WO2014015681A1 - 一种信号处理方法以及相关设备 - Google Patents

一种信号处理方法以及相关设备 Download PDF

Info

Publication number
WO2014015681A1
WO2014015681A1 PCT/CN2013/073328 CN2013073328W WO2014015681A1 WO 2014015681 A1 WO2014015681 A1 WO 2014015681A1 CN 2013073328 W CN2013073328 W CN 2013073328W WO 2014015681 A1 WO2014015681 A1 WO 2014015681A1
Authority
WO
WIPO (PCT)
Prior art keywords
data stream
power data
user equipment
base station
channel
Prior art date
Application number
PCT/CN2013/073328
Other languages
English (en)
French (fr)
Inventor
王锐
刘晟
杜颖钢
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2014015681A1 publication Critical patent/WO2014015681A1/zh
Priority to US14/601,734 priority Critical patent/US9468009B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • 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
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488—Multiresolution systems
    • 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
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/04—Channels characterised by the type of signal the signals being represented by different amplitudes or polarities, e.g. quadriplex
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a signal processing method and related equipment.
  • Superposition Coding was first used to theoretically prove the channel capacity of a broadcast channel.
  • the principle is: layering the information to be transmitted into multiple streams, where the first stream is transmitted with the first largest power, the second stream is transmitted with the second largest power, and so on.
  • the transmitting end superimposes multiple data streams simultaneously.
  • a receiver located farther from the transmitting end or a receiver with a poor channel can receive the first few streams, and a receiver closer to the transmitting end or a better channel can receive all the streams. Therefore, the transmitting end can simultaneously serve multiple receivers with different received signal qualities and provide different data rates according to their channel conditions, thereby improving throughput.
  • a common scenario of superposition coding is: The base station transmits a high-power data stream to a remote user, and simultaneously transmits a low-power signal to the near-end user equipment; in the transmission signal space of the base station, the low-power signal is multiplexed with the high-power data stream. Space; the far-end user only detects the high-power data stream, and the near-end user equipment first detects and eliminates the high-power data stream and then detects the low-power signal.
  • the number of antennas of the near end user equipment in order to detect a high power data stream, the number of antennas of the near end user equipment must be greater than or equal to the total number of streams of the high power data stream. This is not enough in many cases (especially multi-user ⁇ ).
  • the embodiments of the present invention provide a signal processing method and related equipment, which are used to reduce the number of antennas required by a near-end user equipment to detect a low-power signal.
  • the signal processing method provided by the present invention includes:
  • the base station adjusts a precoding vector of the high power data stream such that the effective reception channel of the precoding vector multiplied by the low power data stream is equal to a constant;
  • the base station performs superposition coding on the low-power data stream and the adjusted high-power data stream; the base station sends the superimposed encoded data stream to the user equipment, where the user equipment includes a cell center user equipment and a cell An edge user equipment, where the high power data stream is for the cell An interference signal of the central user equipment, the low power data stream being a useful signal to the central user equipment of the cell.
  • the base station provided by the present invention includes:
  • a data adjustment unit configured to adjust a precoding vector of the high power data stream, and multiplying the precoding vector by a valid reception channel of the low power data stream is equal to a constant
  • a superposition coding unit configured to perform a superposition coding on the low power data stream and the adjusted high power data stream
  • a data sending unit configured to send the superimposed encoded data stream to a user equipment, where the user equipment includes a cell center user equipment and a cell edge user equipment, where the high power data stream is for the cell center user equipment An interference signal, the low power data stream being a useful signal to the cell center user equipment.
  • the embodiments of the present invention have the following advantages:
  • the base station adjusts the precoding vector of the high power data stream before transmitting the data stream to the user equipment, so that the effective receiving channel of the precoding vector multiplied by the low power data stream is equal to a non-zero constant Achieving spatial alignment of the high-power data stream; so that the near-end user equipment can detect the high-power data stream that needs to be deleted, using an antenna with fewer streams than the high-power data stream to be detected. All high power data streams.
  • FIG. 1 is a schematic flow chart of a signal processing method according to an embodiment of the present invention.
  • FIG. 2 is another schematic flowchart of a signal processing method according to an embodiment of the present invention.
  • FIG. 3 is another schematic flowchart of a signal processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing the logical structure of a base station according to an embodiment of the present invention.
  • the embodiments of the present invention provide a signal processing method and related equipment, which are used to reduce the number of antennas required by a near-end user equipment to detect a low-power signal.
  • an embodiment of a signal processing method in an embodiment of the present invention includes:
  • the base station adjusts a precoding vector of the high power data stream.
  • the base station adjusts the precoding vector of the high power data stream such that the precoding vector multiplied by the effective receive channel of the low power data stream is equal to a non-zero constant to achieve spatial alignment of the high power data stream.
  • the spatial alignment includes: zero space alignment and signal space alignment; the zero space alignment refers to aligning a high power data stream into a null space of an effective receiving channel of a near end user equipment; the signal space alignment refers to The high-power data stream achieves signal space alignment in the space of the effective receiving channel of the near-end user equipment, that is, after the receiving vector of the near-end user equipment, the signal constellation diagrams formed at the near-end user equipment are completely identical.
  • the base station performs superposition coding on the low-power data stream and the adjusted high-power data stream.
  • the base station performs superposition coding on the low-power data stream and the adjusted high-power data stream.
  • the signal is spatially aligned.
  • the high power data stream requires the same modulation mode.
  • the base station sends the superposed encoded data stream to the user equipment.
