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WO2017020680A1 - 一种上行数据的发送方法、接收方法及装置 - Google Patents

一种上行数据的发送方法、接收方法及装置 Download PDF

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Publication number
WO2017020680A1
WO2017020680A1 PCT/CN2016/089197 CN2016089197W WO2017020680A1 WO 2017020680 A1 WO2017020680 A1 WO 2017020680A1 CN 2016089197 W CN2016089197 W CN 2016089197W WO 2017020680 A1 WO2017020680 A1 WO 2017020680A1
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WIPO (PCT)
Prior art keywords
multiple access
orthogonal multiple
uplink data
terminal
frequency
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PCT/CN2016/089197
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English (en)
French (fr)
Inventor
康绍莉
宋扬
秦飞
孙韶辉
任斌
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电信科学技术研究院
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Publication of WO2017020680A1 publication Critical patent/WO2017020680A1/zh

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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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, a receiving method, and a device for transmitting uplink data.
  • MIMO Multiple Input Multiple Output
  • the invention provides a method, a receiving method and a device for transmitting uplink data, so as to solve the problem of how to support more users in the same cell.
  • An embodiment of the present invention provides a method for sending uplink data, including:
  • Pairing the MIMO precoded pair according to the indication of the pattern vector of the non-orthogonal multiple access Time-frequency resource mapping should be performed on the modulation symbols of each antenna port;
  • the orthogonal frequency division multiplexing OFDM symbols of each antenna port are generated and transmitted according to the modulation symbols mapped by the time-frequency resources.
  • the performing power adjustment on the non-orthogonal multiple access access pattern vector modulation symbol comprises:
  • all transport layers of all terminals use mutually orthogonal demodulation reference signals DMRS.
  • the mapping of the power vector adjusted non-orthogonal multiple access access pattern vector modulation symbols to the transport layer includes:
  • n is a maximum line of a pattern matrix not less than a non-orthogonal multiple access pattern vector of the terminal Heavy; wherein the modulation symbols of a non-orthogonal multiple access pattern vector are mapped to one or more transport layers.
  • An embodiment of the present invention provides a method for receiving uplink data, including:
  • the non-orthogonal multiple access access extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource is reconstructed, and the multi-terminal non-orthogonal multiple access of the time-frequency resource extends the space frequency, etc.
  • the effective channel matrix is composed of a non-orthogonal multiple access extended spatial frequency equivalent channel occupying each terminal transmitting the uplink data on the time-frequency resource, and each terminal is non-orthogonal in the time-frequency resource
  • the address access extended space-frequency equivalent channel is composed of MIMO channel estimates of the plurality of frequency domain resources corresponding to the uplink data sent by the terminal in the time-frequency resource, and the plurality of frequency domain resources corresponding to the uplink data are a pattern vector indication of non-orthogonal multiple access corresponding to the uplink data;
  • Space-frequency equivalent channel matrix detection based on non-orthogonal multiple access of multi-terminal access of time-frequency resources
  • the uplink data of the transmission of the time-frequency resources by the plurality of terminals is measured.
  • the non-orthogonal multiple access extended spatial-frequency equivalent channel matrix of the multi-terminal reconstructing a time-frequency resource according to the channel estimation result includes:
  • the non-orthogonal multiple access extension extended space-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource is reconstructed according to the first spatial domain and the frequency domain.
  • the method further includes:
  • the pattern data of different non-orthogonal multiple access access is preferentially allocated to the uplink data of each terminal on the same time-frequency resource, and the uplink data of one terminal corresponds to one or more non-orthogonal multiple access accesses.
  • Pattern vector if the number of pattern vectors of non-orthogonal multiple access cannot satisfy the uplink data, assign a non-orthogonal multiple access pattern vector to the uplink data of each terminal according to at least one of the following criteria:
  • At least two terminals whose channel spatial correlation is lower than a set threshold allow transmission of uplink data using the same non-orthogonal multiple access pattern vector.
  • the non-orthogonal multiple access extended spatial-frequency equivalent channel matrix of the multi-terminal according to the time-frequency resource detects the transmission of the multiple terminals in the time-frequency resource.
  • Upstream data including:
  • Detecting by using a linear detection or a non-linear detection method, the uplink data of the plurality of terminals in the time-frequency resource according to the non-orthogonal multiple access extension extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, and Perform interference cancellation or iterative detection decoding.
  • An embodiment of the present invention provides an apparatus for transmitting uplink data, including:
  • the non-orthogonal multiple access code modulation module is configured to perform non-orthogonal multiple access code modulation on the uplink data that is channel coded by using a pattern vector of non-orthogonal multiple access corresponding to the uplink data.
  • a power adjustment module configured to perform power adjustment on the modulation symbol
  • a layer mapping module configured to perform transmission layer mapping on the power modulated modulation symbol
  • a MIMO precoding module configured to perform MIMO precoding on the power modulated and transport layer mapped modulated symbols by using a multiple input multiple output MIMO precoding matrix corresponding to the pattern vector of the non-orthogonal multiple access;
  • a resource mapping module configured to perform time-frequency resource mapping on the MIMO pre-coded modulation symbols corresponding to each antenna port according to the indication of the non-orthogonal multiple access pattern vector;
  • an OFDM symbol generating module configured to generate and transmit an orthogonal frequency division multiplexing OFDM symbol of each antenna port according to the modulation symbol mapped by the time-frequency resource.
  • the power adjustment module is configured to:
  • the power adjustment is performed on the pattern vector modulation symbols of the non-orthogonal multiple access according to the indication of the base station or the autonomous determination of the allocated power.
  • different powers allocated for uplink data corresponding to different non-orthogonal multiple access access pattern vectors; or, corresponding to different non-orthogonal multiple access access patterns The same power is allocated for the uplink data of the vector.
  • all transport layers of all terminals use mutually orthogonal demodulation reference signals DMRS.
  • the layer mapping module is configured to:
  • n is a maximum row weight of a pattern matrix not less than a non-orthogonal multiple access pattern vector of the terminal; wherein, a non-orthogonal multiple address
  • the modulation symbols of the accessed pattern vector are mapped to one or more transport layers.
  • a terminal is provided in the embodiment of the present invention, including:
  • a processor for reading a program in the memory performing the following process:
  • transceiver for receiving and transmitting data under the control of a processor
  • a memory that holds the data used by the processor to perform operations.
  • the processor when performing power adjustment on the non-orthogonal multiple access access pattern vector modulation symbol, the processor reads the program from the memory, and performs the following process:
  • the power adjustment is performed on the pattern vector modulation symbols of the non-orthogonal multiple access according to the indication of the base station or the autonomous determination of the allocated power.
  • different powers allocated for uplink data corresponding to different non-orthogonal multiple access access pattern vectors; or, corresponding to different non-orthogonal multiple access access patterns The same power is allocated for the uplink data of the vector.
  • all transmission layers of all terminals use mutually orthogonal demodulation reference signals DMRS.
  • the processor is configured to read the program from the memory, and perform the following process:
  • n is a maximum row weight of a pattern matrix not less than a non-orthogonal multiple access pattern vector of the terminal; wherein, a non-orthogonal multiple address
  • the modulation symbols of the accessed pattern vector are mapped to one or more transport layers.
  • An embodiment of the present invention provides an apparatus for receiving uplink data, including:
  • a channel matrix reconstruction module configured to reconstruct a non-orthogonal multiple access extended spatial frequency equivalent channel matrix of a multi-terminal of a time-frequency resource, and a non-orthogonal multiple access extension of the multi-terminal of the time-frequency resource
  • the space-frequency equivalent channel matrix is occupied by non-orthogonal multiple access of each terminal that occupies uplink data on the time-frequency resource Accessing an extended space-frequency equivalent channel, wherein the non-orthogonal multiple access extended spatial-frequency equivalent channel of each time-frequency resource is corresponding to uplink data sent by the terminal in the time-frequency resource MIMO channel estimation of the plurality of frequency domain resources, wherein the plurality of frequency domain resources corresponding to the uplink data are indicated by a pattern vector of non-orthogonal multiple access corresponding to the uplink data;
  • an uplink data detecting module configured to detect, according to the non-orthogonal multiple access access extended space-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, uplink data that is sent by the multiple terminals in the time-frequency resource.
  • the channel matrix reconstruction module is configured to:
  • the non-orthogonal multiple access extension extended space-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource is reconstructed according to the first spatial domain and the frequency domain.
  • a pattern vector distribution module is further configured to:
  • the pattern data of different non-orthogonal multiple access access is preferentially allocated to the uplink data of each terminal on the same time-frequency resource, and the uplink data of one terminal corresponds to one or more non-orthogonal multiple access accesses.
  • Pattern vector if the number of pattern vectors of non-orthogonal multiple access cannot satisfy the uplink data, assign a non-orthogonal multiple access pattern vector to the uplink data of each terminal according to at least one of the following criteria:
  • At least two terminals whose channel spatial correlation is lower than a set threshold allow transmission of uplink data using the same non-orthogonal multiple access pattern vector.
  • the uplink data detection module is configured to:
  • Detecting by using a linear detection or a non-linear detection method, the uplink data of the plurality of terminals in the time-frequency resource according to the non-orthogonal multiple access extension extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, and Perform interference cancellation or iterative detection decoding.
  • a base station is provided in the embodiment of the present invention, including:
  • the frequency equivalent channel is composed of MIMO channel estimation of a plurality of frequency domain resources corresponding to the uplink data sent by the terminal in the time-frequency resource, and the plurality of frequency domain resources corresponding to the uplink data are not corresponding to the uplink data.
  • transceiver for receiving and transmitting data under the control of a processor
  • a memory that holds the data used by the processor to perform operations.
  • the processor when reconstructing a non-orthogonal multiple access of the time-frequency resource and expanding the space-frequency equivalent channel matrix, the processor is configured to read the program from the memory, and perform the following process:
  • the non-orthogonal multiple access extension extended space-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource is reconstructed according to the first spatial domain and the frequency domain.
  • the processor is further configured to read the program from the memory and perform the following process:
  • the pattern data of different non-orthogonal multiple access access is preferentially allocated to the uplink data of each terminal on the same time-frequency resource, and the uplink data of one terminal corresponds to one or more non-orthogonal multiple access accesses.
