation, accesses code modulated up through non-orthogonal multiple Data is referred to as the modulation symbol of the pattern vector that non-orthogonal multiple accesses；
Power adjustment is carried out to described modulation symbol；
Modulation symbol after power is adjusted is transmitted layer mapping；
The corresponding multiple-input and multiple-output MIMO of the pattern vector being accessed using described non-orthogonal multiple is prelisted Code matrix, carries out MIMO precoding to the modulation symbol through overpower adjustment and transport layer mapping；
The instruction of the pattern vector accessing according to described non-orthogonal multiple, to right through MIMO precoding Time-frequency resource maps should be carried out in the modulation symbol of each antenna port；
According to the modulation symbol after time-frequency resource maps, generate the OFDM of each antenna port OFDM symbol simultaneously sends.
Optionally, the described pattern Vector Modulation symbol that described non-orthogonal multiple is accessed carries out power adjustment, Including：
Carry out power distribution according to base station instruction or autonomous determination, the figure to described non-orthogonal multiple access technology Sample Vector Modulation symbol carries out power adjustment.
Based on above-mentioned any means embodiment, optionally, it is the figure accessing corresponding to different non-orthogonal multiple The power of the upstream data distribution of sample vector is different；Or, it is to access corresponding to different non-orthogonal multiple The power of the upstream data distribution of pattern vector is identical.
Based on above-mentioned any means embodiment, optionally, all transport layers of all terminals are using mutually orthogonal Demodulated reference signal DMRS.
Based on above-mentioned any means embodiment, optionally, described power is adjusted after non-orthogonal multiple access Pattern Vector Modulation symbol be transmitted layer mapping, including：
The pattern Vector Modulation symbol that non-orthogonal multiple after power is adjusted accesses is mapped to n transport layer, Described n is the maximum row of the pattern matrix that the pattern vector accessing not less than the non-orthogonal multiple of this terminal is constituted Weight；Wherein, the modulation symbol of the pattern vector of a non-orthogonal multiple access is mapped to one or more transmission Layer.
A kind of method of reseptance of upstream data, including：
According to channel estimation results, the non-orthogonal multiple reconstructing the multiple terminals of one piece of running time-frequency resource accesses extension sky Frequency equivalent channel matrix, the non-orthogonal multiple of the multiple terminals of described running time-frequency resource accesses extension null tone equivalent channel Matrix accesses extension by the non-orthogonal multiple taking each terminal sending upstream data on described running time-frequency resource Null tone equivalent channel is constituted, and each terminal described accesses extension null tone in the non-orthogonal multiple of described running time-frequency resource The corresponding multiple frequency domain resource of upstream data that equivalent channel is sent in described running time-frequency resource by this terminal Mimo channel is estimated to constitute, and the corresponding multiple frequency domain resource of described upstream data are corresponded to by described upstream data Non-orthogonal multiple access pattern vector instruction；
The non-orthogonal multiple of the multiple terminals according to described running time-frequency resource accesses extension null tone equivalent channel matrix inspection Survey the upstream data of the transmission in described running time-frequency resource for multiple terminals.
Optionally, described according to channel estimation results, reconstruct one piece of running time-frequency resource multiple terminals nonopiate many Extension null tone equivalent channel matrix is accessed in location, including：
According to channel estimation results, the mode according to first frequency domain spatial domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix；Or,
According to channel estimation results, the mode according to first spatial domain frequency domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix.
Based on above-mentioned any means embodiment, optionally, the method also includes：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
Based on above-mentioned any means embodiment, optionally, the described multiple terminals according to described running time-frequency resource is non- Orthogonal multiple access accesses the transmission extending the null tone equivalent channel matrix multiple terminals of detection in described running time-frequency resource Upstream data, including：
Using linearity test or non-linear detection mode, the multiple terminals according to described running time-frequency resource nonopiate many The upper line number that extension null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals is accessed in location According to, and carry out interference deletion or iterative detection decoding.
A kind of dispensing device of upstream data, including：
Non-orthogonal multiple accesses code modulation module, for being accessed using the corresponding non-orthogonal multiple of upstream data Pattern vector, the described upstream data through chnnel coding is carried out non-orthogonal multiple access coded modulation, Access code modulated upstream data through non-orthogonal multiple and be referred to as the pattern vector tune that non-orthogonal multiple accesses Symbol processed；
Power regulation module, for carrying out power adjustment to described modulation symbol；
Layer mapping block, is transmitted layer mapping for the modulation symbol after adjusting power；
MIMO precoding module, how defeated the pattern vector for being accessed using described non-orthogonal multiple is corresponding Enter multi output MIMO pre-coding matrix, the modulation symbol through overpower adjustment and transport layer mapping is carried out MIMO precoding；
Resource mapping module, the instruction of the pattern vector for accessing according to described non-orthogonal multiple, to process The modulation symbol corresponding to each antenna port of MIMO precoding carries out time-frequency resource maps；
OFDM symbol generation module, for according to the modulation symbol after time-frequency resource maps, generating each sky The orthogonal frequency division multiplex OFDM symbol of line end mouth simultaneously sends.
Optionally, described power regulation module is used for：
Indicate according to base station or independently determine distribution power, the pattern vector that described non-orthogonal multiple accesses is adjusted Symbol processed carries out power adjustment.
Based on above-mentioned any device embodiment, optionally, it is the figure accessing corresponding to different non-orthogonal multiple The power of the upstream data distribution of sample vector is different；Or, it is to access corresponding to different non-orthogonal multiple The power of the upstream data distribution of pattern vector is identical.
Based on above-mentioned any device embodiment, optionally, all transport layers of all terminals are using mutually orthogonal Demodulated reference signal DMRS.
Based on above-mentioned any device embodiment, optionally, described layer mapping block is used for：
Modulation symbol after power is adjusted is mapped to n transport layer, and described n is non-not less than this terminal The maximum row weight of the pattern matrix that the pattern vector that orthogonal multiple access accesses is constituted；Wherein, a non-orthogonal multiple The modulation symbol of the pattern vector accessing is mapped to one or more transport layers.
A kind of terminal, including：
Processor, for reading the program in memorizer, executes following process：
The pattern vector being accessed using the corresponding non-orthogonal multiple of upstream data, to through described in chnnel coding Upstream data carries out non-orthogonal multiple and accesses coded modulation, accesses code modulated up through non-orthogonal multiple Data is referred to as the modulation symbol of the pattern vector that non-orthogonal multiple accesses；
Power adjustment is carried out to described modulation symbol；
Modulation symbol after power is adjusted is transmitted layer mapping；
The corresponding multiple-input and multiple-output MIMO of the pattern vector being accessed using described non-orthogonal multiple is prelisted Code matrix, carries out MIMO precoding to the modulation symbol through overpower adjustment and transport layer mapping；
The instruction of the pattern vector accessing according to described non-orthogonal multiple, to right through MIMO precoding Time-frequency resource maps should be carried out in the modulation symbol of each antenna port；
According to the modulation symbol after time-frequency resource maps, generate the OFDM of each antenna port OFDM symbol is simultaneously sent by transceiver；
Transceiver, for receiving under the control of a processor and sending data；
Memorizer, for preserving the data being used during computing device operation.