  • the base station sends the superimposed and encoded data stream to the user equipment.
  • the user equipment includes a near-end user equipment and a remote user equipment, and the near-end user equipment is also called a cell center user equipment, and the remote user equipment is also called It is a cell edge user equipment.
  • the base station adjusts the precoding vector of the high power data stream before transmitting the data stream to the user equipment, so that the effective receiving channel of the precoding vector multiplied by the low power data stream is equal to a constant.
  • the spatial alignment of the high-power data stream so that the near-end user equipment can detect all the high-power data streams that need to be deleted, and use less antennas than the high-power data streams that need to be detected. High power data stream.
  • the base station transmits L l L 2 , L M high power data streams to M remote users, and at the same time, the base station transmits a low power data stream to a near end user equipment, please refer to FIG. 2 .
  • the channel from the base station to the M remote users is 3 ⁇ 4, ..., H M , and the channel to the near-end user equipment is I.
  • the receiving matrix of the L M data streams of the far-end user is Q M
  • the receiving vector of the near-end user equipment is T.
  • the base station classifies the high power data stream to be sent.
  • the high-power data stream to be sent by the base station is classified into a data stream that is zero-space aligned and a data stream that is spatially aligned.
  • the base station may set a rule for selecting a spatially aligned high-power data stream.
  • the base station may generate a set of alignments, each element in the set corresponding to an aligned allocation manner;
  • the current signal transmission situation is the overall system corresponding to each of the distribution modes Capacity; finally, selecting the corresponding allocation mode with the largest overall system capacity, and selecting a high-power data stream aligned to the channel zero space sent to the near-end user equipment according to the allocation manner, and aligning to the near-end A high power data stream of the effective receiving channel of the user equipment.
  • the base station adjusts a precoding vector of the high power data stream.
  • the base station adjusts the pre-coding vector of the high-power data stream, so that The precoding vector multiplied by the effective receive channel Y of the low power data stream is equal to the non-zero constant a.
  • a is a non-zero constant that is predetermined and equal for all signal spatially aligned data streams.
  • the base station performs superposition coding on the low-power data stream and the adjusted high-power data stream.
  • the base station performs superposition coding on the low-power data stream and the adjusted high-power data stream, specifically, spatially aligning. High power data streams require the same modulation mode.
  • the base station can also use the same channel coding for the base station; when the same channel coding is used, the near-end user equipment can uniformly decode the aligned high-power data stream to obtain a more accurate high-power data stream estimation. It is better to perform high power data stream deletion.
  • the base station sends the superposed encoded data stream to the user equipment.
  • the near-end user equipment has the following processing methods:
  • Joint signal detection for high power data streams interference signals for near-end user equipment
  • low power signals which are useful signals for near-end user equipment.
  • the detection detects a low power signal before demodulation and a signal after alignment of several high power data streams before demodulation according to a channel of the base station to the near end user equipment, a precoder of the high and low power signals, and a modulation mode of the high and low power signals.
  • Near-end user equipment The aligned high power data stream is deleted first, and finally, the near end user equipment demodulates and decodes the detected low power signal.
  • the near-end user equipment may first decode the superposed high-power data stream to improve the accuracy of detecting and deleting the high-power data stream. . Specific steps are as follows:
  • the precoder of the high and low power signals and the modulation mode of the high and low power signals the signals aligned by the high power data streams before demodulation are detected; the alignment is performed according to the prior art (signal space)
  • the high-power data stream after alignment is demodulated and decoded, the interference signal (aligned high-power data stream) is reconstructed for interference cancellation, and the low-power signal is demodulated and decoded.
  • the base station transmits, Lj, L M high power data streams to M remote users, and at the same time, the base station transmits N (N is less than or equal to M) low power data streams to N near end user equipments, please refer to image 3.
  • the channel from the base station to the M remote users is 3 ⁇ 4, ..., H M , and the channels to the near-end user equipment are ⁇ ⁇ 2 , ..., I N .
  • the near-end user equipment precoding vector is S N .
  • the nth (n l, 2, ..., N) near
  • the receiving vector of the end user equipment is T M .
  • the base station classifies the high power data stream to be sent
  • the high-power data stream to be sent by the base station is classified into a data stream that is zero-space aligned and a data stream that is spatially aligned.
  • the base station adjusts a precoding vector of the high power data stream.
  • the base station notifies the corresponding remote user and the near end user equipment of the receiving vector/matrix;
  • the base station performs superposition coding on the low-power data stream and the adjusted high-power data stream.
  • the base station performs superposition coding on the low-power data stream and the adjusted high-power data stream, specifically, spatially aligning High power data streams require the same modulation mode.
  • the base station can also use the same channel coding for them; when the same channel coding is used, the near-end user equipment at the receiving end can uniformly decode the aligned high-power data stream to obtain a more accurate high-power data stream. It is estimated that high power data stream removal is better.
  • the base station sends the superposed encoded data stream to the user equipment.
  • the receiving matrix of the nth far-end user and the receiving vector of the nth near-end user equipment are sequentially calculated:
  • the base station, the nth far end user and the nth near end user equipment each have a root antenna.
  • W n be the matrix of the previous column vector of V n
  • W n be the left singular matrix of the matrix W n I n (assuming that the singular values are arranged from largest to smallest). Then, the received vector T n of the nth near-end user equipment is the first row vector.
  • their precoding vectors can be calculated using the Zero-Forcing method to ensure that the signal sent by the base station to a near-end user equipment will be eliminated after passing through the receiving vectors of other near-end user equipment.