  • Pattern vector if the number of pattern vectors of non-orthogonal multiple access cannot satisfy the uplink data, assign a non-orthogonal multiple access pattern vector to the uplink data of each terminal according to at least one of the following criteria:
  • At least two terminals whose channel spatial correlation is lower than a set threshold allow transmission of uplink data using the same non-orthogonal multiple access pattern vector.
  • the non-orthogonal multiple access extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource is used to detect uplink data sent by the multiple terminals in the time-frequency resource.
  • the processor is used to read the program from memory, the following process is performed:
  • Detecting by using a linear detection or a non-linear detection method, the uplink data of the plurality of terminals in the time-frequency resource according to the non-orthogonal multiple access extension extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, and Perform interference cancellation or iterative detection decoding.
  • the non-orthogonal multiple access technology is combined with the uplink MIMO technology, and the non-orthogonal multiple access technology is utilized in the time-frequency domain, the coding domain, the power domain, and the airspace.
  • the feature can support more terminals to simultaneously transmit data on the same time-frequency resource, thereby achieving an increase in system capacity or the number of access terminals.
  • FIG. 1 is a schematic flowchart of a method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method according to another embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of an implementation of PDMA and MIMO precoding according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a process of receiving and detecting a base station according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a system according to another embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a device according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the core of the technical solution provided by the embodiment of the present invention is to implement non-orthogonal multiple access technology and uplink
  • the combination of MIMO technology makes full use of the characteristics of non-orthogonal multiple access technology in time-frequency domain, coding domain, power domain and airspace, which can support more terminals to simultaneously transmit data on the same time-frequency resources, thereby realizing system capacity. Or an increase in the number of access user terminals.
  • a PDMA Packet Control Multiple Access
  • PDMA Packet Control Multiple Access
  • other non-orthogonal multiple access techniques are also applicable to embodiments of the present invention.
  • PDMA is a new type of non-orthogonal multiple access technology. It utilizes the asymmetry of multi-user channels to achieve time-frequency domain and power domain by designing a sparse coding matrix and code-modulation joint optimization scheme with multi-user unequal diversity. Multi-dimensional non-orthogonal signals such as airspace are superimposed and transmitted to obtain higher multi-user multiplexing and diversity gain.
  • the PDMA can be mapped on multiple signal domains such as a coding domain, a power domain, and an airspace of a time-frequency resource to form a non-orthogonal feature pattern that distinguishes multiple users.
  • the basic concept is that the multi-terminal uses the columns of the PDMA pattern matrix (ie, the PDMA pattern vector) to superimpose and transmit the respective data on the same time-frequency resource;
  • the basic concept is that multiple terminals occupy the same time-frequency resource but use different transmission powers to superimpose and transmit the respective data;
  • the basic concept is that the data information of the multi-terminal is superimposed and transmitted on the spatial multi-antenna.
  • FIG. 1 is a schematic diagram of a method for sending uplink data on a terminal side according to an embodiment of the present disclosure, which specifically includes the following operations:
  • Step 100 Perform PDMA code modulation on the uplink data that has been channel coded by using a PDMA pattern vector corresponding to the uplink data.
  • the uplink data modulated by the PDMA code is called a modulation symbol of a PDMA pattern vector, hereinafter referred to as a modulation symbol.
  • Step 110 Perform power adjustment on the modulation symbol.
  • Step 120 Perform transmission layer mapping on the power modulated modulation symbols.
  • Step 130 Perform MIMO precoding on the power modulated and transport layer mapped modulation symbols by using the MIMO precoding matrix corresponding to the PDMA pattern vector.
  • the PDMA pattern vector corresponds to a MIMO precoding vector, that is, the MIMO precoding vector is a special MIMO precoding matrix.
  • the MIMO precoding matrix is further degraded to a scalar one.
  • Step 140 Perform time-frequency resource mapping on the MIMO pre-coded modulation symbols corresponding to each antenna port according to the indication of the PDMA pattern vector.
  • Step 150 Generate an OFDM (Orthogonal Frequency Division Multiplex) symbol for each antenna port according to the modulation symbol mapped by the time-frequency resource and transmit the symbol.
  • OFDM Orthogonal Frequency Division Multiplex
  • the non-orthogonal multiple access technology is combined with the uplink MIMO technology, and the characteristics of the non-orthogonal multiple access technology in the time-frequency domain, the coding domain, the power domain, and the airspace are fully utilized, and the A plurality of terminals simultaneously transmit data on the same time-frequency resource, thereby achieving an increase in system capacity or the number of access terminals.
  • power may be allocated according to the instruction of the base station, power adjustment may be performed on the PDMA pattern vector modulation symbol, or the allocated power may be determined autonomously, and power adjustment of the PDMA pattern vector modulation symbol may be performed.
  • different powers may be allocated for uplink data corresponding to different non-orthogonal multiple access pattern vectors, and data integration of different powers is used to improve detection performance.
  • the same power can also be allocated for the uplink data corresponding to the pattern vectors of different non-orthogonal multiple accesses.
  • the PDMA pattern vector may be allocated by the base station to the terminal, or the PDMA pattern vector used by the terminal may be selected by the terminal.
  • the correspondence between the uplink data and the PDMA pattern vector satisfies at least one of the following:
  • the uplink data of the terminal whose channel spatial correlation is higher than the set threshold corresponds to different PDMA pattern vectors
  • the uplink data of the terminal whose channel spatial correlation is lower than the set threshold corresponds to the same PDMA pattern vector or a different PDMA pattern vector;
  • the uplink data of one terminal corresponds to one or more non-orthogonal multiple access access pattern vectors.
  • the base station should allocate different PDMA pattern vectors for each terminal's data on the same block of time-frequency resources, and the uplink data of one terminal corresponds to one or more non-orthogonal multiple access access pattern vectors. .
  • the PDMA pattern vector can be allocated to the data of each terminal according to the following criteria: two or more terminals whose channel spatial correlation is higher than the set threshold, preferably used Different PDMA pattern vectors transmit uplink data. Two or more terminals whose channel spatial correlation is lower than a set threshold may use the same PDMA pattern vector to transmit uplink data.
  • DMRS DeModulation Reference Signal
  • the DMRS resource may be indicated by the base station for the terminal, or may be randomly selected by the terminal.
  • step 120 the power adjusted PDMA pattern vector modulation symbol is mapped to n transport layers, where n is not less than the maximum row weight of the pattern matrix formed by the PDMA pattern vector of the terminal; wherein, one non-orthogonal The modulation symbols of the pattern vector of the address access are mapped to one or more transport layers.
  • the number of elements with a value of 1 in each row in the matrix is the row weight of the row.
  • the row weight of the row with the highest row weight is the maximum row weight of the matrix.
  • the uplink data is first channel coded
  • Performing PDMA code modulation on the channel-coded uplink data where a conventional modulation constellation mapping may be used, or a new coding modulation may be performed according to the used PDMA pattern vector;
  • Power adjustment is performed on the PDMA pattern vector modulation symbols obtained by the PDMA code modulation.
  • different uplink data transmitted on the same time-frequency resource are used with different powers;
  • Time-frequency resource mapping is performed on the MIMO pre-coded signal corresponding to each antenna port: according to the indication of the PDMA pattern vector, "1" indicates that the data is mapped to the corresponding time-frequency resource of the time-frequency resource group corresponding to the PDMA pattern vector, “0” means no mapping;
  • OFDM symbol generation Generate OFDM symbols for each antenna port.
  • the PDMA basic transmission unit (including the occupied time-frequency resource, the PDMA pattern vector, the uplink DMRS, and the like) used by the uplink data of the terminal may be instructed by the base station or determined by the terminal itself. Selecting a PDMA basic transmission unit on a time-frequency resource usually meets the following rules:
  • the uplink data of one terminal uses a basic transmission unit corresponding to one or more PDMA pattern vectors.
  • the uplink data of a plurality of transport layers belonging to one PDMA pattern vector uses basic transmission units corresponding to the same PDMA pattern vector.
  • a plurality of terminals whose channel spatial characteristics are close to each other use basic transmission units corresponding to different PDMA pattern vectors.
  • a plurality of terminals having a lower channel spatial correlation may use the basic transmission unit of the same PDMA pattern vector.
  • all transmission layers of all terminals use mutually orthogonal demodulation reference signals DMRS.
  • the base station indicates different uplink DMRSs, or the terminal randomly selects the uplink DMRS.
  • MIMO precoding vector or matrix used for uplink data corresponding to a PDMA pattern vector It can be determined by the following rules:
  • a PDMA pattern vector may correspond to one or more transport layers.
  • a terminal uses multiple PDMA pattern vectors, it means that there will be multiple PDMA coded modulated data blocks. Assuming that the maximum row weight of the pattern matrix formed by multiple PDMA pattern vectors is n, then at least n transport layers are required.
  • FIG. 4 is a diagram of a method for receiving uplink data on a base station side according to an embodiment of the present disclosure, which specifically includes the following operations:
  • Step 400 Reconstruct a multi-terminal PDMA extended space-frequency equivalent channel matrix of a time-frequency resource according to the channel estimation result, where the multi-terminal PDMA extended space-frequency equivalent channel matrix of the time-frequency resource is occupied by the time-frequency resource a PDMA extended space-frequency equivalent channel matrix of each terminal that transmits uplink data, where each terminal in the PDMA extended space-frequency equivalent channel matrix of the time-frequency resource is sent by the terminal in the time-frequency resource
  • the MIMO channel estimation of the plurality of frequency domain resources corresponding to the data is configured, and the plurality of frequency domain resources corresponding to the uplink data are indicated by a PDMA pattern vector corresponding to the uplink data.
  • Step 410 Detect, according to the PDMA extended space frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, uplink data sent by the multiple terminals on the time-frequency resource.
  • the non-orthogonal uplink multiple access technology is combined with the uplink MIMO technology, and the PDMA time-frequency domain, the coding domain, the power domain, and the airspace are fully utilized to support more terminals in the same time-frequency resource. Data is transmitted simultaneously, thereby increasing the system capacity or the number of access terminals.
  • the base station receiver can use linear detection (such as Minimum Mean Square Error (MMSE)) or nonlinear detection (such as Belief Propagation). SIC (Successive Interference Cancellation) or Iterative Detection and Decoding (IDD).