Optionally, when the pattern Vector Modulation symbol described non-orthogonal multiple being accessed carries out power adjustment, place Reason device reading program from memorizer, executes following process：
Indicate according to base station or independently determine distribution power, the pattern vector that described non-orthogonal multiple accesses is adjusted Symbol processed carries out power adjustment.
Based on above-mentioned any terminal embodiment, optionally, it is the figure accessing corresponding to different non-orthogonal multiple The power of the upstream data distribution of sample vector is different；Or, it is to access corresponding to different non-orthogonal multiple The power of the upstream data distribution of pattern vector is identical.
Based on above-mentioned any terminal embodiment, optionally, all transport layers of all terminals are using mutually orthogonal Demodulated reference signal DMRS.
Based on above-mentioned any terminal embodiment, optionally, the modulation symbol after power is adjusted is transmitted layer During mapping, processor is used for reading program from memorizer, executes following process：
Modulation symbol after power is adjusted is mapped to n transport layer, and described n is non-not less than this terminal The maximum row weight of the pattern matrix that the pattern vector that orthogonal multiple access accesses is constituted；Wherein, a non-orthogonal multiple The modulation symbol of the pattern vector accessing is mapped to one or more transport layers.
A kind of reception device of upstream data, including：
Channel matrix reconstructed module, the non-orthogonal multiple for reconstructing the multiple terminals of one piece of running time-frequency resource accesses and expands Exhibition null tone equivalent channel matrix, the non-orthogonal multiple access extension null tone of the multiple terminals of described running time-frequency resource is equivalent Channel matrix is accessed by the non-orthogonal multiple taking each terminal sending upstream data on described running time-frequency resource Extension null tone equivalent channel is constituted, and each terminal described accesses extension in the non-orthogonal multiple of described running time-frequency resource The corresponding multiple frequency domain moneys of upstream data that null tone equivalent channel is sent in described running time-frequency resource by this terminal The mimo channel in source is estimated to constitute, and the corresponding multiple frequency domain resource of described upstream data are by described upper line number The pattern vector instruction accessing according to corresponding non-orthogonal multiple；
Upstream data detection module, the non-orthogonal multiple for the multiple terminals according to described running time-frequency resource accesses expansion Exhibition null tone equivalent channel matrix detects the upstream data of the transmission in described running time-frequency resource for multiple terminals.
Optionally, described channel matrix reconstructed module is used for：
According to channel estimation results, the mode according to first frequency domain spatial domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix；Or,
According to channel estimation results, the mode according to first spatial domain frequency domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix.
Based on above-mentioned any device embodiment, optionally, also include pattern vector distribute module, be used for：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
Based on above-mentioned any device embodiment, optionally, described upstream data detection module is used for：
Using linearity test or non-linear detection mode, the multiple terminals according to described running time-frequency resource nonopiate many The upper line number that extension null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals is accessed in location According to, and carry out interference deletion or iterative detection decoding.
A kind of base station, including：
Processor, for reading program from memorizer, executes following process：
The non-orthogonal multiple of the multiple terminals of one piece of running time-frequency resource of reconstruct accesses extension null tone equivalent channel matrix, institute State running time-frequency resource multiple terminals non-orthogonal multiple access extension null tone equivalent channel matrix by taking described when The non-orthogonal multiple sending each terminal of upstream data in frequency resource accesses extension null tone equivalent channel composition, Each terminal described accesses extension null tone equivalent channel by this terminal in the non-orthogonal multiple of described running time-frequency resource The mimo channel of the corresponding multiple frequency domain resource of upstream data sending in described running time-frequency resource estimates structure Become, the corresponding multiple frequency domain resource of described upstream data are accessed by the corresponding non-orthogonal multiple of described upstream data Pattern vector instruction；
The non-orthogonal multiple of the multiple terminals according to described running time-frequency resource accesses extension null tone equivalent channel matrix inspection Survey the upstream data of the transmission in described running time-frequency resource for multiple terminals；
Transceiver, for receiving under the control of a processor and sending data；
Memorizer, for preserving the data being used during computing device operation.
Optionally, according to channel estimation results, the non-orthogonal multiple of the multiple terminals of one running time-frequency resource of reconstruct connects When entering to extend null tone equivalent channel matrix, processor is used for reading program from memorizer, executes following process：
According to channel estimation results, the mode according to first frequency domain spatial domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix；Or,
According to channel estimation results, the mode according to first spatial domain frequency domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix.
Based on above-mentioned any base station embodiment, optionally, processor is additionally operable to reading program from memorizer, Execute following process：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
Based on above-mentioned any base station embodiment, optionally, the multiple terminals according to described running time-frequency resource is nonopiate Multiple access accesses the up of the transmission extending the null tone equivalent channel matrix multiple terminals of detection in described running time-frequency resource During data, processor is used for reading program from memorizer, executes following process：
Using linearity test or non-linear detection mode, the multiple terminals according to described running time-frequency resource nonopiate many The upper line number that extension null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals is accessed in location According to, and carry out interference deletion or iterative detection decoding.
The embodiment of the present invention, non-orthogonal multiple access technology is combined with Uplink MIMO technology, fully Using the characteristic in time-frequency domain, encoding domain, power domain and spatial domain etc. for the non-orthogonal multiple access technology, Ke Yizhi Hold more terminals simultaneous transmission data on identical running time-frequency resource, thus realizing power system capacity or access terminal The lifting of quantity.
Brief description
The method flow diagram that Fig. 1 provides for one embodiment of the invention；
The method flow diagram that Fig. 2 provides for another embodiment of the present invention；
Fig. 3 be PDMA provided in an embodiment of the present invention with MIMO precoding realize block diagram；
The method flow diagram that Fig. 4 provides for another embodiment of the present invention；
The system architecture diagram that Fig. 5 provides for one embodiment of the invention；
Fig. 6 receives and detection process schematic diagram for the base station that one embodiment of the invention provides；
The system architecture diagram that Fig. 7 provides for another embodiment of the present invention；
The schematic device that Fig. 8 provides for one embodiment of the invention；
The terminal structure schematic diagram that Fig. 9 provides for one embodiment of the invention；
The schematic device that Figure 10 provides for another embodiment of the present invention；
The architecture of base station schematic diagram that Figure 11 provides for one embodiment of the invention.
Specific embodiment
The core of the present invention is non-orthogonal multiple access technology to be combined with Uplink MIMO technology, fully Using the characteristic in time-frequency domain, encoding domain, power domain and spatial domain for the non-orthogonal multiple access technology, can support More terminal simultaneous transmission data on identical running time-frequency resource, thus realize power system capacity or accessing user's end The lifting of terminal number amount.
The embodiment of the present invention will with pattern segmentation multiple access access (Pattern Division Multiple Access, PDMA) illustrate as a example technology.It should be pointed out that other non-orthogonal multiple access technologies are also suitable In the embodiment of the present invention.
PDMA is a kind of new non-orthogonal multiple access technology, and it utilizes the asymmetry of multiuser channel, Do not wait sparse coding matrix and the coded modulation combined optimization scheme of order of diversity by designing multi-user, when realizing The non-orthogonality signal superposed transmission of the various dimensions such as frequency domain, power domain and spatial domain, obtain higher multiuser multiplexing and Diversity gain.