  • the near-end user equipment has the following processing methods:
  • Joint signal detection for high power data streams interference signals for near-end user equipment
  • low power signals which are useful signals for near-end user equipment.
  • the detection detects the low power signal before demodulation and the aligned signals of several high power data streams before demodulation according to the channel of the base station to the near end user equipment, the precoder of the high and low power signals, and the modulation mode of the high and low power signals.
  • the near-end user equipment demodulates and decodes the detected low power signal.
  • several near-end user equipments may be the same actual near-end user equipment.
  • the channels of these near-end user equipments to the base station are identical, and the base station can use this way to send multiple low-power data streams to an actual near-end user equipment.
  • the spatially aligned high-power data stream may be selected in multiple manners, depending on the actual situation, for example, zero-space alignment may be performed on all high-power data streams; High-power data streams are spatially aligned; partial zero-space alignment can be performed, and the remaining high-power data streams are spatially aligned; partial zero-space alignment can also be performed, and the remaining high-power data streams are not spatially aligned (eg, when After the zero-space alignment of the part of the high-power data stream, the number of streams of the remaining high-power data streams is not more than the number of antennas of the near-end user equipment);
  • the base station may set a rule for selecting a spatially aligned high-power data stream.
  • the base station may generate a set of alignments, each element in the set corresponding to an aligned allocation manner (such as the above Selecting a plurality of ways of spatially aligned high-power data streams; and then, according to the current signal transmission situation, the overall system capacity corresponding to each of the allocation modes; and finally, selecting the corresponding allocation with the largest overall system capacity
  • selecting, according to the allocation manner a high power data stream aligned to a channel zero space transmitted to the near end user equipment, and a high power data stream aligned to an effective receiving channel transmitted to the near end user equipment.
  • An embodiment of the base station 40 in the embodiment of the present invention includes:
  • a data adjustment unit 401 configured to adjust a precoding vector of the high power data stream, and multiplying the precoding vector by a valid reception channel of the low power data stream is equal to a constant;
  • the superposition coding unit 402 is configured to perform superposition coding on the low power data stream and the adjusted high power data stream;
  • the data sending unit 403 is configured to send the superposed encoded data stream to the user equipment.
  • the data adjustment unit in the embodiment of the present invention includes:
  • the first adjusting module 4011 is configured to adjust the precoding of the high power data stream if the base station needs to align the high power data stream sent to the remote user equipment to the channel zero space sent to the near end user equipment. a vector, multiplying the precoding vector by a valid receive channel of the low power data stream equal to a command;
  • the second adjusting module 4012 is configured to adjust the precoding of the high power data stream if the base station needs to align the high power data stream sent to the remote user equipment to the effective receiving channel sent to the near end user equipment.
  • a vector, the effective receive channel that multiplies the precoding vector by the low power data stream is equal to a non-zero constant a.
  • the base station in the embodiment of the present invention further includes:
  • the channel coding unit 404 is configured to use the same high-power data stream aligned to the effective receiving channel sent to the near-end user equipment before performing superposition encoding on the low-power data stream and the adjusted high-power data stream.
  • the channel is channel coded.
  • the base station in the embodiment of the present invention further includes:
  • a set generating unit 405, configured to generate a set of alignments, each element in the set corresponding to an aligned allocation manner
  • a capacity calculation unit 406 configured to respectively determine an overall system capacity corresponding to each of the allocation manners according to a current signal transmission situation
  • An allocation selecting unit 407 configured to select a corresponding allocation manner that has the largest overall system capacity, and select a high-power data stream aligned to a channel zero space sent to the near-end user equipment according to the allocation manner, and align to send A high power data stream to the active receiving channel of the near end user equipment.
  • the base station in the embodiment of the present invention further includes:
  • the notifying unit 408 is configured to notify the corresponding remote user equipment and the near-end user equipment of the received vector before superimposing the low-power data stream and the adjusted high-power data stream.
  • Data conditioning unit 401 conditions the precoding vector of the high power data stream such that the precoding vector is multiplied by the effective receive channel of the low power data stream equal to a non-zero constant to achieve spatial alignment of the high power data stream.
  • the spatial alignment includes: zero space alignment and signal space alignment; the zero space alignment refers to Aligning the high power data stream into the null space of the effective receiving channel of the near end user equipment; the signal space alignment means that the high power data stream achieves signal space alignment in the space of the effective receiving channel of the near end user equipment. That is, after the receiving vectors of the near-end user equipments, the signal constellations formed at the near-end user equipment are completely identical.
  • the base station adjusts the pre-coding vector of the high-power data stream, so that the base station adjusts the pre-coding vector of the high-power data stream.
  • the effective reception channel of the precoding vector multiplied by the low power data stream is equal to zero. If the base station needs to align the high-power data stream sent to the remote user equipment to the effective receiving channel sent to the near-end user equipment, the base station adjusts the pre-coding vector of the high-power data stream to make the pre-coding The vector is multiplied by the effective receive channel Y of the low power data stream equal to the non-zero constant a .
  • the set generation unit 405 may generate a set of alignments, where each element in the set corresponds to an aligned allocation manner; 406, according to the current signal transmission situation, the overall system capacity corresponding to each of the allocation modes; finally, the allocation selection unit 407 selects the corresponding allocation mode with the largest overall system capacity, and selects an alignment according to the allocation mode.
  • the superimposition encoding unit 402 superimposes the low power data stream and the adjusted high power data stream. Specifically, the same modulation mode is required for the high power data stream for spatially aligned signals.