  • linear detection such as Minimum Mean Square Error (MMSE)
  • nonlinear detection such as Belief Propagation
  • SIC Successessive Interference Cancellation
  • IDD Iterative Detection and Decoding
  • the step 400 may be: reconstructing, according to the channel estimation result on a time-frequency resource, a PDMA extended space-frequency equivalent channel matrix of a multi-terminal of a time-frequency resource according to a frequency domain re-space method;
  • the PDMA extended space-frequency equivalent channel matrix of a multi-terminal of a time-frequency resource may be reconstructed according to the channel estimation result on the time-frequency resource according to the first spatial domain and the frequency domain.
  • the method further includes, for the scheduling service, preferentially assigning different non-orthogonal multiple access access pattern vectors to the uplink data of each terminal on the same time-frequency resource, and the uplink data of one terminal corresponds to one or more Non-orthogonal multiple access pattern vector; if the number of pattern vectors of non-orthogonal multiple access cannot satisfy the uplink data, the non-orthogonal multiple access pattern vector may be allocated to the uplink data of each terminal according to at least one of the following criteria: :
  • At least two terminals whose channel spatial correlation is lower than a set threshold allow transmission of uplink data using the same non-orthogonal multiple access pattern vector.
  • the following example uses the PDMA pattern matrix [3, 7] for non-orthogonal multiplexing transmission as an example to perform the above description of the transmitting end and receiving end schemes. It is assumed that both the terminal and the base station have 2 antennas, that is, each terminal is a 2 ⁇ 2 uplink MIMO system.
  • lowercase bold letters indicate column vectors
  • uppercase bold letters indicate matrix
  • “1” is all 1 matrix or vector
  • ordinary letters are scalar
  • ⁇ is the product of the corresponding element of the matrix or vector
  • the superscript "(u)" represents the terminal u.
  • terminal 1 and the terminal 2 are similar in channel spatial characteristics, and can be classified into a spatial beam.
  • different PDMA pattern vectors should be allocated.
  • Terminal 1 and terminal 4 are far apart in channel space characteristics. Classified as non-adjacent spatial beams, you can assign different PDMA pattern vectors, or you can assign the same PDMA pattern vector, especially if the number of terminals is large and the PDMA pattern vector is not enough.
  • no scheduling different terminals may use the same PDMA pattern vector.
  • the PDMA basic transmission unit occupied by each terminal should use orthogonal uplink DMRS resources as much as possible.
  • the terminal 1 selects the pattern vector corresponding to the second column of the PDMA pattern matrix.
  • Terminal 3 selects the pattern vector corresponding to columns 5 and 6 of the PDMA pattern matrix. As shown in Figure 5. Since the terminal 2 is close in spatial characteristics to the terminal 1, it is necessary to select a pattern vector different from the terminal 1, and it is assumed that the terminal 2 is assigned a pattern vector corresponding to the seventh column of the PDMA pattern matrix. Because the terminal 4 is far from the terminal 1 in terms of channel space characteristics, the same pattern vector as the terminal 1 can be selected for the terminal 4. In this embodiment, the pattern vector corresponding to the second column of the PDMA pattern matrix is selected for the terminal 4.
  • the space frequency channel matrix can be expressed as
  • the PDMA space frequency channel matrix After using the PDMA pattern vector H PDMA (k), the PDMA space frequency channel matrix can be expressed as:
  • a plurality of frequency domain resources occupied by a basic transmission unit used by a terminal to transmit uplink data use the same MIMO precoding matrix or vector as W or w, where element w jl is a MIMO precoding right of transmission layer 1 to transmission antenna j value.
  • the coded modulation symbol s corresponding to the PDMA pattern vector H PDMA (k) is written by MIMO precoding and PDMA time-frequency resource mapping, and the space-frequency received signal vector obtained through the space-frequency channel is written:
  • terminal 1 selects the pattern vector [1 1 0] T corresponding to the second column of the PDMA pattern matrix, and the matrix formed by the pattern vector is still the column vector, and the maximum row weight (that is, the maximum value of the number of rows per row) Is 1, therefore at least 1 transport layer is required (>1 transport layer can still transmit this PDMA coded modulation symbol stream); terminal 3 selects the pattern vector corresponding to the 5th and 6th columns of the PDMA pattern matrix [1 0 0; 1 0] T , whose pattern vector consists of a matrix dimension of 3*2 and a maximum row weight of 1, so at least 1 transport layer is needed (>1 transport layer can still transmit this PDMA coded modulation symbol stream).
  • the MIMO precoding process of the uplink DMRS symbol on the basic transmission unit corresponding to each transmission layer of the transmission uplink data of the terminal is consistent with the MIMO precoding process of the data symbol.
  • the base station receives a DMRS of a PDMA basic transmission unit that transmits uplink data on a time-frequency resource, and performs channel estimation, and combines multiple frequency domain MIMO channel estimation results occupied by the PDMA pattern vector used by the terminal to form the
  • the user's PDMA extends the space-frequency equivalent channel matrix.
  • the PDMA extended space-frequency equivalent channel matrices of all terminals are then combined into a PDMA extended space-frequency equivalent channel matrix of all terminals.
  • the PDMA extended space-frequency equivalent channel matrix combination of a terminal on a time-frequency resource can be:
  • the frequency domain and the airspace may be first: the frequency domain channels occupied by all PDMA pattern vectors between the pairs of transmitting and receiving antennas are sequentially arranged.
  • the terminal uses the PDMA extended space-frequency equivalent channel in the pre-frequency domain back-space domain combination mode (the subsequent descriptions are in the combination of the pre-frequency domain and the airspace domain):
  • each element in the PDMA extended space-frequency equivalent channel matrix is an uplink DMRS channel estimation result.
  • These DMRS channel estimation results form a PDMA extended space-frequency equivalent channel in two combinations.
  • Terminal 1 The MIMO precoding vector of rank 1 is PDMA pattern vector is Then its PDMA space-frequency equivalent channel is:
  • the MIMO precoding vector of rank 2 is PDMA pattern vector is At this time, the data of one PDMA pattern vector is transmitted through two transport layers, and the amount of data transmitted is doubled. Then its PDMA space-frequency equivalent channel is:
  • the terminal 3 uses two PDMA pattern vectors, and the PDMA pattern vector is And the maximum row weight of the coding matrix formed by the selected two PDMA pattern vectors is 1, then the MIMO precoding vector of rank 1 of one transmission layer can be used. At this time, two PDMA pattern vectors are used and each PDMA pattern vector data is transmitted through one transport layer, and the amount of data transmitted by the terminal 3 is doubled.
  • the MIMO precoding vector of rank 1 the PDMA space-frequency equivalent channel corresponding to the first PDMA pattern vector is:
  • the PDMA space-frequency equivalent channel corresponding to the second PDMA pattern vector is:
  • the MIMO precoding matrix of rank 2 of the two transmission layers can also be used.
  • the PDMA space-frequency equivalent channel corresponding to the first PDMA pattern vector is:
  • the PDMA space-frequency equivalent channel corresponding to the second PDMA pattern vector is:
  • Terminal 4 The MIMO precoding vector of rank 1 is PDMA pattern vector is Then its PDMA space-frequency equivalent channel is
  • the receiving and detecting process of the receiving end of the base station is as shown in FIG. 6.
  • the base station first performs channel estimation according to the uplink DMRS of each terminal received by all receiving antennas, and then reconstructs the PDMA extended space frequency channel matrix of all terminals used for multi-user joint detection according to the PDMA pattern vector used by each terminal.
  • the PDMA extended space frequency channel matrix can be written as:
  • the PDMA extended space frequency channel matrix can be written as:
  • the PDMA extended space frequency channel matrix can be written as:
  • each of them Both are channel estimation results of the uplink DMRS transmitted from the PDMA basic transmission unit used by each user terminal.
  • the number of columns in the PDMA extended space frequency channel matrix corresponding to the MIMO precoding of rank n is n, and each PDMA pattern vector corresponds to at least one column.
  • the number of columns corresponding to the terminal 2 is 2, and the two PDMA pattern vectors of the terminal 3 correspond to one column.
  • the dimension of the PDMA extended space-frequency channel matrix is (N R K) ⁇ N S , where N R is the number of receiving antennas of the base station, K is the number of rows of the PDMA pattern vector, and N S is the number of transmission layers of all terminals transmitted for this time.
  • the base station receiver can adopt a nonlinear detector BP-IDD, wherein one channel coding block of the terminal 2 corresponds to one PDMA pattern vector, and two transmission layers are used. When performing IDD, the second and third columns of the BP output result need to be used. A whole performs channel decoding.
  • a linear detector (such as MMSE) and SIC can also be used when (N R K) ⁇ N S .
  • the traditional uplink MIMO full transmission transmission layer is the number of base station receiving antennas N R , and the system overload rate after combining PDMA and uplink MIMO can be defined as N S /(N R K).
  • the above-mentioned row 9 terminal uses the PDMA pattern matrix [3, 7] for non-orthogonal multiplexing transmission as an example, and all configurations, parameters, and PDMA space-frequency equivalent channel formulas of the terminal 1 to the terminal 4 are the same as in the previous embodiment.
  • the added terminal 5 to terminal 9 are as shown in FIG.
  • the terminals 5, 6, and 9 all use the MIMO precoding vector of rank 1, and the terminals 7, 8 use the MIMO precoding matrix of rank 2.
  • the terminal 8 and the terminal 6 use the same PDMA pattern vector, and the terminal 9 and the terminal 2 use the same PDMA pattern vector.
  • the terminal 5 to the terminal 8 are both two transmitting antennas, and the terminal 9 has one transmitting antenna.
  • the PDMA extended space frequency channel matrix when multiple frequency domain resources use the same MIMO precoding can be written as:
  • the overload rate of this embodiment is 13/(2 ⁇ 3) ⁇ 2.17, which indicates that the combination of PDMA and uplink MIMO can improve the system capacity or the number of access terminals.
  • the embodiment of the present invention provides an apparatus for transmitting uplink data, as shown in FIG.