PDMA can be mapped in multiple signal domain such as the encoding domain of running time-frequency resource, power domain, spatial domain, Form the non-orthogonal feature pattern of dividing multi-user.
For encoding domain, its basic conception is that multiple terminals utilizes PDMA pattern square on identical running time-frequency resource The row (i.e. PDMA pattern vector) of battle array send respective data to be superimposed；
For power domain, its basic conception is but that multiple terminals takies identical running time-frequency resource sends work(using different Rate is overlapped sending respective data；
For spatial domain, its basic conception is that the data message of multiple terminals is overlapped sending out on the multiple antennas of space Send.
Below in conjunction with the accompanying drawings the embodiment of the present invention is described in detail.
Fig. 1 show the sending method of the upstream data of end side provided in an embodiment of the present invention, specifically includes Following operation：
Step 100, use upstream data corresponding PDMA pattern vector, to above-mentioned through chnnel coding Upstream data carries out PDMA coded modulation.
Wherein, it is referred to as the modulation symbol of PDMA pattern vector through the code modulated upstream data of PDMA, Hereinafter referred to as modulation symbol.
Step 110, power adjustment is carried out to modulation symbol.
Step 120, power is adjusted after modulation symbol be transmitted layer mapping.
Step 130, prelisted using the corresponding multiple-input and multiple-output (MIMO) of above-mentioned PDMA pattern vector Code matrix, carries out MIMO precoding to the modulation symbol through overpower adjustment and transport layer mapping.
Wherein, work as rank=1, PDMA pattern vector is corresponding to be MIMO precoding vector, i.e. MIMO Precoding vector is special MIMO pre-coding matrix.When transmitting antenna number is 1, MIMO prelists Code matrix deteriorates to scalar 1 further.
Step 140, according to above-mentioned PDMA pattern vector instruction, to right through MIMO precoding Time-frequency resource maps should be carried out in the modulation symbol of each antenna port.
Step 150, according to the modulation symbol after time-frequency resource maps, generate the orthogonal frequency of each antenna port Divide multiplexing (OFDM) symbol and send.
The embodiment of the present invention, non-orthogonal multiple access technology is combined with Uplink MIMO technology, fully Using the characteristic in time-frequency domain, encoding domain, power domain and spatial domain etc. for the non-orthogonal multiple access technology, Ke Yizhi Hold more terminals simultaneous transmission data on identical running time-frequency resource, thus realizing power system capacity or access terminal The lifting of quantity.
In above-mentioned steps 110, both can be according to the instruction distribution power of base station, to PDMA pattern vector Modulation symbol carries out power adjustment it is also possible to independently determine distribution power, to PDMA pattern Vector Modulation Symbol carries out power adjustment.
No matter which kind of power distribution mode, in order to improve power system capacity further, can be corresponding to different The upstream data of the pattern vector that non-orthogonal multiple accesses distributes different power, by the number of different power According to superposition to improve detection performance.It is of course also possible to be the pattern accessing corresponding to different non-orthogonal multiple The upstream data distribution identical power of vector.
Based on above-mentioned any means embodiment, in the embodiment of the present invention, can be terminal distribution by base station PDMA pattern vector is it is also possible to select used PDMA pattern vector by terminal is autonomous.
Optionally, upstream data and the corresponding relation of PDMA pattern vector meet following at least one：
Channel space correlation is higher than the corresponding different PDMA pattern of upstream data of the terminal of given threshold Vector；
The upstream data that channel space correlation is less than the terminal of given threshold corresponds to identical DPMA pattern Vector or different PDMA pattern vectors；
The pattern vector that the one or more non-orthogonal multiple of upstream data correspondence of one terminal accesses.
That is, for scheduling business, on same running time-frequency resource, base station should be the number of each terminal as far as possible According to the different PDMA pattern vector of distribution, and the upstream data of a terminal corresponds to one or more anon-normal Hand over the pattern vector that multiple access accesses.But the data working as transmission is more and PDMA pattern vector quantities are not enough When, the data distribution PDMA pattern vector that can be each terminal according to following criterion：Channel space is related Property higher than two of given threshold even more terminals, it is preferred to use different PDMA pattern vectors passes Defeated upstream data.Channel space correlation is less than two even more terminals of given threshold, it is possible to use Identical PDMA pattern vector transmission upstream data.
In order to carry out channel estimation exactly it is preferred that all transport layers of all terminals are using mutually orthogonal Demodulated reference signal (DMRS).
Wherein it is possible to by base station for terminal instruction DMRS resource it is also possible to DMRS is randomly choosed by terminal Resource.
Accordingly, in step 120, the PDMA pattern Vector Modulation symbol after power is adjusted is mapped to n Individual transport layer, n is the maximum row weight of the pattern matrix constituting not less than the PDMA pattern vector of this terminal； Wherein, the modulation symbol of the pattern vector of a non-orthogonal multiple access is mapped to one or more transport layers.
Wherein, in often going in matrix, value is the row weight that 1 element number is this row.The maximum row of row weight Row is the maximum row weight of this matrix again.
Below in conjunction with the accompanying drawings 2, the end side that PDMA technology is combined with MIMO technology sends upper line number According to flow process illustrate.
For a terminal, need in identical if there are two even plural upstream datas Send in frequency resource, then as the handling process of data 1 data 2 in Fig. 2, can be with parallel processing.If Only one of which upstream data sends, then in Fig. 2, dotted box portion can omit.Specifically：
Upstream data first passes around chnnel coding；
PDMA coded modulation is carried out to the upstream data through chnnel coding, wherein, both can be using biography The modulation constellation mapping of system is it is also possible to carry out new coded modulation according to the PDMA pattern vector using；
Power adjustment is carried out to the PDMA pattern Vector Modulation symbol obtaining after PDMA coded modulation, this In embodiment, the different upstream datas of transmission on identical running time-frequency resource, using different power；
PDMA pattern Vector Modulation symbol after power is adjusted is mapped to one or more transport layers (layer), total transmission number of plies is L, can be mapped according to the existing rule of LTE；
Modulation symbol after mapping layer by layer is carried out MIMO precoding, such as Fig. 3 through overpower adjustment and transmission Shown：It needs to be determined that the precoding vector (rank=1) that different PDMA pattern vectors is used or matrix (rank>1), using identical MIMO precoding in the corresponding multiple frequency domain resource of PDMA pattern vector Vector or matrix, now in Fig. 3The corresponding multiple frequency domain moneys of PDMA pattern vector Source can also use different MIMO precoding vectors or matrix.Here MIMO pre-coding matrix comprises The pre-coding matrix of all MIMO transmission patterns specified in LTE；
Carry out time-frequency resource maps to through MIMO precoding corresponding to the signal of each antenna port： According to the instruction of PDMA pattern vector, " 1 " represent data be mapped to PDMA pattern vector corresponding when On the corresponding running time-frequency resource of frequency resource group, " 0 " expression does not map；
OFDM symbol generates：Generate the OFDM symbol of each antenna port.