  • the channel coding unit 404 can also use the same channel coding for them; when the same channel coding is used, the near-end user equipment can uniformly decode the aligned high-power data stream to obtain more Accurate high-power data stream estimation, better for high-power data stream deletion.
  • the notification unit 408 notifies the corresponding vector of the received vector.
  • Remote user equipment and near-end user equipment are included in the notification unit 408 .
  • An embodiment of the present invention further provides a signal processing system, including: a base station and a near-end user equipment; the base station is configured to adjust a precoding vector of a high-power data stream, and multiply the pre-coding vector by a low-power data stream.
  • the effective receiving channel is equal to a non-zero constant; superimposing and encoding the low power data stream and the adjusted high power data stream; and transmitting the superimposed encoded data stream to the user equipment;
  • the superposed encoded data stream sent by the base station is detected, and the high power data stream and the low power data stream in the superposed encoded data stream are respectively decoded, and the high power data stream is deleted to obtain a near end user.
  • the disclosed apparatus and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. , including a number of instructions to make a computer device (which can be a personal computer, a server, Or a network device or the like) performing all or part of the steps of the method of the various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明实施例公开了一种信号处理方法以及相关设备，用于降低近端用户设备检测低功率信号所需要的天线数。本发明实施例方法包括：基站调节高功率数据流的预编码向量，使所述预编码向量乘以低功率数据流的有效接收信道等于一个常数；所述基站对所述低功率数据流与调节后的高功率数据流进行叠加编码；所述基站向用户设备发送所述叠加编码后的数据流，其中所述用户设备包括小区中心用户设备和小区边缘用户设备，所述高功率数据流为对所述小区中心用户设备的干扰信号，所述低功率数据流为对所述小区中心用户设备的有用信号。

Description

一种信号处理方法以及相关设备
本申请要求于 2012 年 7 月 26 日提交中国专利局、 申请号为 201210261420.6、 发明名称为"一种信号处理方法以及相关设备"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
本发明涉及通信领域， 尤其涉及一种信号处理方法以及相关设备。
背景技术
叠加编码 ( Superposition Coding )最早用于理论上证明广播信道的信道容 量。 其原理是： 把要发射的信息分层多个流， 其中第一个流用第一大的功率传 输， 第二个流用第二大的功率传输， 以此类推。 发射端把多个数据流进行叠加 同时发射。位于离发射端较远的接收机或者信道较差的接收机可以接收前几个 流， 而离发射端较近或者信道较好的接收机可以接收所有的流。 因此， 发射端 可以同时服务多个接收信号质量不同的接收机，并且根据它们的信道情况提供 不同的数据率， 从而提高吞吐量。
叠加编码的常用场景是： 基站向远端用户发射高功率数据流， 同时向近端 用户设备发送低功率信号； 在基站的发射信号空间中，低功率信号与高功率数 据流的复用同样的空间； 远端用户只检测高功率数据流， 而近端用户设备先检 测并消除高功率数据流再检测低功率信号。在现有技术中， 为了检测出高功率 数据流， 近端用户设备的天线数必须大于或者等于高功率数据流的总流数。 这 在^艮多情况下 （特别是多用户 ΜΙΜΟ )并不能够满足。
发明内容