  • the non-orthogonal multiple access code modulation module 801 is configured to divide the pattern vector of the non-orthogonal multiple access access by using the pattern corresponding to the uplink data, and input the channel-coded uplink data. Obtaining a non-orthogonal multiple access access pattern vector modulation symbol after performing non-orthogonal multiple access code modulation;
  • a power adjustment module 802 configured to perform power adjustment on the modulation symbol
  • a layer mapping module 803, configured to perform transmission layer mapping on the power modulated modulation symbol
  • a MIMO precoding module 804 configured to perform MIMO precoding on the power modulated and transport layer mapped modulated symbols by using a multiple input multiple output MIMO precoding matrix corresponding to the pattern vector of the non-orthogonal multiple access;
  • the resource mapping module 805 is configured to perform time-frequency resource mapping on the MIMO pre-coded modulation symbols corresponding to each antenna port according to the indication of the pattern vector of the non-orthogonal multiple access;
  • the OFDM symbol generating module 806 is configured to generate and transmit orthogonal frequency division multiplexing OFDM symbols of each antenna port according to the modulation symbols mapped by the time-frequency resources.
  • the power allocated for the uplink data corresponding to the pattern vectors of different non-orthogonal multiple accesses is different; or the power allocated for the uplink data corresponding to the pattern vectors of different non-orthogonal multiple accesses is the same.
  • different powers allocated for different uplink data optionally, different powers allocated for different uplink data; or the same power allocated for different uplink data.
  • the channel is based on any of the foregoing device embodiments.
  • the correspondence between the uplink data and the pattern vector of the non-orthogonal multiple access device satisfies at least one of the following:
  • the uplink data of the terminal whose channel spatial correlation is higher than the set threshold corresponds to a different non-orthogonal multiple access access pattern vector
  • the uplink data of the terminal whose spatial correlation is lower than the set threshold corresponds to the same PDMA pattern vector or a different non-orthogonal multiple access access pattern vector;
  • the uplink data of one terminal corresponds to one or more non-orthogonal multiple access access pattern vectors.
  • all transport layers of all terminals use mutually orthogonal demodulation reference signals DMRS.
  • the layer mapping module is configured to:
  • n is a maximum row weight of a pattern matrix not less than a non-orthogonal multiple access pattern vector of the terminal; wherein, a non-orthogonal multiple address
  • the modulation symbols of the accessed pattern vector are mapped to one or more transport layers.
  • the power adjustment module is configured to:
  • the embodiment of the present invention further provides a terminal, as shown in FIG. 9, including:
  • the processor 900 is configured to read a program in the memory 920 and perform the following process:
  • the transceiver 910 is configured to receive and send data under the control of the processor 900;
  • the memory 920 is configured to save data used by the processor 900 to perform operations.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 900 and various circuits of memory represented by memory 920.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 910 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 930 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 in performing operations.
  • the processor when performing power adjustment on the non-orthogonal multiple access access pattern vector modulation symbol, the processor reads the program from the memory, and performs the following process:
  • the power of the modulation symbol of the pattern vector of the non-orthogonal multiple access is adjusted according to the indication of the base station or the autonomous determination of the allocated power.
  • the power allocated to the uplink data corresponding to different non-orthogonal multiple access access patterns is different; or, corresponding to different non-orthogonal multiple access access patterns
  • the uplink data of the vector is allocated the same power.
  • the correspondence between the uplink data and the pattern vector of the non-orthogonal multiple access access meets at least one of the following:
  • the uplink data of the terminal whose channel spatial correlation is higher than the set threshold corresponds to a different non-orthogonal multiple access access pattern vector
  • the uplink data of the terminal whose channel spatial correlation is lower than the set threshold corresponds to the same non-orthogonal multiple access access pattern vector or different non-orthogonal multiple access access pattern vector;
  • the uplink data of one terminal corresponds to one or more non-orthogonal multiple access access pattern vectors.
  • all transport layers of all terminals use mutually orthogonal demodulation reference signals DMRS.
  • the processor is configured to read the program from the memory, and perform the following process:
  • n is a maximum row weight of a pattern matrix not less than a non-orthogonal multiple access pattern vector of the terminal; wherein, a non-orthogonal multiple address
  • the modulation symbols of the accessed pattern vector are mapped to one or more transport layers.
  • the embodiment of the present invention further provides an uplink data transmission apparatus, as shown in FIG. 10, including:
  • the channel matrix reconstruction module 1001 is configured to reconstruct a multi-terminal non-orthogonal multiple access extended spatial frequency equivalent channel matrix of a time-frequency resource, and the multi-terminal non-orthogonal multiple access of the time-frequency resource
  • the extended space-frequency equivalent channel matrix is non-orthogonal for each terminal that occupies uplink data on the time-frequency resource a multiple access extension extended space-frequency equivalent channel, wherein each non-orthogonal multiple access access extended space-frequency equivalent channel of the time-frequency resource is sent by the terminal in the time-frequency resource
  • the MIMO channel estimation of the plurality of frequency domain resources corresponding to the data is configured, and the plurality of frequency domain resources corresponding to the uplink data are indicated by a pattern vector of the non-orthogonal multiple access corresponding to the uplink data;
  • the uplink data detecting module 1002 is configured to detect, according to the non-orthogonal multiple access extension extended space-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, the uplink data of the transmission of the time-frequency resources by the plurality of terminals.
  • the channel matrix reconstruction module is configured to:
  • the extended space-frequency equivalent channel matrix of the non-orthogonal multiple access of the multi-terminal of the time-frequency resource is reconstructed according to the first spatial domain and the frequency domain.
  • a pattern vector distribution module is further configured to:
  • the pattern data of different non-orthogonal multiple access access is preferentially allocated to the uplink data of each terminal on the same time-frequency resource, and the uplink data of one terminal corresponds to one or more non-orthogonal multiple access accesses.
  • Pattern vector if the number of pattern vectors of non-orthogonal multiple access cannot satisfy the uplink data, assign a non-orthogonal multiple access pattern vector to the uplink data of each terminal according to at least one of the following criteria:
  • At least two terminals whose channel spatial correlation is lower than a set threshold allow transmission of uplink data using the same non-orthogonal multiple access pattern vector.
  • the uplink data detection module is configured to:
  • Detecting by using a linear detection or a non-linear detection method, the uplink data of the plurality of terminals in the time-frequency resource according to the non-orthogonal multiple access extension extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, and Perform interference cancellation or iterative detection decoding.
  • the embodiment of the present invention further provides a base station, as shown in FIG.
  • the processor 1100 is configured to read a program from the memory 1120 and perform the following process:
  • the frequency equivalent channel is composed of MIMO channel estimation of a plurality of frequency domain resources corresponding to the uplink data sent by the terminal in the time-frequency resource, and the plurality of frequency domain resources corresponding to the uplink data are not corresponding to the uplink data.
  • the transceiver 1110 is configured to receive and send data under the control of the processor 1100.
  • the memory 1120 is configured to save data used by the processor 1100 to perform an operation.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 1110 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in performing operations.
  • the processor when reconstructing a non-orthogonal multiple access of the time-frequency resource and expanding the space-frequency equivalent channel matrix, the processor is configured to read the program from the memory, and perform the following process:
  • the non-orthogonal multiple access extension extended space-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource is reconstructed according to the first spatial domain and the frequency domain.
  • the processor is further configured to read the program from the memory and perform the following process:
  • a pattern vector distribution module for:
  • the pattern data of different non-orthogonal multiple access access is preferentially allocated to the uplink data of each terminal on the same time-frequency resource, and the uplink data of one terminal corresponds to one or more non-orthogonal multiple access accesses.
  • Pattern vector if the number of pattern vectors of non-orthogonal multiple access cannot satisfy the uplink data, assign a non-orthogonal multiple access pattern vector to the uplink data of each terminal according to at least one of the following criteria:
  • At least two terminals whose channel spatial correlation is lower than a set threshold allow transmission of uplink data using the same non-orthogonal multiple access pattern vector.
  • the non-orthogonal multiple access extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource is used to detect uplink data sent by the multiple terminals in the time-frequency resource.
  • the processor is used to read the program from memory, the following process is performed:
  • Detecting by using a linear detection or a non-linear detection method, the uplink data of the plurality of terminals in the time-frequency resource according to the non-orthogonal multiple access extension extended spatial-frequency equivalent channel matrix of the multi-terminal of the time-frequency resource, and Perform interference cancellation or iterative detection decoding.