Wherein, the PDMA BTU Basic Transmission Unit that the upstream data of terminal uses (includes the time-frequency money taking Source, PDMA pattern vector, up DMRS etc.) can be indicated by base station or terminal oneself decision. One piece of running time-frequency resource selects PDMA BTU Basic Transmission Unit, generally meets the following rule：
A) upstream data of a terminal uses the corresponding basic transmission of one or more PDMA pattern vectors Unit.The upstream data belonging to multiple transport layers of a PDMA pattern vector uses identical PDMA The corresponding BTU Basic Transmission Unit of pattern vector.
B) the close multiple terminals of channel space characteristic are using the different corresponding basic biographies of PDMA pattern vector Defeated unit.
C) when the number of terminals of needs transmission is very many, the relatively low multiple terminals of channel space correlation can make BTU Basic Transmission Unit with identical PDMA pattern vector.
In order to carry out channel estimation exactly it is preferred that all transport layers of all terminals are using mutually orthogonal Demodulated reference signal DMRS.The different up DMRS of base station instruction, or terminal random selection is up DMRS.
MIMO precoding vector or matrix that the corresponding upstream data of one PDMA pattern vector is used Can determine by following rule：
A) a PDMA pattern vector can correspond to one or more transport layers (rank).
B) when a terminal is using multiple PDMA pattern vector it is meant that multiple PDMA codings will be had Modulated data blocks.The maximum row assuming the pattern matrix that multiple PDMA pattern vectors are constituted is again for n, then At least need n transport layer.
Fig. 4 show the method for reseptance of the upstream data of base station side provided in an embodiment of the present invention, specifically includes Following operation：
Step 400, according to channel estimation results, reconstruct the PDMA extension of the multiple terminals of a running time-frequency resource Null tone equivalent channel matrix, the multiple terminals of this running time-frequency resource PDMA extension null tone equivalent channel matrix by Take the PDMA extension null tone equivalent channel matrix of each terminal that upstream data is sent on this running time-frequency resource Constitute, each described terminal is whole by this in the PDMA extension null tone equivalent channel matrix of this running time-frequency resource The mimo channel of the corresponding multiple frequency domain resource of upstream data that end sends in this running time-frequency resource estimates structure Become, the corresponding multiple frequency domain resource of described upstream data are sweared by this upstream data corresponding PDMA pattern Amount instruction.
Step 410, the PDMA extension null tone equivalent channel matrix inspection according to the multiple terminals of above-mentioned running time-frequency resource Survey the upstream data that multiple terminals send on this running time-frequency resource.
The embodiment of the present invention, nonopiate uplink multiple access technology is combined with Uplink MIMO technology, Make full use of the characteristics such as PDMA time-frequency domain, encoding domain, power domain and spatial domain, more ends can be supported End simultaneous transmission data on identical running time-frequency resource, thus realize carrying of power system capacity or number of access terminals Rise.
The receiver context of detection of base station, also increases in addition to the corresponding frequency domain dimension of PDMA pattern vector Add the spatial domain dimension of multiple antennas, multiuser detection needs are combined with frequency domain using the spatial domain of reconstruct PDMA extends space frequency channel matrix, and dimension increases.Space frequency channel matrix is extended based on multi-user PDMA, Base station receiver can using linearity test (such as MMSE) or non-linear detection (such as belief propagation, ), and carry out interference and delete (SIC) or iterative detection decoding (IDD) BP.
Optionally, step 400 can be specifically：According to the channel estimation results on one piece of running time-frequency resource, The PDMA extension null tone that mode according to first frequency domain spatial domain again reconstructs the multiple terminals of one piece of running time-frequency resource is equivalent Channel matrix；Can also be according to the channel estimation results on this block running time-frequency resource, according to first spatial domain frequency again The mode in domain reconstructs the PDMA extension null tone equivalent channel matrix of the multiple terminals of one piece of running time-frequency resource.
Optionally, the method also includes：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
As a example carrying out non-orthogonal multiplexing transmission with up 4 terminals using PDMA pattern matrix [3,7] below, come Carry out above-mentioned transmitting terminal and the illustration of receiving terminal scheme.Assume that all there are 2 antennas terminal and base station, that is, respectively Terminal is 2 × 2 Uplink MIMO system.In being described below, lowercase bold letter representation column vector, greatly Write bold-type letter representing matrix, " 1 " is all 1's matrix or vector, common alpha is scalar,For Kronecker amasss, and " ο " is the corresponding element product of matrix or vector, and subscript " (u) " represents terminal u.
Assume that terminal 1 and terminal 2 are close in channel space characteristic, spatial beams can be classified as (beam), different PDMA pattern vectors should be distributed in base station scheduling as far as possible；Terminal 1 and terminal 4 exist In channel space characteristic relatively far apart, non-adjacent spatial beams can be classified as, different PDMA can be distributed Pattern vector it is also possible to distribute same PDMA pattern vector, particularly number of terminals is more and PDMA In the case that pattern vector is not enough.When exempting from scheduling, different terminals are possibly used identical PDMA Pattern vector, the PDMA BTU Basic Transmission Unit that now each terminal takies should be as far as possible using mutually orthogonal upper Row DMRS resource.
Without loss of generality it is assumed that terminal 1 have selected PDMA pattern matrix the 2nd arranges corresponding pattern vectorTerminal 3 have selected PDMA pattern matrix the 5th, 6 and arranges corresponding pattern vectorAs shown in Figure 5.Terminal 2, because close in spatial character with terminal 1, therefore needs To select the pattern vectors different from terminal 1 for it is assumed here that being assigned with PDMA pattern for terminal 2 Matrix the 7th arranges corresponding pattern vectorTerminal 4 is because with terminal 1 in channel space characteristic Upper difference farther out, therefore can select and terminal 1 identical pattern vector for it, and the present embodiment is terminal 4 Have selected PDMA pattern matrix the 2nd and arrange corresponding pattern vector
Assume hij,fRepresent the channel response of the terminal transmitting antenna j in frequency f to reception antenna i, then Between transmitting antenna j to reception antenna i, frequency domain channel vector is
So, space frequency channel matrix can be expressed as
For the sake of subsequently facilitating,
WhereinBe on subcarrier f all transmitting antennas to the channel vector of reception antenna i.
Using PDMA pattern vector HPDMAK, after (), PDMA space frequency channel matrix can be expressed as：
Assume that multiple frequency domain resource that terminal sends shared by the BTU Basic Transmission Unit that upstream data uses use Identical MIMO pre-coding matrix or vector are W or w, element w thereinjlFor transport layer l to transmitting sky The MIMO precoding weights of line j.Corresponding to PDMA pattern vector HPDMAThe coded modulation symbol s warp of (k) The null tone crossed MIMO precoding and PDMA time-frequency resource maps and obtained by space frequency channel receives letter Number vector writing：
It is assumed as above, terminal 1 have selected PDMA pattern matrix the 2nd and arranges corresponding pattern vector [1 1 0]T, The matrix that its pattern vector is constituted is still column vector, and the maximum row weight maximum of the number of row 1 (i.e. often) is 1, therefore at least need 1 transport layer (>1 transport layer still can transmit this PDMA coding tune Symbol stream processed)；Terminal 3 have selected PDMA pattern matrix the 5th, 6 and arranges corresponding pattern vector [1 00；0 1 0]T, the matrix dimension that its pattern vector is constituted is 3*2, and maximum row is 1 again, therefore at least needs 1 biography Defeated layer (>1 transport layer still can transmit this PDMA coded modulation symbol stream).