本发明实施例提供了一种信号处理方法以及相关设备，用于降低近端用户 设备检测低功率信号所需要的天线数。
本发明提供的信号处理方法， 包括：
基站调节高功率数据流的预编码向量，使所述预编码向量乘以低功率数据 流的有效接收信道等于一个常数；
所述基站对所述低功率数据流与调节后的高功率数据流进行叠加编码； 所述基站向用户设备发送所述叠加编码后的数据流， 其中所述用户设备 包括小区中心用户设备和小区边缘用户设备，所述高功率数据流为对所述小区 中心用户设备的干扰信号，所述低功率数据流为对所述小区中心用户设备的有 用信号。
本发明提供的基站， 包括：
数据调节单元， 用于调节高功率数据流的预编码向量，使所述预编码向量 乘以低功率数据流的有效接收信道等于一个常数；
叠加编码单元，用于对所述低功率数据流与调节后的高功率数据流进行叠 力口编码；
数据发送单元， 用于向用户设备发送所述叠加编码后的数据流； 其中所述用户设备包括小区中心用户设备和小区边缘用户设备，所述高功 率数据流为对所述小区中心用户设备的干扰信号 ,所述低功率数据流为对所述 小区中心用户设备的有用信号。
从以上技术方案可以看出， 本发明实施例具有以下优点：
在本发明实施例中，基站在向用户设备发送数据流之前，对高功率数据流 的预编码向量进行调整，使得所述预编码向量乘以低功率数据流的有效接收信 道等于一个非零常数， 实现高功率数据流的空间对齐；从而使得近端的用户设 备在检测其需要删除的高功率数据流时，使用比所需检测的高功率数据流的流 数少的天线， 也可以检测出所有的高功率数据流。
附图说明
图 1是本发明实施例信号处理方法的一个流程示意图；
图 2是本发明实施例信号处理方法的另一个流程示意图；
图 3是本发明实施例信号处理方法的另一个流程示意图；
图 4是本发明实施例基站的逻辑结构示意图。
具体实施方式
本发明实施例提供了一种信号处理方法以及相关设备，用于降低近端用户 设备检测低功率信号所需要的天线数。
请参阅图 1 , 本发明实施例中信号处理方法的一个实施例包括：
101、 基站调节高功率数据流的预编码向量；
基站调节高功率数据流的预编码向量，使所述预编码向量乘以低功率数据 流的有效接收信道等于一个非零常数， 以实现高功率数据流的空间对齐。 所述空间对齐包括： 零空间对齐和信号空间对齐； 所述零空间对齐指的是 将高功率数据流对齐到近端用户设备的有效接收信道的零空间中；所述信号空 间对齐指的是高功率数据流在近端用户设备的有效接收信道的空间中实现信 号空间对齐， 即经过近端用户设备的接收向量后， 它们在近端用户设备处形成 的信号星座图完全一致。
102、 基站对所述低功率数据流与调节后的高功率数据流进行叠加编码； 基站对所述低功率数据流与调节后的高功率数据流进行叠加编码， 具体 的， 对进行信号空间对齐的高功率数据流需要使用相同的调制模式。
103、 基站向用户设备发送所述叠加编码后的数据流。
基站向用户设备发送所述叠加编码后的数据流， 具体的， 所述用户设备包 括近端用户设备和远端用户设备， 近端用户设备又称为小区中心用户设备， 远 端用户设备又称为小区边缘用户设备。
在本发明实施例中，基站在向用户设备发送数据流之前，对高功率数据流 的预编码向量进行调整，使得所述预编码向量乘以低功率数据流的有效接收信 道等于一个常数， 实现高功率数据流的空间对齐； 从而使得近端的用户设备在 检测其需要删除的高功率数据流时，使用比所需检测的高功率数据流的流数少 的天线， 也可以检测出所有的高功率数据流。
下面对适用于本发明的各个场景进行描述：
一、 基站向 M个远端用户发射 Ll L2, LM路高功率数据流， 与此同 时， 基站向一个近端用户设备发射一个低功率数据流， 请参阅图 2。
记基站到 M个远端用户的信道为 , ¾, ... , HM, 到近端用户设备的信 道为 I。 记基站对第 m个（m=l , 2, ... , M )远端用户的 LM个数据流的预编 码向量分别为 Pml, Pm2, PmM, 记第 m个（m=l , 2, M )远端用户 的 LM个数据流的接收矩阵为 QM , 近端用户设备的接收向量为 T。
201、 基站对待发送的高功率数据流进行分类；
基站对待发送的高功率数据流进行分类，具体分为进行零空间对齐的数据 流和进行信号空间对齐的数据流。
可选的， 基站可以对选择空间对齐的高功率数据流设定规则， 示例性的： 基站可以生成一个对齐方式的集合，所述集合中的每个元素对应一种对齐的分 配方式；再根据当前的信号发送情况分别每个所述分配方式所对应的总体系统 容量； 最后， 选择所述总体系统容量最大的所对应的分配方式， 并根据所述分 配方式选择对齐到发送给近端用户设备的信道零空间的高功率数据流，和对齐 到发送给近端用户设备的有效接收信道的高功率数据流。
202、 基站调节高功率数据流的预编码向量；
基站对远端用户使用 Zero-Forcing的多用户传输方式，使得给一个远端用 户的信号不会干扰另一个远端用户， 即 QMHm[Pnl , P^, PnM]=0 ( n≠m )。
可选的，若所述基站需要将发送给远端用户设备的所述高功率数据流对齐 到发送给近端用户设备的信道零空间中，则基站调节高功率数据流的预编码向 量， 使所述预编码向量乘以低功率数据流的有效接收信道等于零。 例如， 如果 基站要把给第 m 个远端用户的第 i 个数据流对齐到的零空间中， 要满足 TIPmi=0o
可选的，若所述基站需要将发送给远端用户设备的所述高功率数据流对齐 到发送给近端用户设备的有效接收信道中，则基站调节高功率数据流的预编码 向量， 使所述预编码向量乘以低功率数据流的有效接收信道 Y等于非零常数 a。 例如， 如果基站要对第 m个远端用户的第 i个数据流进行信号空间对齐， 则 P需要满足 TIPmi=a。 其中 α是个事先确定且对于所有信号空间对齐的数据 流都相等的非零常数。
203、 基站对所述低功率数据流与调节后的高功率数据流进行叠加编码； 基站对所述低功率数据流与调节后的高功率数据流进行叠加编码， 具体 的， 对进行空间对齐的高功率数据流需要使用相同的调制模式。