  • the non-orthogonal multiple access technology is combined with the uplink MIMO technology, and the characteristics of the non-orthogonal multiple access technology in the time-frequency domain, the coding domain, the power domain, and the airspace are fully utilized, and the A plurality of terminals simultaneously transmit data on the same time-frequency resource, thereby achieving an increase in system capacity or the number of access terminals.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种上行数据的发送方法、接收方法及装置。其发送方法包括：使用上行数据对应的非正交多址接入图样矢量，对经过信道编码的上行数据进行非正交多址接入编码调制后获得非正交多址接入图样矢量的调制符号；然后经过功率调整，传输层映射，MIMO预编码，资源映射，生成每个天线端口的OFDM符号。本发明实施例，将非正交多址接入技术与上行MIMO技术相结合，充分利用非正交多址接入技术在时频域、编码域、功率域与空域等的特性，可以支持更多的终端在相同时频资源上同时传输数据，从而实现系统容量或接入终端数量的提升。

Description

一种上行数据的发送方法、接收方法及装置
本申请要求在2015年8月04日提交中国专利局、申请号为201510472481.0、发明名称为“一种上行数据的发送方法、接收方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种上行数据的发送方法、接收方法及装置。
背景技术
多输入多输出(MIMO，Multiple Input Multiple Output)技术作为长期演进(LTE，Long Term Evolution)及其演进系统的关键技术之一，已经得到广泛应用并不断增强。但仍然无法满足未来通信对用户容量的需求。
如何在同小区内支持更多用户接入，是亟待解决的问题。
发明内容
本发明提供了一种上行数据的发送方法、接收方法及装置，以解决如何在同小区内支持更多用户接入的问题。
本发明实施例中提供了一种上行数据的发送方法，包括：
使用上行数据对应的非正交多址接入的图样矢量，对经过信道编码的所述上行数据进行非正交多址接入编码调制后获得非正交多址接入的图样矢量的调制符号；
对所述调制符号进行功率调整；
将功率调整后的调制符号进行传输层映射；
使用所述非正交多址接入的图样矢量的对应的多输入多输出MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码；
按照所述非正交多址接入的图样矢量的指示，对经过MIMO预编码的对 应于每个天线端口的调制符号进行时频资源映射；
根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用OFDM符号并发送。
可选的，所述对所述非正交多址接入的图样矢量调制符号进行功率调整，包括：
按照基站指示或自主确定进行功率分配，对所述非正交多址接入技术的图样矢量调制符号进行功率调整。
基于上述任意方法实施例，可选的，为对应于不同的非正交多址接入的图样矢量的上行数据分配的不同功率；或者，为对应于不同的非正交多址接入的图样矢量的上行数据分配的相同功率。
基于上述任意方法实施例，可选的，所有终端的所有传输层使用相互正交的解调参考信号DMRS。
基于上述任意方法实施例，可选的，所述将功率调整后的非正交多址接入的图样矢量调制符号进行传输层映射，包括：
将功率调整后的非正交多址接入的图样矢量调制符号映射到n个传输层，所述n为不小于本终端的非正交多址接入的图样矢量构成的图样矩阵的最大行重；其中，一个非正交多址接入的图样矢量的调制符号映射到一个或多个传输层。
本发明实施例中提供了一种上行数据的接收方法，包括：
根据信道估计结果，重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵由占用所述时频资源上发送上行数据的每个终端的非正交多址接入扩展空频等效信道构成，所述每个终端在所述时频资源的非正交多址接入扩展空频等效信道由该终端在所述时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述上行数据对应的多个频域资源由所述上行数据对应的非正交多址接入的图样矢量指示；
根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检 测多个终端在所述时频资源的发送的上行数据。
可选的，所述根据信道估计结果，重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，包括：
根据信道估计结果，按照先频域再空域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵；或者，
根据信道估计结果，按照先空域再频域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵。
基于上述任意方法实施例，可选的，该方法还包括：
对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢量：
信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
基于上述任意方法实施例，可选的，所述根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，包括：
采用线性检测或非线性检测方式，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，并进行干扰删除或迭代检测译码。
本发明实施例中提供了一种上行数据的发送装置，包括：
非正交多址接入编码调制模块，用于使用上行数据对应的非正交多址接入的图样矢量，对经过信道编码的所述上行数据进行非正交多址接入编码调制后获得非正交多址接入的图样矢量调制符号；
功率调整模块，用于对所述调制符号进行功率调整；
层映射模块，用于将功率调整后的调制符号进行传输层映射；
MIMO预编码模块，用于使用所述非正交多址接入的图样矢量对应的多输入多输出MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码；
资源映射模块，用于按照所述非正交多址接入的图样矢量的指示，对经过MIMO预编码的对应于每个天线端口的调制符号进行时频资源映射；
OFDM符号生成模块，用于根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用OFDM符号并发送。
可选的，所述功率调整模块用于：
按照基站指示或自主确定分配功率，对所述非正交多址接入的图样矢量调制符号进行功率调整。
基于上述任意装置实施例，可选的，为对应于不同的非正交多址接入的图样矢量的上行数据分配的不同功率；或者，为对应于不同的非正交多址接入的图样矢量的上行数据分配的相同功率。
基于上述任意装置实施例，可选的，所有终端的所有传输层使用相互正交的解调参考信号DMRS。
基于上述任意装置实施例，可选的，所述层映射模块用于：
将功率调整后的调制符号映射到n个传输层，所述n为不小于本终端的非正交多址接入的图样矢量构成的图样矩阵的最大行重；其中，一个非正交多址接入的图样矢量的调制符号映射到一个或多个传输层。
本发明实施例中提供了一种终端，包括：
处理器，用于读取存储器中的程序，执行下列过程：
使用上行数据对应的非正交多址接入的图样矢量，对经过信道编码的所述上行数据进行非正交多址接入编码调制后获得非正交多址接入的图样矢量的调制符号；
对所述调制符号进行功率调整；
将功率调整后的调制符号进行传输层映射；
使用所述非正交多址接入的图样矢量的对应的多输入多输出MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码；
按照所述非正交多址接入的图样矢量的指示，对经过MIMO预编码的对应于每个天线端口的调制符号进行时频资源映射；
根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用OFDM符号并通过收发机发送；
收发机，用于在处理器的控制下接收和发送数据；
存储器，用于保存处理器执行操作时所使用的数据。
可选的，对所述非正交多址接入的图样矢量调制符号进行功率调整时，处理器从存储器中读取程序，执行下列过程：
按照基站指示或自主确定分配功率，对所述非正交多址接入的图样矢量调制符号进行功率调整。
基于上述任意终端实施例，可选的，为对应于不同的非正交多址接入的图样矢量的上行数据分配的不同功率；或者，为对应于不同的非正交多址接入的图样矢量的上行数据分配的相同功率。
基于上述任意终端实施例，可选的，所有终端的所有传输层使用相互正交的解调参考信号DMRS。
基于上述任意终端实施例，可选的，将功率调整后的调制符号进行传输层映射时，处理器用于从存储器中读取程序，执行下列过程：
将功率调整后的调制符号映射到n个传输层，所述n为不小于本终端的非正交多址接入的图样矢量构成的图样矩阵的最大行重；其中，一个非正交多址接入的图样矢量的调制符号映射到一个或多个传输层。
本发明实施例中提供了一种上行数据的接收装置，包括：
信道矩阵重构模块，用于重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵由占用所述时频资源上发送上行数据的每个终端的非正交多址 接入扩展空频等效信道构成，所述每个终端在所述时频资源的非正交多址接入扩展空频等效信道由该终端在所述时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述上行数据对应的多个频域资源由所述上行数据对应的非正交多址接入的图样矢量指示；
上行数据检测模块，用于根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据。
可选的，所述信道矩阵重构模块用于：
根据信道估计结果，按照先频域再空域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵；或者，
根据信道估计结果，按照先空域再频域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵。
基于上述任意装置实施例，可选的，还包括图样矢量分配模块，用于：
对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢量：
信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
基于上述任意装置实施例，可选的，所述上行数据检测模块用于：
采用线性检测或非线性检测方式，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，并进行干扰删除或迭代检测译码。
本发明实施例中提供了一种基站，包括：
处理器，用于从存储器中读取程序，执行下列过程：
重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵由占用所述时频资源上发送上行数据的每个终端的非正交多址接入扩展空频等效信道构成，所述每个终端在所述时频资源的非正交多址接入扩展空频等效信道由该终端在所述时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述上行数据对应的多个频域资源由所述上行数据对应的非正交多址接入的图样矢量指示；
根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据；
收发机，用于在处理器的控制下接收和发送数据；
存储器，用于保存处理器执行操作时所使用的数据。
可选的，根据信道估计结果，重构一个时频资源的多终端的非正交多址接入扩展空频等效信道矩阵时，处理器用于从存储器中读取程序，执行下列过程：
根据信道估计结果，按照先频域再空域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵；或者，
根据信道估计结果，按照先空域再频域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵。
基于上述任意基站实施例，可选的，处理器还用于从存储器中读取程序，执行下列过程：
对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢量：
信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