Up DMRS on the corresponding BTU Basic Transmission Unit of each transport layer sending upstream data for the terminal The MIMO precoding processing process of symbol is consistent with the MIMO precoding processing process of data symbol.Base The PDMA that station receives all transmission upstream datas on one piece of running time-frequency resource for the terminal transmits substantially Carry out channel estimation, it is multiple that the PDMA pattern vector that this terminal is used takies after the DMRS of unit The mimo channel estimated result combination of frequency domain constitutes the PDMA extension null tone equivalent channel matrix of this user. Then the PDMA extension null tone equivalent channel matrix of all terminals is together to form all terminals PDMA extends null tone equivalent channel matrix.
One terminal PDMA extension null tone equivalent channel matrix compound mode on one piece of running time-frequency resource can To be：
Can first frequency domain spatial domain again：The frequency that all PDMA pattern vectors between each pair of dual-mode antenna take Domain channel is arranged in order.
Can also first spatial domain frequency domain again：The mimo channel of each frequency domain that PDMA pattern vector takies is successively Arrangement.
The PDMA extension null tone equivalent channel of this terminal spatial domain compound mode with after first frequency domain is (subsequently equal It is described with the compound mode in first frequency domain spatial domain again)：
It should be noted that each element that PDMA extends in null tone equivalent channel matrix is up DMRS channel estimation results.These DMRS channel estimation results constitute PDMA according to two kinds of compound modes Extension null tone equivalent channel.
Terminal 1：The MIMO precoding vector of rank 1 isPDMA pattern vector isSo its PDMA null tone equivalent channel is：
It should be noted thatBe this user terminal use PDMA BTU Basic Transmission Unit send upper The channel estimation results of row DMRS.
Terminal 2：The MIMO precoding vector of rank 2 isPDMA Pattern vector isNow the data of a PDMA pattern vector is transmitted through 2 transport layers, The data volume of transmission doubles.So its PDMA null tone equivalent channel is：
Terminal 3：According to aforementioned rule, terminal 3 uses 2 PDMA pattern vectors, and PDMA pattern is sweared Measure and beAnd the maximum row of the encoder matrix of 2 PDMA pattern vectors formation selecting It is 1, then can be using the MIMO precoding vector of the rank 1 of 1 transport layer again Now using 2 PDMA pattern vectors and each PDMA pattern vector data passes through 1 transport layer Defeated, the data volume of terminal 3 transmission doubles.Using rank 1 MIMO precoding vector when the 1st The corresponding PDMA null tone equivalent channel of individual PDMA pattern vector is：
The corresponding PDMA null tone equivalent channel of 2nd PDMA pattern vector is：
The MIMO pre-coding matrix that the rank 2 of 2 transport layers may also be employed isNow the corresponding PDMA null tone of the 1st PDMA pattern vector is equivalent Channel is：
The corresponding PDMA null tone equivalent channel of 2nd PDMA pattern vector is：
Terminal 4：The MIMO precoding vector of rank 1 isPDMA pattern vector isSo its PDMA null tone equivalent channel is
The reception of base station receiving terminal and detection process are as shown in Figure 6.Base station connects according to all reception antennas first The up DMRS of each terminal received carries out channel estimation, then needs the PDMA figure using according to each terminal Sample vector reconstruction is used for the PDMA extension space frequency channel matrix of all terminals of multiuser detection.Eventually When end 3 uses rank 1 pre-coding matrix, PDMA extension space frequency channel matrix can be write：
When terminal 3 uses rank 2 pre-coding matrix, PDMA extension space frequency channel matrix can be write：
If the MIMO pre-coding matrix of each frequency domain resource or vector are different, terminal 3 is prelisted using rank 2 During code matrix, PDMA extension space frequency channel matrix can be write：
Each of which itemIt is all that the PDMA BTU Basic Transmission Unit using from each user terminal sends The channel estimation results of up DMRS..It is noted that the corresponding PDMA of MIMO precoding of rank n Columns in extension space frequency channel matrix is n, and at least corresponding 1 row of each PDMA pattern vector.Example Columns as corresponding in terminal 2 is 2, and each correspondence 1 of two PDMA pattern vectors of terminal 3 arranges.
The dimension that PDMA extends space frequency channel matrix is (NRK)×NS, wherein NRFor base station reception antenna number, K is the line number of PDMA pattern vector, NSThe transmission number of plies of all terminals transmitted for this.Base station connects Receipts machine can adopt nonlinear detector BP-IDD, wherein terminal 2 channel coding blocks corresponding Individual PDMA pattern vector, using 2 transport layers, needs BP output result when carrying out IDD 2nd, 3 row carry out channel decoding as an entirety.As (NRK)≥NSWhen can also adopt linear detector (example As MMSE) and carry out SIC.
It is base station reception antenna number N that traditional Uplink MIMO completely sends the transmission number of pliesR, PDMA can be defined System overload rate after being combined with Uplink MIMO is NS/(NRK).The Overflow RateHT of the present embodiment is 6/ (2 × 3)=1.
As a example carrying out non-orthogonal multiplexing transmission with up 9 terminals using PDMA pattern matrix [3,7], terminal 1 All identical with a upper embodiment to all configurations of terminal 4, parameter and PDMA null tone equivalent channel formula.
It is as shown in Figure 7 that increased terminal 5 arrives terminal 9.Wherein terminal 5,6,9 is all using rank's 1 MIMO precoding vector, terminal 7,8 uses the MIMO pre-coding matrix of rank 2.Terminal 8 and end End 6 uses identical PDMA pattern vector, and terminal 9 and terminal 2 use identical PDMA pattern to swear Amount.
Assume that terminal 5 is 2 transmitting antennas to terminal 8, terminal 9 has 1 transmitting antenna.Terminal 5 It is respectively to the pre-coding matrix of terminal 9 or vector And w(9)=[1].
When terminal 3 uses rank 1 pre-coding matrix, multiple frequency domain resource use identical MIMO precoding When PDMA extension space frequency channel matrix can write：
The Overflow RateHT of the present embodiment is 13/ (2 × 3) ≈ 2.17, shows that PDMA is permissible with the combination of Uplink MIMO Realize power system capacity or the lifting of number of access terminals.