可选的，基站还可以对它们使用相同的信道编码；当釆用相同信道编码时， 近端用户设备可以统一对对齐后的高功率数据流进行解码 ,获得更加准确的高 功率数据流估计， 进行高功率数据流删除效果更好。
204、 基站向用户设备发送所述叠加编码后的数据流。
相对应的， 近端用户设备有如下处理方法：
进行高功率数据流（对于近端用户设备而言是干扰信号）和低功率信号（对 于近端用户设备而言是有用信号）的联合信号检测。该检测根据基站到近端用 户设备的信道、 高低功率信号的预编码器和高低功率信号的调制模式，检测解 调前的低功率信号和解调前若干个高功率数据流对齐后的信号。近端用户设备 先删除对齐后的高功率数据流， 最后， 近端用户设备对检测出的低功率信号进 行解调和解码。
可选的， 如果所有进行信号空间对齐的高功率数据流使用相同的信道编 码， 近端用户设备可以先对叠加后的高功率数据流进行解码， 以提高检测和删 除高功率数据流的准确度。 具体步骤如下：
根据基站到近端用户设备的信道，高低功率信号的预编码器和高低功率信 号的调制模式，检测出解调前若干个高功率数据流对齐后的信号； 根据现有技 术对对齐 (信号空间对齐）后的高功率数据流进行解调和解码， 重新构造干扰 信号 (对齐后的高功率数据流 )进行干扰消除；对低功率信号进行解调和解码。
二、 基站向 M个远端用户发射 ， Lj, LM路高功率数据流， 与此同 时， 基站向 N个近端用户设备发射 N (N小于或等于 M)个低功率数据流， 请参阅图 3。
记基站到 M个远端用户的信道为 , ¾, ..., HM, 到近端用户设备的信 道为 Ι Ι2, ..., IN。 记基站对第 m个（m=l, 2, ..., M)远端用户的 LM个 数据流的预编码向量分别为 PML, PM2, ..., ΡΠ,Μ, 对第 η个（η=1, 2, ..., Ν) 近端用户设备预编码向量为 SN。 记第 m个（m=l, 2, ..., Μ)远端用户的 LM个数据流的接收矩阵为 QM, 第 n个（n=l, 2, ..., N)近端用户设备的接 收向量为 TM。
301、 基站对待发送的高功率数据流进行分类；
基站对待发送的高功率数据流进行分类，具体分为进行零空间对齐的数据 流和进行信号空间对齐的数据流。
302、 基站调节高功率数据流的预编码向量；
对远端用户使用 Zero-Forcing 的多用户传输方式，使得给一个远端用户的 信号不会干扰另一个远端用户， 即 QmHm[Pnl, Ρ^, ..., ΡΗΜ]=0 ( m≠n λ
把近端用户设备的有效接收信道 TmIm调整到远端用户的有效接收信道
QmH„^成的空间中， 即 TmImEspan (QmHm)记第 m个（m=l, 2, ·.., M) 远端用户的 1^个数据流的接收矩阵为 QM (m=l, 2, ...,Ν)。其中 span(QmHm) 代表以 QmHm的行向量为基构成的向量子空间。每个远端用户的所有高功率数 据流在对应的近端用户设备处实施信号空间对齐。即 QmHM[PNL, ΡΗ2, ..., Ρ„Μ]= [tt!, α2, ..., αη] (η=1, 2, ..., Ν), 其中 αη为事先确定的非零常数。
303、 基站将接收向量 /矩阵通知相应的远端用户和近端用户设备；
304、 基站对所述低功率数据流与调节后的高功率数据流进行叠加编码； 基站对所述低功率数据流与调节后的高功率数据流进行叠加编码， 具体 的， 对进行空间对齐的高功率数据流需要使用相同的调制模式。
可选的，基站还可以对它们使用相同的信道编码；当釆用相同信道编码时， 接收端的近端用户设备可以统一对对齐后的高功率数据流进行解码，获得更加 准确的高功率数据流估计， 进行高功率数据流删除效果更好。
305、 基站向用户设备发送所述叠加编码后的数据流。
满足上述条件编码向量和接收向量可以有很多选择， 为了便于理解， 以下 给出一种计算预编码向量和接收向量的算法， 具体为：
对于 η=1, 2, 3, ..., Ν, 依次计算第 η个远端用户的接收矩阵和第 η个 近端用户设备的接收向量：
假定基站， 第 η个远端用户和第 η个近端用户设备各有根天线。
找到一个维度为 （b+c|a) (b+c) 的矩阵 Vn, 使得 Vn In =0且 VnVn"为单
Hn
位阵。 其中代表 的共轭转置。
记 Wn为 Vn的前个列向量构成的矩阵， Wn为矩阵 WnIn的 left singular matrix (假定 singular value是从大到小排列）。则第 n个近端用户设备的接收向量 Tn 为的第一个行向量。
找到 Χη使得 XnHn=TJn, 以 Xn作为第 n个远端用户接收矩阵（¾的第一个 行向量； 再生成 Qn的另外个行向量使得 Qn的秩为 Ln。
对于 N个近端用户设备，它们的预编码向量可以使用 Zero-Forcing的方法 计算，从而保证基站给一个近端用户设备的信号通过其他近端用户设备的接收 向量后将被消除。
对于 M个远端用户， 它们的预编码向量可以使用 Zero-Forcing的方法计 算， 从而保证满足 QMHm[Pnl, Ρη2, ..., ΡηΜ]=0 ( n≠m )0 同时调整基站发送给 第 1, 2, ..., Ν个远端用户的高功率数据流的功率和相位使得满足(¾1¾11[?111, Ρη2, ·.., PnM]= [«i , α2, ·.., αη] (η=1, 2, ·.., Ν )。
上面仅以一些例子对本发明实施例中的应用场景进行了说明 ,可以理解的 是， 在实际应用中， 还可以有更多的应用场景， 具体此处不作限定。 相对应的， 近端用户设备有如下处理方法：
进行高功率数据流（对于近端用户设备而言是干扰信号）和低功率信号（对 于近端用户设备而言是有用信号）的联合信号检测。该检测根据基站到近端用 户设备的信道、 高低功率信号的预编码器和高低功率信号的调制模式，检测解 调前的低功率信号和解调前若干个高功率数据流对齐后的信号。 最后， 近端用 户设备对检测出的低功率信号进行解调和解码。