基于上述任意基站实施例，可选的，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据时，处理器用于从存储器中读取程序，执行下列过程：
采用线性检测或非线性检测方式，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，并进行干扰删除或迭代检测译码。
在本发明实施例提供的技术方案中，将非正交多址接入技术与上行MIMO技术相结合，充分利用非正交多址接入技术在时频域、编码域、功率域与空域等的特性，可以支持更多的终端在相同时频资源上同时传输数据，从而实现系统容量或接入终端数量的提升。
附图说明
图1为本发明一个实施例提供的方法流程示意图；
图2为本发明另一个实施例提供的方法流程示意图；
图3为本发明实施例提供的PDMA与MIMO预编码的实现示意框图；
图4为本发明又一个实施例提供的方法流程示意图；
图5为本发明一个实施例提供的系统架构示意图；
图6为本发明一个实施例提供的基站接收和检测过程示意图；
图7为本发明另一个实施例提供的系统架构示意图；
图8为本发明一个实施例提供的装置示意图；
图9为本发明一个实施例提供的终端结构示意图；
图10为本发明另一个实施例提供的装置示意图；
图11为本发明一个实施例提供的基站结构示意图。
具体实施方式
本发明实施例提供的技术方案的核心是将非正交多址接入技术与上行 MIMO技术相结合，充分利用非正交多址接入技术在时频域、编码域、功率域与空域的特性，可以支持更多的终端在相同时频资源上同时传输数据，从而实现系统容量或接入用户终端数量的提升。
本发明实施例将以图样分割多址接入(PDMA，Pattern Division Multiple Access)技术为例进行说明。应当指出的是，其他非正交多址接入技术也适用于本发明实施例。
PDMA是一种新型非正交多址接入技术，它利用多用户信道的非对称性，通过设计多用户不等分集度的稀疏编码矩阵和编码调制联合优化方案，实现时频域、功率域和空域等多维度的非正交信号叠加传输，获得更高多用户复用和分集增益。
PDMA可以在时频资源的编码域、功率域、空域等多个信号域上进行映射，形成区分多用户的非正交特征图样。
对于编码域，其基本概念是多终端在相同时频资源上利用PDMA图样矩阵的列(即PDMA图样矢量)来叠加发送各自数据；
对于功率域，其基本概念是多终端占用相同时频资源但是使用不同发送功率进行叠加发送各自数据；
对于空域，其基本概念是多终端的数据信息在空间多天线上进行叠加发送。
下面结合附图对本发明实施例进行详细描述。
图1所示为本发明实施例提供的终端侧的上行数据的发送方法，具体包括如下操作：
步骤100、使用上行数据对应的PDMA图样矢量，对经过信道编码的上述上行数据进行PDMA编码调制。
其中，经过PDMA编码调制的上行数据称为PDMA图样矢量的调制符号，以下简称调制符号。
步骤110、对调制符号进行功率调整。
步骤120、将功率调整后的调制符号进行传输层映射。
步骤130、使用上述PDMA图样矢量对应的MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码。
其中，当rank(秩)＝1，PDMA图样矢量对应的是MIMO预编码向量，即，MIMO预编码向量是特殊的MIMO预编码矩阵。当发射天线数为1时，MIMO预编码矩阵进一步退化为标量1。
步骤140、按照上述PDMA图样矢量的指示，对经过MIMO预编码的对应于每个天线端口的调制符号进行时频资源映射。
步骤150、根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用(OFDM，Orthogonal Frequency Division Multiplex)符号并发送。
本发明实施例，将非正交多址接入技术与上行MIMO技术相结合，充分利用非正交多址接入技术在时频域、编码域、功率域与空域等的特性，可以支持更多的终端在相同时频资源上同时传输数据，从而实现系统容量或接入终端数量的提升。
上述步骤110中，既可以按照基站的指示分配功率，对PDMA图样矢量调制符号进行功率调整，也可以自主确定分配功率，对PDMA图样矢量调制符号进行功率调整。
无论哪种功率分配方式，为了进一步提高系统容量，可以为对应于不同的非正交多址接入的图样矢量的上行数据分配不同的功率，通过不同的功率的数据叠加以提高检测性能。当然，也可以为对应于不同的非正交多址接入的图样矢量的上行数据分配相同的功率。
基于上述任意方法实施例，本发明实施例中，可以由基站为终端分配PDMA图样矢量，也可以由终端自主选择所使用的PDMA图样矢量。
可选的，上行数据与PDMA图样矢量的对应关系满足以下至少一条：
信道空间相关性高于设定阈值的终端的上行数据对应不同的PDMA图样矢量；
信道空间相关性低于设定阈值的终端的上行数据对应相同的PDMA图样矢量或不同的PDMA图样矢量；
一个终端的上行数据对应一个或多个非正交多址接入的图样矢量。
也就是说，对于调度业务，在同一块时频资源上基站应尽量为各终端的数据分配不同PDMA图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量。但当发送的数据较多而PDMA图样矢量数量不够用时，可以按照如下准则为各终端的数据分配PDMA图样矢量：信道空间相关性高于设定阈值的两个甚至更多的终端，最好使用不同的PDMA图样矢量传输上行数据。信道空间相关性低于设定阈值的两个甚至更多的终端，可以使用相同的PDMA图样矢量传输上行数据。
为了准确地进行信道估计，实施中，所有终端的所有传输层使用相互正交的解调参考信号(DMRS，DeModulation Reference Signal)。
其中，可以由基站为终端指示DMRS资源，也可以由终端随机选择DMRS资源。
相应的，步骤120中，将功率调整后的PDMA图样矢量调制符号映射到n个传输层，n为不小于本终端的PDMA图样矢量构成的图样矩阵的最大行重；其中，一个非正交多址接入的图样矢量的调制符号映射到一个或多个传输层。
其中，矩阵中每行中取值为1的元素个数为该行的行重。行重最大的行的行重为该矩阵的最大行重。
下面结合附图2，对PDMA技术与MIMO技术结合的终端侧发送上行数据的流程进行说明。
对于一个终端而言，如果有两个甚至两个以上的上行数据需要在相同的时频资源上发送，则如图2中数据1和数据2的处理流程，可以并行处理。如果只有一个上行数据发送，则图2中虚线框部分可省略。具体的：
上行数据首先经过信道编码；
对经过信道编码的上行数据进行PDMA编码调制，其中，既可以采用传统的调制星座映射，也可以根据使用的PDMA图样矢量进行新的编码调制；
对PDMA编码调制后得到的PDMA图样矢量调制符号进行功率调整，本实施例中，在相同的时频资源上传输的不同上行数据，使用不同的功率；
将功率调整后的PDMA图样矢量调制符号映射到一个或多个传输层(layer)，总传输层数为L，可以按照LTE现有规则进行映射；
将经过功率调整和传输层层映射后的调制符号进行MIMO预编码，如图3所示：需要确定对不同的PDMA图样矢量使用的预编码向量(rank＝1)或矩阵(rank>1)，PDMA图样矢量对应的多个频域资源上使用相同的MIMO预编码向量或矩阵，此时图3中Wf1＝Wf2＝…＝WfK；PDMA图样矢量对应的多个频域资源也可以使用不同的MIMO预编码向量或矩阵。这里MIMO预编码矩阵包含LTE中规定的所有MIMO传输模式的预编码矩阵；
对经过MIMO预编码的对应于每个天线端口的信号进行时频资源映射：按照PDMA图样矢量的指示，“1”表示数据映射到PDMA图样矢量对应的时频资源组的相应时频资源上，“0”表示不映射；
OFDM符号生成：生成每个天线端口的OFDM符号。
其中，终端的上行数据使用的PDMA基本传输单元(包括占用的时频资源、PDMA图样矢量、上行DMRS等)可以由基站指示或者终端自己决定。在一块时频资源上选择PDMA基本传输单元，通常满足如下一些规则：
a)一个终端的上行数据使用一个或多个PDMA图样矢量对应的基本传输单元。属于一个PDMA图样矢量的多个传输层的上行数据使用相同的PDMA图样矢量对应的基本传输单元。
b)信道空间特性接近的多个终端使用不同PDMA图样矢量对应的基本传输单元。
c)当需要传输的终端数非常多时，信道空间相关性较低的多个终端可以使用相同PDMA图样矢量的基本传输单元。
为了准确地进行信道估计，实施中，所有终端的所有传输层使用相互正交的解调参考信号DMRS。基站指示不同的上行DMRS，或者终端随机选择上行DMRS。
一个PDMA图样矢量对应的上行数据所使用的MIMO预编码向量或矩阵 可以按以下规则来确定：
a)一个PDMA图样矢量可以对应一个或多个传输层(layer)。
b)当一个终端使用多个PDMA图样矢量时，意味着将有多个PDMA编码调制数据块。假设多个PDMA图样矢量构成的图样矩阵的最大行重为n，那么至少需要n个传输层。
图4所示为本发明实施例提供的基站侧的上行数据的接收方法，具体包括如下操作：
步骤400、根据信道估计结果，重构一个时频资源的多终端的PDMA扩展空频等效信道矩阵，该时频资源的多终端的PDMA扩展空频等效信道矩阵由占用该时频资源上发送上行数据的每个终端的PDMA扩展空频等效信道矩阵构成，所述的每个终端在该时频资源的PDMA扩展空频等效信道矩阵由该终端在该时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述的上行数据对应的多个频域资源由该上行数据对应的PDMA图样矢量指示。
步骤410、根据上述时频资源的多终端的PDMA扩展空频等效信道矩阵检测多个终端在该时频资源上发送的上行数据。
本发明实施例，将非正交上行多址接入技术与上行MIMO技术相结合，充分利用PDMA时频域、编码域、功率域与空域等特性，可以支持更多的终端在相同时频资源上同时传输数据，从而实现系统容量或接入终端数量的提升。
基站的接收机检测方面，除了PDMA图样矢量对应的频域维度以外还增加了多天线的空域维度，多用户联合检测需要使用重构的空域与频域相结合的PDMA扩展空频信道矩阵，维度增加。基于多用户PDMA扩展空频信道矩阵，基站接收机可以采用线性检测(例如最小均方误差(MMSE，Minimum Mean Square Error))或者非线性检测(例如置信传播(BP，Belief Propagation))，并进行串行干扰删除(SIC，Successive Interference Cancellation)或迭代检测译码(IDD，Iterative Detection and Decoding)。
可选的，步骤400具体可以是：根据在一块时频资源上的信道估计结果，按照先频域再空域的方式重构一块时频资源的多终端的PDMA扩展空频等效信道矩阵；也可以是根据在这块时频资源上的信道估计结果，按照先空域再频域的方式重构一块时频资源的多终端的PDMA扩展空频等效信道矩阵。
可选的，该方法还包括：对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，可以按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢量：
信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
下面以上行4终端使用PDMA图样矩阵[3,7]进行非正交复用传输为例，来进行上述发送端和接收端方案的举例说明。假设终端和基站均有2天线，即各终端均为2×2的上行MIMO系统。下文描述中，小写粗体字母表示列向量，大写粗体字母表示矩阵，“1”为全1矩阵或向量，普通字母为标量，“
Figure PCTCN2016089197-appb-000001
”为Kronecker积，“ο”为矩阵或向量的对应元素乘积，上标“(u)”表示终端u。
假设终端1和终端2在信道空间特性上相近，可以归为一个空间波束(beam)，在基站调度时应尽量分配不同PDMA图样矢量；终端1和终端4在信道空间特性上相隔较远，可以归为非邻近的空间波束，可以分配不同PDMA图样矢量，也可以分配同一PDMA图样矢量，特别是在终端数较多且PDMA图样矢量不够用的情况下。在免调度时，不同终端有可能使用相同的PDMA图样矢量，此时各终端占用的PDMA基本传输单元应尽量使用相互正交的上行DMRS资源。
不失一般性，假设终端1选择了PDMA图样矩阵第2列对应的图样矢量
Figure PCTCN2016089197-appb-000002
终端3选择了PDMA图样矩阵第5、6列对应的图样矢量
Figure PCTCN2016089197-appb-000003
如图5所示。终端2因为与终端1在空间特性上接近，因此需要为其选择与终端1不同的图样矢量，这里假设为终端2分配了PDMA图样矩阵第7列对应的图样矢量
Figure PCTCN2016089197-appb-000004
终端4因为与终端1在信道空间特性上相差较远，因此可以为其选择与终端1相同的图样矢量，本实施例为终端4选择了PDMA图样矩阵第2列对应的图样矢量
Figure PCTCN2016089197-appb-000005
假设hij,f表示终端在频率f上的发射天线j到接收天线i的信道响应，那么发射天线j到接收天线i之间频域信道向量为
Figure PCTCN2016089197-appb-000006