Based on the inventive concept same with method, embodiments provide a kind of transmission dress of upstream data Put, as shown in figure 8, including：
Non-orthogonal multiple accesses code modulation module 801, many for being split using the corresponding pattern of upstream data The pattern vector that location access technology non-orthogonal multiple accesses, is carried out to the described upstream data through chnnel coding Non-orthogonal multiple accesses coded modulation, accesses code modulated upstream data through non-orthogonal multiple and is referred to as anon-normal Hand over the pattern Vector Modulation symbol that multiple access accesses；
Power regulation module 802, for carrying out power adjustment to described modulation symbol；
Layer mapping block 803, is transmitted layer mapping for the modulation symbol after adjusting power；
MIMO precoding module 804, the pattern vector for being accessed using described non-orthogonal multiple is corresponding Multiple-input and multiple-output MIMO pre-coding matrix, to the modulation symbol through overpower adjustment and transport layer mapping Carry out MIMO precoding；
Resource mapping module 805, the instruction of the pattern vector for accessing according to described non-orthogonal multiple, right Carry out time-frequency resource maps through MIMO precoding corresponding to the modulation symbol of each antenna port；
OFDM symbol generation module 806, every for according to the modulation symbol after time-frequency resource maps, generating The orthogonal frequency division multiplex OFDM symbol of individual antenna port simultaneously sends.
It is the power difference of the upstream data distribution of the pattern vector accessing corresponding to different non-orthogonal multiple； Or, it is the power phase of the upstream data distribution of the pattern vector accessing corresponding to different non-orthogonal multiple With.
Based on above-mentioned any device embodiment, optionally, it is that the power of different upstream data distribution is different； Or, it is that the power of different upstream data distribution is identical.
Channel is based on above-mentioned any device embodiment, optionally, the figure that upstream data is accessed with non-orthogonal multiple The corresponding relation of sample vector meets following at least one：
Channel space correlation is higher than the corresponding different non-orthogonal multiple of upstream data of the terminal of given threshold The pattern vector accessing；
The upstream data that spatial coherence is less than the terminal of given threshold corresponds to identical DPMA pattern vector Or the pattern vector that different non-orthogonal multiple accesses；
The pattern vector that the one or more non-orthogonal multiple of upstream data correspondence of one terminal accesses.
Optionally, all transport layers of all terminals use mutually orthogonal demodulated reference signal DMRS.
Optionally, described layer mapping block is used for：
Modulation symbol after power is adjusted is mapped to n transport layer, and described n is non-not less than this terminal The maximum row weight of the pattern matrix that the pattern vector that orthogonal multiple access accesses is constituted；Wherein, a non-orthogonal multiple The modulation symbol of the pattern vector accessing is mapped to one or more transport layers.
Based on above-mentioned any device embodiment, optionally, described power regulation module is used for：
Carry out power distribution according to base station instruction or autonomous determination, the pattern arrow that described non-orthogonal multiple is accessed Amount modulation symbol carries out power adjustment.
Based on the inventive concept same with method, the embodiment of the present invention also provides a kind of terminal, as shown in figure 9, Including：
Processor 900, for reading the program in memorizer 920, executes following process：
The pattern vector being accessed using the corresponding non-orthogonal multiple of upstream data, to through described in chnnel coding Upstream data carries out non-orthogonal multiple and accesses coded modulation, accesses code modulated up through non-orthogonal multiple Data is referred to as the modulation symbol of the pattern vector that non-orthogonal multiple accesses；
Power adjustment is carried out to described modulation symbol；
Modulation symbol after power is adjusted is transmitted layer mapping；
The corresponding multiple-input and multiple-output MIMO of the pattern vector being accessed using described non-orthogonal multiple is prelisted Code matrix, carries out MIMO precoding to the modulation symbol through overpower adjustment and transport layer mapping；
The instruction of the pattern vector accessing according to described non-orthogonal multiple, to right through MIMO precoding Time-frequency resource maps should be carried out in the modulation symbol of each antenna port；
According to the modulation symbol after time-frequency resource maps, generate the OFDM of each antenna port OFDM symbol is simultaneously sent by transceiver 910；
Transceiver 910, for receiving and sending data under the control of processor 900；
Memorizer 920, for preserving the data being used during processor 900 execution operation.
Wherein, in fig .9, bus architecture can include bus and the bridge of any number of interconnection, specifically by One or more processors and the various electrical chains of the memorizer of memorizer 920 representative that processor 900 represents It is connected together.Bus architecture can also be by such as ancillary equipment, manostat and management circuit or the like Various other circuit link together, and these are all it is known in the art, therefore, no longer it are entered herein Row further describes.EBI provides interface.Transceiver 910 can be multiple element, that is, include sending Machine and receiver, provide the unit for communicating over a transmission medium with various other devices.For different User equipment, user interface 930 can also be and external interior can connect the interface needing equipment, the equipment of connection Including but not limited to keypad, display, speaker, mike, stick etc..
Processor 900 is responsible for bus architecture and common process, and memorizer 920 can store processor 900 data being used in execution operation.
Optionally, when the pattern Vector Modulation symbol described non-orthogonal multiple being accessed carries out power adjustment, place Reason device reading program from memorizer, executes following process：
Indicate according to base station or independently determine distribution power, to the pattern vector that described non-orthogonal multiple accesses Modulation symbol carries out power adjustment.
Based on above-mentioned any terminal embodiment, optionally, it is the figure accessing corresponding to different non-orthogonal multiple The power of the upstream data distribution of sample vector is different；Or, it is to access corresponding to different non-orthogonal multiple The power of the upstream data distribution of pattern vector is identical.
Based on above-mentioned any terminal embodiment, optionally, the pattern arrow that upstream data is accessed with non-orthogonal multiple The corresponding relation of amount meets following at least one：
Channel space correlation is higher than the corresponding different non-orthogonal multiple of upstream data of the terminal of given threshold The pattern vector accessing；
The upstream data that channel space correlation is less than the terminal of given threshold corresponds to identical non-orthogonal multiple The pattern vector accessing or the pattern vector of different non-orthogonal multiple access；
The pattern vector that the one or more non-orthogonal multiple of upstream data correspondence of one terminal accesses.
Optionally, all transport layers of all terminals use mutually orthogonal demodulated reference signal DMRS.
Optionally, when the modulation symbol after power being adjusted is transmitted layer mapping, processor is used for from storage Reading program in device, executes following process：
Modulation symbol after power is adjusted is mapped to n transport layer, and described n is non-not less than this terminal The maximum row weight of the pattern matrix that the pattern vector that orthogonal multiple access accesses is constituted；Wherein, a non-orthogonal multiple The modulation symbol of the pattern vector accessing is mapped to one or more transport layers.
Based on the inventive concept same with method, the embodiment of the present invention also provides a kind of transmission of upstream data to fill Put, as shown in Figure 10, including：
Channel matrix reconstructed module 1001, the non-orthogonal multiple for reconstructing the multiple terminals of one piece of running time-frequency resource connects Enter to extend null tone equivalent channel matrix, the non-orthogonal multiple of the multiple terminals of described running time-frequency resource accesses extension null tone Equivalent channel matrix is by the non-orthogonal multiple taking each terminal sending upstream data on described running time-frequency resource Access extension null tone equivalent channel to constitute, each terminal described accesses in the non-orthogonal multiple of described running time-frequency resource The corresponding multiple frequencies of upstream data that extension null tone equivalent channel is sent in described running time-frequency resource by this terminal The mimo channel of domain resource is estimated to constitute, and the corresponding multiple frequency domain resource of described upstream data are by described The pattern vector instruction that the corresponding non-orthogonal multiple of row data accesses；
Upstream data detection module 1002, the non-orthogonal multiple for the multiple terminals according to described running time-frequency resource connects Enter to extend the upstream data that null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals.