可选的，在上述描述中若干个近端用户设备可以是同一个实际的近端用户 设备。 在这种情况下， 这些近端用户设备到基站的信道完全相同， 并且基站可 以利用这种方式向一个实际的近端用户设备发送多个低功率数据流。
可选的，在上述实施例中，选择空间对齐的高功率数据流可以有多种方式， 具体根据实际情况而定， 如， 可以对所有高功率数据流都进行零空间对齐； 也 可以对所有高功率数据流都进行信号空间对齐； 也可以部分进行零空间对齐， 剩余的高功率数据流进行信号空间对齐； 还可以部分进行零空间对齐， 剩余的 高功率数据流不作空间对齐（如， 当部分高功率数据流进行零空间对齐之后， 剩余的高功率数据流的流数不多于近端用户设备的天线数）；
可选的， 基站可以对选择空间对齐的高功率数据流设定规则， 示例性的： 基站可以生成一个对齐方式的集合，所述集合中的每个元素对应一种对齐的分 配方式（如上述的选择空间对齐的高功率数据流的多种方式）； 再根据当前的 信号发送情况分别每个所述分配方式所对应的总体系统容量； 最后，选择所述 总体系统容量最大的所对应的分配方式，并根据所述分配方式选择对齐到发送 给近端用户设备的信道零空间的高功率数据流，和对齐到发送给近端用户设备 的有效接收信道的高功率数据流。
下面对用于执行上述信号处理方法的本发明基站的实施例进行说明，其逻 辑结构请参考图 4, 本发明实施例中基站 40的一个实施例包括：
数据调节单元 401 , 用于调节高功率数据流的预编码向量， 使所述预编码 向量乘以低功率数据流的有效接收信道等于一个常数；
叠加编码单元 402, 用于对所述低功率数据流与调节后的高功率数据流进 行叠加编码； 数据发送单元 403 , 用于向用户设备发送所述叠加编码后的数据流。 可选的， 本发明实施例中的数据调节单元包括：
第一调节模块 4011 , 用于若所述基站需要将发送给远端用户设备的所述 高功率数据流对齐到发送给近端用户设备的信道零空间中，则调节高功率数据 流的预编码向量， 使所述预编码向量乘以低功率数据流的有效接收信道等于 令；
第二调节模块 4012, 用于若所述基站需要将发送给远端用户设备的所述 高功率数据流对齐到发送给近端用户设备的有效接收信道中，则调节高功率数 据流的预编码向量，使所述预编码向量乘以低功率数据流的有效接收信道等于 非零常数 α。
可选的， 本发明实施例中的基站还包括：
信道编码单元 404, 用于在对低功率数据流与调节后的高功率数据流进行 叠加编码之前，对所述对齐到发送给近端用户设备的有效接收信道的高功率数 据流， 使用相同的信道进行信道编码。
可选的， 本发明实施例中的基站还包括：
集合生成单元 405 , 用于生成一个对齐方式的集合， 所述集合中的每个元 素对应一种对齐的分配方式；
容量计算单元 406, 用于根据当前的信号发送情况分别每个所述分配方式 所对应的总体系统容量；
分配选择单元 407 , 用于选择所述总体系统容量最大的所对应的分配方 式，并根据所述分配方式选择对齐到发送给近端用户设备的信道零空间的高功 率数据流， 和对齐到发送给近端用户设备的有效接收信道的高功率数据流。
可选的， 本发明实施例中的基站还包括：
通知单元 408, 用于在对低功率数据流与调节后的高功率数据流进行叠加 编码之前， 将接收向量通知相应的远端用户设备和近端用户设备。
本发明实施例基站中各个单元具体的交互过程如下：
数据调节单元 401调节高功率数据流的预编码向量，使所述预编码向量乘 以低功率数据流的有效接收信道等于一个非零常数，以实现高功率数据流的空 间对齐。 所述空间对齐包括： 零空间对齐和信号空间对齐； 所述零空间对齐指 的是将高功率数据流对齐到近端用户设备的有效接收信道的零空间中；所述信 号空间对齐指的是高功率数据流在近端用户设备的有效接收信道的空间中实 现信号空间对齐， 即经过近端用户设备的接收向量后， 它们在近端用户设备处 形成的信号星座图完全一致。
具体的，若所述基站需要将发送给远端用户设备的所述高功率数据流对齐 到发送给近端用户设备的信道零空间中，则基站调节高功率数据流的预编码向 量，使所述预编码向量乘以低功率数据流的有效接收信道等于零。 若所述基站 需要将发送给远端用户设备的所述高功率数据流对齐到发送给近端用户设备 的有效接收信道中， 则基站调节高功率数据流的预编码向量，使所述预编码向 量乘以低功率数据流的有效接收信道 Y等于非零常数 a。
可选的， 在调整高功率数据流的预编码向量之前， 可以由集合生成单元 405生成一个对齐方式的集合， 所述集合中的每个元素对应一种对齐的分配方 式；再由容量计算单元 406根据当前的信号发送情况分别每个所述分配方式所 对应的总体系统容量； 最后， 由分配选择单元 407选择所述总体系统容量最大 的所对应的分配方式，并根据所述分配方式选择对齐到发送给近端用户设备的 信道零空间的高功率数据流，和对齐到发送给近端用户设备的有效接收信道的 高功率数据流。
叠加编码单元 402对所述低功率数据流与调节后的高功率数据流进行叠 加编码， 具体的，对进行信号空间对齐的高功率数据流需要使用相同的调制模 式。
可选的，在叠加编码之前，信道编码单元 404还可以对它们使用相同的信 道编码； 当釆用相同信道编码时， 近端用户设备可以统一对对齐后的高功率数 据流进行解码， 获得更加准确的高功率数据流估计， 进行高功率数据流删除效 果更好。
可选的， 若需要向多个近端用户设备发送所述低功率数据流， 则在对低功 率数据流与调节后的高功率数据流进行叠加编码之前，通知单元 408将接收向 量通知相应的远端用户设备和近端用户设备。
在完成叠加编码之后 ,数据发送单元 403向用户设备发送所述叠加编码后 的数据流。 本发明实施例还提供了一种信号处理系统， 包括： 基站和近端用户设备； 所述基站用于调节高功率数据流的预编码向量，使所述预编码向量乘以低 功率数据流的有效接收信道等于一个非零常数；对所述低功率数据流与调节后 的高功率数据流进行叠加编码； 向用户设备发送所述叠加编码后的数据流； 所述近端用户设备对所述基站发送的所述叠加编码后的数据流进行检测， 分别对所述叠加编码后的数据流中的高功率数据流和低功率数据流进行解码， 删除所述高功率数据流， 得到近端用户设备所需要的低功率数据流。