那么，空频信道矩阵可以表示为
Figure PCTCN2016089197-appb-000007
为后续方便起见，
Figure PCTCN2016089197-appb-000008
其中
Figure PCTCN2016089197-appb-000009
为在子载波f上所有发射天线到接收天线i的信道向量。
使用PDMA图样矢量HPDMA(k)后，PDMA空频信道矩阵可以表示为：
Figure PCTCN2016089197-appb-000010
假设终端发送上行数据使用的基本传输单元所占用的多个频域资源使用相同的MIMO预编码矩阵或向量为W或w，其中的元素wjl为传输层l到发射天线j的MIMO预编码权值。对应于PDMA图样矢量HPDMA(k)的编码调制符号s经过MIMO预编码及PDMA时频资源映射、并通过空频信道获得的空频接收信号向量写作：
Figure PCTCN2016089197-appb-000011
如上假设，终端1选择了PDMA图样矩阵第2列对应的图样矢量[1 1 0]T，其图样矢量构成的矩阵仍为列向量，最大行重(即每行1的个数的最大值)为1，因此至少需要1个传输层(>1个传输层仍然可以传输这一个PDMA编码调制符号流)；终端3选择了PDMA图样矩阵第5、6列对应的图样矢量[1 0 0；0 1 0]T,其图样矢量构成的矩阵维数为3*2，最大行重为1，因此至少需要1个传输层(>1个传输层仍然可以传输这一个PDMA编码调制符号流)。
终端在发送上行数据的每个传输层对应的基本传输单元上的上行DMRS符号的MIMO预编码处理过程与数据符号的MIMO预编码处理过程一致。基站接收到一个终端在一块时频资源上的所有发送上行数据的PDMA基本传输单元的DMRS后进行信道估计，将该终端使用的PDMA图样矢量占用的多个频域的MIMO信道估计结果组合构成该用户的PDMA扩展空频等效信道矩阵。然后将所有终端的PDMA扩展空频等效信道矩阵共同组合成所有终端的PDMA扩展空频等效信道矩阵。
一个终端在一块时频资源上的PDMA扩展空频等效信道矩阵组合方式可以是：
可以先频域再空域：各对收发天线之间的所有PDMA图样矢量占用的频域信道依次排列。
也可以先空域再频域：PDMA图样矢量占用的各频域的MIMO信道依次排列。
该终端以先频域后空域组合方式的PDMA扩展空频等效信道为(后续均以先频域再空域的组合方式进行描述)：
Figure PCTCN2016089197-appb-000012
需要说明的是，PDMA扩展空频等效信道矩阵中的每个元素都是上行DMRS信道估计结果。这些DMRS信道估计结果按照两种组合方式构成PDMA扩展空频等效信道。
终端1：rank 1的MIMO预编码向量为
Figure PCTCN2016089197-appb-000013
PDMA图样矢量为
Figure PCTCN2016089197-appb-000014
那么其PDMA空频等效信道为：
Figure PCTCN2016089197-appb-000015
需要说明的是，
Figure PCTCN2016089197-appb-000016
是该用户终端使用的PDMA基本传输单元发送的上行DMRS的信道估计结果。
终端2：rank 2的MIMO预编码向量为
Figure PCTCN2016089197-appb-000017
PDMA图样矢量为
Figure PCTCN2016089197-appb-000018
此时一个PDMA图样矢量的数据经过2个传输层传输，传输的数据量增加一倍。那么其PDMA空频等效信道为：
Figure PCTCN2016089197-appb-000019
终端3：根据前述规则，终端3使用2个PDMA图样矢量，PDMA图样矢量为
Figure PCTCN2016089197-appb-000020
且选择的2个PDMA图样矢量形成的编码矩阵的最大行重为1，那么可以采用1个传输层的rank 1的MIMO预编码向量为
Figure PCTCN2016089197-appb-000021
此时使用2个PDMA图样矢量且每个PDMA图样矢量数据经过1个传输层传输，终端3传输的数据量增加一倍。使用rank 1的MIMO预编码向量时第1个PDMA图样矢量对应的PDMA空频等效信道为：
Figure PCTCN2016089197-appb-000022
第2个PDMA图样矢量对应的PDMA空频等效信道为：
Figure PCTCN2016089197-appb-000023
也可采用2个传输层的rank 2的MIMO预编码矩阵为
Figure PCTCN2016089197-appb-000024
此时第1个PDMA图样矢量对应的PDMA空频等效信道为：
Figure PCTCN2016089197-appb-000025
第2个PDMA图样矢量对应的PDMA空频等效信道为：
Figure PCTCN2016089197-appb-000026
终端4：rank 1的MIMO预编码向量为
Figure PCTCN2016089197-appb-000027
PDMA图样矢量为
Figure PCTCN2016089197-appb-000028
那么其PDMA空频等效信道为
Figure PCTCN2016089197-appb-000029
基站接收端的接收和检测过程如图6所示。基站首先根据所有接收天线接收的各终端的上行DMRS进行信道估计，再需根据每个终端使用的PDMA图样矢量重构用于多用户联合检测的所有终端的PDMA扩展空频信道矩阵。终端3使用rank 1预编码矩阵时，PDMA扩展空频信道矩阵可以写作：
Figure PCTCN2016089197-appb-000030
终端3使用rank 2预编码矩阵时，PDMA扩展空频信道矩阵可以写作：
Figure PCTCN2016089197-appb-000031
若各频域资源的MIMO预编码矩阵或向量不同，终端3使用rank 2预编码矩阵时，PDMA扩展空频信道矩阵可以写作：
Figure PCTCN2016089197-appb-000032
其中每一项
Figure PCTCN2016089197-appb-000033
均是从各用户终端使用的PDMA基本传输单元发送的上行DMRS的信道估计结果。。需要注意，rank n的MIMO预编码对应的PDMA扩展空频信道矩阵中的列数为n，并且每个PDMA图样矢量至少对应1列。例如终端2对应的列数为2，终端3的两个PDMA图样矢量各对应1列。
PDMA扩展空频信道矩阵的维数为(NRK)×NS，其中NR为基站接收天线数，K为PDMA图样矢量的行数，NS为本次传输的所有终端的传输层数。基站接收机可以采用非线性的检测器BP-IDD，其中终端2的一个信道编码块对应一个PDMA图样矢量，使用2个传输层，在进行IDD时需要将BP输出结果的第2、3列作为一个整体进行信道译码。当(NRK)≥NS时也可以采用线性检测器 (例如MMSE)并进行SIC。
传统的上行MIMO满发送传输层数为基站接收天线数NR，可以定义PDMA与上行MIMO结合后的系统过载率为NS/(NRK)。本实施例的过载率为6/(2×3)＝1。
以上行9终端使用PDMA图样矩阵[3,7]进行非正交复用传输为例，终端1到终端4的所有配置、参数及PDMA空频等效信道公式均与上一实施例相同。
增加的终端5到终端9如图7所示。其中终端5、6、9均使用rank 1的MIMO预编码向量，终端7、8使用rank 2的MIMO预编码矩阵。终端8与终端6使用相同的PDMA图样矢量，终端9与终端2使用相同的PDMA图样矢量。
假设终端5到终端8均为2根发射天线，终端9有1根发射天线。终端5到终端9的预编码矩阵或向量分别为
Figure PCTCN2016089197-appb-000034
Figure PCTCN2016089197-appb-000035
和w(9)＝[1]。
终端3使用rank 1预编码矩阵时，多个频域资源使用相同MIMO预编码时的PDMA扩展空频信道矩阵可以写作：
Figure PCTCN2016089197-appb-000036
本实施例的过载率为13/(2×3)≈2.17，表明PDMA与上行MIMO的结合可以实现系统容量或接入终端数量的提升。
基于与方法同样的发明构思，本发明实施例提供了一种上行数据的发送装置，如图8所示，包括：
非正交多址接入编码调制模块801，用于使用上行数据对应的图样分割多址接入技术非正交多址接入的图样矢量，对经过信道编码的所述上行数据进 行非正交多址接入编码调制后获得非正交多址接入的图样矢量调制符号；
功率调整模块802，用于对所述调制符号进行功率调整；
层映射模块803，用于将功率调整后的调制符号进行传输层映射；
MIMO预编码模块804，用于使用所述非正交多址接入的图样矢量对应的多输入多输出MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码；
资源映射模块805，用于按照所述非正交多址接入的图样矢量的指示，对经过MIMO预编码的对应于每个天线端口的调制符号进行时频资源映射；
OFDM符号生成模块806，用于根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用OFDM符号并发送。
为对应于不同的非正交多址接入的图样矢量的上行数据分配的功率不同；或者，为对应于不同的非正交多址接入的图样矢量的上行数据分配的功率相同。
基于上述任意装置实施例，可选的，为不同的上行数据分配的不同功率；或者，为不同的上行数据分配的相同功率。
信道基于上述任意装置实施例，可选的，上行数据与非正交多址接入的图样矢量的对应关系满足以下至少一条：
信道空间相关性高于设定阈值的终端的上行数据对应不同的非正交多址接入的图样矢量；
空间相关性低于设定阈值的终端的上行数据对应相同的PDMA图样矢量或不同的非正交多址接入的图样矢量；
一个终端的上行数据对应一个或多个非正交多址接入的图样矢量。
可选的，所有终端的所有传输层使用相互正交的解调参考信号DMRS。
可选的，所述层映射模块用于：
将功率调整后的调制符号映射到n个传输层，所述n为不小于本终端的非正交多址接入的图样矢量构成的图样矩阵的最大行重；其中，一个非正交多址接入的图样矢量的调制符号映射到一个或多个传输层。
基于上述任意装置实施例，可选的，所述功率调整模块用于：
按照基站指示或自主确定进行功率分配，对所述非正交多址接入的图样矢量调制符号进行功率调整。
基于与方法同样的发明构思，本发明实施例还提供一种终端，如图9所示，包括：
处理器900，用于读取存储器920中的程序，执行下列过程：
使用上行数据对应的非正交多址接入的图样矢量，对经过信道编码的所述上行数据进行非正交多址接入编码调制后获得非正交多址接入的图样矢量的调制符号；
对所述调制符号进行功率调整；
将功率调整后的调制符号进行传输层映射；
使用所述非正交多址接入的图样矢量的对应的多输入多输出MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码；
按照所述非正交多址接入的图样矢量的指示，对经过MIMO预编码的对应于每个天线端口的调制符号进行时频资源映射；
根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用OFDM符号并通过收发机910发送；
收发机910，用于在处理器900的控制下接收和发送数据；
存储器920，用于保存处理器900执行操作时所使用的数据。
其中，在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器900代表的一个或多个处理器和存储器920代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机910可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口930还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器900负责管理总线架构和通常的处理，存储器920可以存储处理器900在执行操作时所使用的数据。
可选的，对所述非正交多址接入的图样矢量调制符号进行功率调整时，处理器从存储器中读取程序，执行下列过程：
按照基站指示或自主确定分配功率，对所述非正交多址接入的图样矢量的调制符号进行功率调整。
基于上述任意终端实施例，可选的，为对应于不同的非正交多址接入的图样矢量的上行数据分配的功率不同；或者，为对应于不同的非正交多址接入的图样矢量的上行数据分配的功率相同。
基于上述任意终端实施例，可选的，上行数据与非正交多址接入的图样矢量的对应关系满足以下至少一条：
信道空间相关性高于设定阈值的终端的上行数据对应不同的非正交多址接入的图样矢量；
信道空间相关性低于设定阈值的终端的上行数据对应相同的非正交多址接入的图样矢量或不同的非正交多址接入的图样矢量；
一个终端的上行数据对应一个或多个非正交多址接入的图样矢量。
可选的，所有终端的所有传输层使用相互正交的解调参考信号DMRS。
可选的，将功率调整后的调制符号进行传输层映射时，处理器用于从存储器中读取程序，执行下列过程：
将功率调整后的调制符号映射到n个传输层，所述n为不小于本终端的非正交多址接入的图样矢量构成的图样矩阵的最大行重；其中，一个非正交多址接入的图样矢量的调制符号映射到一个或多个传输层。