Optionally, described channel matrix reconstructed module is used for：
According to channel estimation results, the mode according to first frequency domain spatial domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix；Or,
According to channel estimation results, the mode according to first spatial domain frequency domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix.
Based on above-mentioned any device embodiment, optionally, also include pattern vector distribute module, be used for：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
Based on above-mentioned any device embodiment, optionally, described upstream data detection module is used for：
Using linearity test or non-linear detection mode, the multiple terminals according to described running time-frequency resource nonopiate many The upper line number that extension null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals is accessed in location According to, and carry out interference deletion or iterative detection decoding.
Based on the inventive concept same with method, the embodiment of the present invention also provides a kind of base station, as Figure 11 institute Show, including：
Processor 1100, for reading program from memorizer 1120, executes following process：
The non-orthogonal multiple of the multiple terminals of one piece of running time-frequency resource of reconstruct accesses extension null tone equivalent channel matrix, institute State running time-frequency resource multiple terminals non-orthogonal multiple access extension null tone equivalent channel matrix by taking described when The non-orthogonal multiple sending each terminal of upstream data in frequency resource accesses extension null tone equivalent channel composition, Each terminal described accesses extension null tone equivalent channel by this terminal in the non-orthogonal multiple of described running time-frequency resource The mimo channel of the corresponding multiple frequency domain resource of upstream data sending in described running time-frequency resource estimates structure Become, the corresponding multiple frequency domain resource of described upstream data are accessed by the corresponding non-orthogonal multiple of described upstream data Pattern vector instruction；
The non-orthogonal multiple of the multiple terminals according to described running time-frequency resource accesses extension null tone equivalent channel matrix inspection Survey the upstream data of the transmission in described running time-frequency resource for multiple terminals；
Transceiver 1110, for receiving and sending data under the control of processor 1100；
Memorizer 1120, for preserving the data being used during processor 1100 execution operation.
Wherein, in fig. 11, bus architecture can include bus and the bridge of any number of interconnection, specifically The various electricity of the memorizer that the one or more processors being represented by processor 1100 and memorizer 1120 represent Road links together.Bus architecture can also by ancillary equipment, manostat and management circuit etc. it Various other circuit of class link together, and these are all it is known in the art, therefore, no longer right herein It is described further.EBI provides interface.Transceiver 1110 can be multiple element, that is, wrap Include transmitter and receiver, the unit for being communicated with various other devices over a transmission medium is provided.Process Device 1100 is responsible for bus architecture and common process, and memorizer 1120 can store processor 1100 The data being used in execution operation.
Optionally, according to channel estimation results, the non-orthogonal multiple of the multiple terminals of one running time-frequency resource of reconstruct connects When entering to extend null tone equivalent channel matrix, processor is used for reading program from memorizer, executes following process：
According to channel estimation results, the mode according to first frequency domain spatial domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix；Or,
According to channel estimation results, the mode according to first spatial domain frequency domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix.
Based on above-mentioned any base station embodiment, optionally, processor is additionally operable to reading program from memorizer, Execute following process：
Also include pattern vector distribute module, be used for：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
Based on above-mentioned any base station embodiment, optionally, the multiple terminals according to described running time-frequency resource is nonopiate Multiple access accesses the up of the transmission extending the null tone equivalent channel matrix multiple terminals of detection in described running time-frequency resource During data, processor is used for reading program from memorizer, executes following process：
Using linearity test or non-linear detection mode, the multiple terminals according to described running time-frequency resource nonopiate many The upper line number that extension null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals is accessed in location According to, and carry out interference deletion or iterative detection decoding.
The embodiment of the present invention, non-orthogonal multiple access technology is combined with Uplink MIMO technology, fully Using the characteristic in time-frequency domain, encoding domain, power domain and spatial domain etc. for the non-orthogonal multiple access technology, Ke Yizhi Hold more terminals simultaneous transmission data on identical running time-frequency resource, thus realizing power system capacity or access terminal The lifting of quantity.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter Calculation machine program product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or knot Close the form of the embodiment of software and hardware aspect.And, the present invention can adopt and wherein wrap one or more Computer-usable storage medium containing computer usable program code (including but not limited to disk memory, CD-ROM, optical memory etc.) the upper computer program implemented form.
The present invention is to produce with reference to method according to embodiments of the present invention, equipment (system) and computer program The flow chart of product and/or block diagram are describing.It should be understood that can by computer program instructions flowchart and / or block diagram in each flow process and/or the flow process in square frame and flow chart and/or block diagram and/ Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embed The processor of formula datatron or other programmable data processing device is to produce a machine so that passing through to calculate The instruction of the computing device of machine or other programmable data processing device produces for realizing in flow chart one The device of the function of specifying in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or other programmable datas can be guided to process and set So that being stored in this computer-readable memory in the standby computer-readable memory working in a specific way Instruction produce and include the manufacture of command device, the realization of this command device is in one flow process or multiple of flow chart The function of specifying in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes Obtain and series of operation steps is executed on computer or other programmable devices to produce computer implemented place Reason, thus the instruction of execution is provided for realizing in flow chart one on computer or other programmable devices The step of the function of specifying in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base This creative concept, then can make other change and modification to these embodiments.So, appended right will Ask and be intended to be construed to including preferred embodiment and fall into being had altered and changing of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprise these changes and modification.

Claims (18)

1. a kind of sending method of upstream data is it is characterised in that include：
The pattern vector being accessed using the corresponding non-orthogonal multiple of upstream data, to through described in chnnel coding Upstream data carries out non-orthogonal multiple and accesses coded modulation, accesses code modulated up through non-orthogonal multiple Data is referred to as the modulation symbol of the pattern vector that non-orthogonal multiple accesses；
Power adjustment is carried out to described modulation symbol；
Modulation symbol after power is adjusted is transmitted layer mapping；
The corresponding multiple-input and multiple-output MIMO of the pattern vector being accessed using described non-orthogonal multiple is prelisted Code matrix, carries out MIMO precoding to the modulation symbol through overpower adjustment and transport layer mapping；
The instruction of the pattern vector accessing according to described non-orthogonal multiple, to right through MIMO precoding Time-frequency resource maps should be carried out in the modulation symbol of each antenna port；
According to the modulation symbol after time-frequency resource maps, generate the OFDM of each antenna port OFDM symbol simultaneously sends.
2. method according to claim 1 is it is characterised in that be corresponding to different nonopiate many The power of the upstream data distribution of the pattern vector that location is accessed is different；Or, it is corresponding to different nonopiate The power of the upstream data distribution of the pattern vector that multiple access accesses is identical.
3. method according to claim 1 is it is characterised in that all transport layers of all terminals make With mutually orthogonal demodulated reference signal DMRS.
4. method according to claim 1 it is characterised in that described power is adjusted after modulation Symbol is transmitted layer mapping, including：
Modulation symbol after power is adjusted is mapped to n transport layer, and described n is non-not less than this terminal The maximum row weight of the pattern matrix that the pattern vector that orthogonal multiple access accesses is constituted；Wherein, a non-orthogonal multiple The modulation symbol of the pattern vector accessing is mapped to one or more transport layers.