基于与方法同样的发明构思，本发明实施例还提供一种上行数据的传输装置，如图10所示，包括：
信道矩阵重构模块1001，用于重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵由占用所述时频资源上发送上行数据的每个终端的非正交 多址接入扩展空频等效信道构成，所述每个终端在所述时频资源的非正交多址接入扩展空频等效信道由该终端在所述时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述上行数据对应的多个频域资源由所述上行数据对应的非正交多址接入的图样矢量指示；
上行数据检测模块1002，用于根据时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据。
可选的，所述信道矩阵重构模块用于：
根据信道估计结果，按照先频域再空域的方式重构所述时频资源的多终端的非正交多址接入的扩展空频等效信道矩阵；或者，
根据信道估计结果，按照先空域再频域的方式重构所述时频资源的多终端的非正交多址接入的扩展空频等效信道矩阵。
基于上述任意装置实施例，可选的，还包括图样矢量分配模块，用于：
对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢量：
信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
基于上述任意装置实施例，可选的，所述上行数据检测模块用于：
采用线性检测或非线性检测方式，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，并进行干扰删除或迭代检测译码。
基于与方法同样的发明构思，本发明实施例还提供一种基站，如图11所示，包括：
处理器1100，用于从存储器1120中读取程序，执行下列过程：
重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵由占用所述时频资源上发送上行数据的每个终端的非正交多址接入扩展空频等效信道构成，所述每个终端在所述时频资源的非正交多址接入扩展空频等效信道由该终端在所述时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述上行数据对应的多个频域资源由所述上行数据对应的非正交多址接入的图样矢量指示；
根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据；
收发机1110，用于在处理器1100的控制下接收和发送数据；
存储器1120，用于保存处理器1100执行操作时所使用的数据。
其中，在图11中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1100代表的一个或多个处理器和存储器1120代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1110可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。处理器1100负责管理总线架构和通常的处理，存储器1120可以存储处理器1100在执行操作时所使用的数据。
可选的，根据信道估计结果，重构一个时频资源的多终端的非正交多址接入扩展空频等效信道矩阵时，处理器用于从存储器中读取程序，执行下列过程：
根据信道估计结果，按照先频域再空域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵；或者，
根据信道估计结果，按照先空域再频域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵。
基于上述任意基站实施例，可选的，处理器还用于从存储器中读取程序，执行下列过程：
还包括图样矢量分配模块，用于：
对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢量：
信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
基于上述任意基站实施例，可选的，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据时，处理器用于从存储器中读取程序，执行下列过程：
采用线性检测或非线性检测方式，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，并进行干扰删除或迭代检测译码。
本发明实施例，将非正交多址接入技术与上行MIMO技术相结合，充分利用非正交多址接入技术在时频域、编码域、功率域与空域等的特性，可以支持更多的终端在相同时频资源上同时传输数据，从而实现系统容量或接入终端数量的提升。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (18)

  1. 一种上行数据的发送方法，其特征在于，包括：
    使用上行数据对应的非正交多址接入的图样矢量，对经过信道编码的所述上行数据进行非正交多址接入编码调制后获得非正交多址接入的图样矢量的调制符号；
    对所述调制符号进行功率调整；
    将功率调整后的调制符号进行传输层映射；
    使用所述非正交多址接入的图样矢量的对应的多输入多输出MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码；
    按照所述非正交多址接入的图样矢量的指示，对经过MIMO预编码的对应于每个天线端口的调制符号进行时频资源映射；
    根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用OFDM符号并发送。
  2. 根据权利要求1所述的方法，其特征在于，为对应于不同的非正交多址接入的图样矢量的上行数据分配不同的功率；或者，为对应于不同的非正交多址接入的图样矢量的上行数据分配相同的功率。
  3. 根据权利要求1所述的方法，其特征在于，所有终端的所有传输层使用相互正交的解调参考信号DMRS。
  4. 根据权利要求1所述的方法，其特征在于，所述将功率调整后的调制符号进行传输层映射，包括：
    将功率调整后的调制符号映射到n个传输层，所述n为不小于本终端的非正交多址接入的图样矢量构成的图样矩阵的最大行重；其中，一个非正交多址接入的图样矢量的调制符号映射到一个或多个传输层。
  5. 根据权利要求1～4任一项所述的方法，其特征在于，所述对所述调制符号进行功率调整，包括：
    按照基站指示或自主确定进行功率分配，对所述非正交多址接入技术的 图样矢量调制符号进行功率调整。
  6. 一种上行数据的接收方法，其特征在于，包括：
    根据信道估计结果，重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵由占用所述时频资源上发送上行数据的每个终端的非正交多址接入扩展空频等效信道构成，所述每个终端在所述时频资源的非正交多址接入扩展空频等效信道由该终端在所述时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述上行数据对应的多个频域资源由所述上行数据对应的非正交多址接入的图样矢量指示；
    根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源上发送的上行数据。
  7. 根据权利要求6所述的方法，其特征在于，所述根据信道估计结果，重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，包括：
    根据信道估计结果，按照先频域再空域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵；或者，
    根据信道估计结果，按照先空域再频域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵。
  8. 根据权利要求6或7所述的方法，其特征在于，该方法还包括：
    对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢量：
    信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
    信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
  9. 根据权利要求6或7所述的方法，其特征在于，所述根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，包括：
    采用线性检测或非线性检测方式，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，并进行干扰删除或迭代检测译码。
  10. 一种上行数据的发送装置，其特征在于，包括：
    非正交多址接入编码调制模块，用于使用上行数据对应的非正交多址接入的图样矢量，对经过信道编码的所述上行数据进行非正交多址接入编码调制后获得非正交多址接入的图样矢量调制符号；
    功率调整模块，用于对所述调制符号进行功率调整；
    层映射模块，用于将功率调整后的调制符号进行传输层映射；
    MIMO预编码模块，用于使用所述非正交多址接入的图样矢量对应的多输入多输出MIMO预编码矩阵，对经过功率调整和传输层映射的调制符号进行MIMO预编码；
    资源映射模块，用于按照所述非正交多址接入的图样矢量的指示，对经过MIMO预编码的对应于每个天线端口的调制符号进行时频资源映射；
    OFDM符号生成模块，用于根据时频资源映射后的调制符号，生成每个天线端口的正交频分复用OFDM符号并发送。
  11. 根据权利要求10所述的装置，其特征在于，为对应于不同的非正交多址接入的图样矢量的上行数据分配不同的功率；或者，为对应于不同的非正交多址接入的图样矢量的上行数据分配相同的功率。
  12. 根据权利要求10所述的装置，其特征在于，所有终端的所有传输层使用相互正交的解调参考信号DMRS。
  13. 根据权利要求10所述的装置，其特征在于，所述层映射模块用于：
    将功率调整后的调制符号映射到n个传输层，所述n为不小于本终端的非正交多址接入的图样矢量构成的图样矩阵的最大行重；其中，一个非正交 多址接入的图样矢量的调制符号映射到一个或多个传输层。
  14. 根据权利要求10～13任一项所述的装置，其特征在于，所述功率调整模块用于：
    按照基站指示或自主确定进行功率分配，对所述非正交多址接入的图样矢量调制符号进行功率调整。
  15. 一种上行数据的接收装置，其特征在于，包括：
    信道矩阵重构模块，用于重构一块时频资源的多终端的非正交多址接入扩展空频等效信道矩阵，所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵由占用所述时频资源上发送上行数据的每个终端的非正交多址接入扩展空频等效信道构成，所述每个终端在所述时频资源的非正交多址接入扩展空频等效信道由该终端在所述时频资源内发送的上行数据对应的多个频域资源的MIMO信道估计构成，所述上行数据对应的多个频域资源由所述上行数据对应的非正交多址接入的图样矢量指示；
    上行数据检测模块，用于根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据。
  16. 根据权利要求15所述的装置，其特征在于，所述信道矩阵重构模块用于：
    根据信道估计结果，按照先频域再空域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵；或者，
    根据信道估计结果，按照先空域再频域的方式重构所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵。
  17. 根据权利要求15或16所述的装置，其特征在于，还包括图样矢量分配模块，用于：
    对于调度业务，在同一块时频资源上优先为各终端的上行数据分配不同非正交多址接入的图样矢量，并且一个终端的上行数据对应一个或多个非正交多址接入的图样矢量；如果非正交多址接入的图样矢量数量无法满足上行数据，按照如下至少一条准则为各终端的上行数据分配非正交多址的图样矢 量：
    信道空间相关性高于设定阈值的至少两个终端，优先使用不同的非正交多址接入的图样矢量传输上行数据；
    信道空间相关性低于设定阈值的至少两个终端，允许使用相同的非正交多址接入的图样矢量传输上行数据。
  18. 根据权利要求15或16所述的装置，其特征在于，所述上行数据检测模块用于：
    采用线性检测或非线性检测方式，根据所述时频资源的多终端的非正交多址接入扩展空频等效信道矩阵检测多个终端在所述时频资源的发送的上行数据，并进行干扰删除或迭代检测译码。
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