5. the method according to any one of Claims 1 to 4 it is characterised in that described to described modulation Symbol carries out power adjustment, including：
Carry out power distribution according to base station instruction or autonomous determination, the figure to described non-orthogonal multiple access technology Sample Vector Modulation symbol carries out power adjustment.
6. a kind of method of reseptance of upstream data is it is characterised in that include：
According to channel estimation results, the non-orthogonal multiple reconstructing the multiple terminals of one piece of running time-frequency resource accesses extension sky Frequency equivalent channel matrix, the non-orthogonal multiple of the multiple terminals of described running time-frequency resource accesses extension null tone equivalent channel Matrix accesses extension by the non-orthogonal multiple taking each terminal sending upstream data on described running time-frequency resource Null tone equivalent channel is constituted, and each terminal described accesses extension null tone in the non-orthogonal multiple of described running time-frequency resource The corresponding multiple frequency domain resource of upstream data that equivalent channel is sent in described running time-frequency resource by this terminal Mimo channel is estimated to constitute, and the corresponding multiple frequency domain resource of described upstream data are corresponded to by described upstream data Non-orthogonal multiple access pattern vector instruction；
The non-orthogonal multiple of the multiple terminals according to described running time-frequency resource accesses extension null tone equivalent channel matrix inspection Survey the upstream data that multiple terminals send on described running time-frequency resource.
7. method according to claim 6 it is characterised in that described according to channel estimation results, The non-orthogonal multiple of the multiple terminals of one piece of running time-frequency resource of reconstruct accesses extension null tone equivalent channel matrix, including：
According to channel estimation results, the mode according to first frequency domain spatial domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix；Or,
According to channel estimation results, the mode according to first spatial domain frequency domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix.
8. the method according to claim 6 or 7 is it is characterised in that the method also includes：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
9. the method according to claim 6 or 7 is it is characterised in that described provide according to described time-frequency The non-orthogonal multiple of the multiple terminals in source accesses extension null tone equivalent channel matrix and detects multiple terminals when described The upstream data of the transmission of frequency resource, including：
Using linearity test or non-linear detection mode, the multiple terminals according to described running time-frequency resource nonopiate many The upper line number that extension null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals is accessed in location According to, and carry out interference deletion or iterative detection decoding.
10. a kind of dispensing device of upstream data is it is characterised in that include：
Non-orthogonal multiple accesses code modulation module, for being accessed using the corresponding non-orthogonal multiple of upstream data Pattern vector, the described upstream data through chnnel coding is carried out non-orthogonal multiple access coded modulation, Access code modulated upstream data through non-orthogonal multiple and be referred to as the pattern vector tune that non-orthogonal multiple accesses Symbol processed；
Power regulation module, for carrying out power adjustment to described modulation symbol；
Layer mapping block, is transmitted layer mapping for the modulation symbol after adjusting power；
MIMO precoding module, how defeated the pattern vector for being accessed using described non-orthogonal multiple is corresponding Enter multi output MIMO pre-coding matrix, the modulation symbol through overpower adjustment and transport layer mapping is carried out MIMO precoding；
Resource mapping module, the instruction of the pattern vector for accessing according to described non-orthogonal multiple, to process The modulation symbol corresponding to each antenna port of MIMO precoding carries out time-frequency resource maps；
OFDM symbol generation module, for according to the modulation symbol after time-frequency resource maps, generating each sky The orthogonal frequency division multiplex OFDM symbol of line end mouth simultaneously sends.
11. devices according to claim 10 are it is characterised in that be corresponding to different nonopiate The power of the upstream data distribution of the pattern vector that multiple access accesses is different；Or, it is corresponding to different anon-normal Hand over the power of the upstream data distribution of the pattern vector of multiple access access identical.
12. devices according to claim 10 are it is characterised in that all transport layers of all terminals Using mutually orthogonal demodulated reference signal DMRS.
13. devices according to claim 10 are it is characterised in that described layer mapping block is used for：
Modulation symbol after power is adjusted is mapped to n transport layer, and described n is non-not less than this terminal The maximum row weight of the pattern matrix that the pattern vector that orthogonal multiple access accesses is constituted；Wherein, a non-orthogonal multiple The modulation symbol of the pattern vector accessing is mapped to one or more transport layers.
14. devices according to any one of claim 10～13 are it is characterised in that described power adjusts Module is used for：
Carry out power distribution according to base station instruction or autonomous determination, the pattern arrow that described non-orthogonal multiple is accessed Amount modulation symbol carries out power adjustment.
A kind of 15. reception devices of upstream data are it is characterised in that include：
Channel matrix reconstructed module, the non-orthogonal multiple for reconstructing the multiple terminals of one piece of running time-frequency resource accesses and expands Exhibition null tone equivalent channel matrix, the non-orthogonal multiple access extension null tone of the multiple terminals of described running time-frequency resource is equivalent Channel matrix is accessed by the non-orthogonal multiple taking each terminal sending upstream data on described running time-frequency resource Extension null tone equivalent channel is constituted, and each terminal described accesses extension in the non-orthogonal multiple of described running time-frequency resource The corresponding multiple frequency domain moneys of upstream data that null tone equivalent channel is sent in described running time-frequency resource by this terminal The mimo channel in source is estimated to constitute, and the corresponding multiple frequency domain resource of described upstream data are by described upper line number The pattern vector instruction accessing according to corresponding non-orthogonal multiple；
Upstream data detection module, the non-orthogonal multiple for the multiple terminals according to described running time-frequency resource accesses expansion Exhibition null tone equivalent channel matrix detects the upstream data of the transmission in described running time-frequency resource for multiple terminals.
16. devices according to claim 15 are it is characterised in that described channel matrix reconstructed module For：
According to channel estimation results, the mode according to first frequency domain spatial domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix；Or,
According to channel estimation results, the mode according to first spatial domain frequency domain again reconstructs the multiple terminals of described running time-frequency resource Non-orthogonal multiple access extension null tone equivalent channel matrix.
17. devices according to claim 15 or 16 divide it is characterised in that also including pattern vector Join module, be used for：
For scheduling business, the upstream data distribution being preferably each terminal on same running time-frequency resource is different non- The pattern vector that orthogonal multiple access accesses, and the upstream data correspondence of a terminal is one or more nonopiate many The pattern vector that location is accessed；If the pattern vector quantities that non-orthogonal multiple accesses cannot meet upstream data, Distribute the pattern vector of non-orthogonal multiple according to the upstream data that following at least one criterion is each terminal：
Channel space correlation is higher than at least two terminals of given threshold, preferentially uses different nonopiate many The pattern vector transmission upstream data that location is accessed；
Channel space correlation is less than at least two terminals of given threshold it is allowed to use identical nonopiate many The pattern vector transmission upstream data that location is accessed.
18. devices according to claim 15 or 16 are it is characterised in that described upstream data detects Module is used for：
Using linearity test or non-linear detection mode, the multiple terminals according to described running time-frequency resource nonopiate many The upper line number that extension null tone equivalent channel matrix detects the transmission in described running time-frequency resource for multiple terminals is accessed in location According to, and carry out interference deletion or iterative detection decoding.
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