本发明实施例中的一种信号处理系统的实施方式可以参考上述图 2和图 3 的实施例， 此处不再赘述。
在本申请所提供的几个实施例中，应该理解到， 所揭露的装置和方法可以 通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如， 所述单元的划分，仅仅为一种逻辑功能划分， 实际实现时可以有另外的划分方 式， 例如多个单元或组件可以结合或者可以集成到另一个系统， 或一些特征可 以忽略， 或不执行。 另一点， 所显示或讨论的相互之间的耦合或直接耦合或通 信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性， 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为 单元显示的部件可以是或者也可以不是物理单元， 即可以位于一个地方， 或者 也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部 单元来实现本实施例方案的目的。
另外， 在本发明各个实施例中的各功能单元可以集成在一个处理单元中， 也可以是各个单元单独物理存在 ,也可以两个或两个以上单元集成在一个单元 中。上述集成的单元既可以釆用硬件的形式实现，也可以釆用软件功能单元的 形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售 或使用时， 可以存储在一个计算机可读取存储介质中。 基于这样的理解， 本发 明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全 部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储 介质中， 包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器， 或者网络设备等 )执行本发明各个实施例所述方法的全部或部分步骤。 而前述 的存储介质包括： U盘、 移动硬盘、 只读存储器（ROM, Read-Only Memory ), 随机存取存储器（RAM, Random Access Memory ), 磁碟或者光盘等各种可以 存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于 此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想到 变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护范围应 所述以权利要求的保护范围为准。

Claims

权 利 要 求
1、 一种信号处理方法， 其特征在于， 包括：
基站调节高功率数据流的预编码向量，使所述预编码向量乘以低功率数据 流的有效接收信道等于一个常数；
所述基站对所述低功率数据流与调节后的高功率数据流进行叠加编码； 所述基站向用户设备发送所述叠加编码后的数据流， 其中所述用户设备 包括小区中心用户设备和小区边缘用户设备，所述高功率数据流为对所述小区 中心用户设备的干扰信号，所述低功率数据流为对所述小区中心用户设备的有 用信号。
2、 根据权利要求 1所述的方法， 其特征在于， 若所述基站需要将发送给 所述边缘用户设备的所述高功率数据流对齐到发送给所述小区中心用户设备 的信道零空间中， 则所述调节高功率数据流的预编码向量，使所述预编码向量 乘以低功率数据流的有效接收信道等于一个常数， 包括：
调节高功率数据流的预编码向量，使所述预编码向量乘以低功率数据流的 有效接收信道等于零。
3、 根据权利要求 2所述的方法， 其特征在于， 若所述基站需要将发送给 小区边缘用户设备的所述高功率数据流对齐到发送给小区中心用户设备的有 效接收信道中， 则所述调节高功率数据流的预编码向量，使所述预编码向量乘 以低功率数据流的有效接收信道等于一个常数， 包括：
调节高功率数据流的预编码向量，使所述预编码向量乘以低功率数据流的 有效接收信道等于非零常数 α, 所述 a对于所有信号空间对齐的数据流都相 等。
4、 根据权利要求 3所述的方法， 其特征在于， 所述对低功率数据流与调 节后的高功率数据流进行叠加编码之前， 包括：
对所述对齐到发送给小区中心用户设备的有效接收信道的高功率数据流， 使用相同的信道进行信道编码。
5、 根据权利要求 3所述的方法， 其特征在于， 所述调节高功率数据流的 预编码向量之前， 包括：
生成一个对齐方式的集合，所述集合中的每个元素对应一种对齐的分配方 式；
根据当前的信号发送情况分别每个所述分配方式所对应的总体系统容量； 选择所述总体系统容量最大的所对应的分配方式，并根据所述分配方式选 择对齐到发送给小区中心用户设备的信道零空间的高功率数据流，和对齐到发 送给小区中心用户设备的有效接收信道的高功率数据流。
6、 根据权利要求 1至 5任意一项所述的方法， 其特征在于， 若需要向多 个小区中心用户设备发送所述低功率数据流，则所述对低功率数据流与调节后 的高功率数据流进行叠加编码之前， 包括：
将接收向量通知相应的所述小区边缘用户设备和所述小区中心用户设备。
7、 一种基站， 其特征在于， 包括：
数据调节单元， 用于调节高功率数据流的预编码向量，使所述预编码向量 乘以低功率数据流的有效接收信道等于一个常数；
叠加编码单元，用于对所述低功率数据流与调节后的高功率数据流进行叠 力口编码；
数据发送单元， 用于向用户设备发送所述叠加编码后的数据流； 其中所述用户设备包括小区中心用户设备和小区边缘用户设备，所述高功 率数据流为对所述小区中心用户设备的干扰信号 ,所述低功率数据流为对所述 小区中心用户设备的有用信号。
8、 根据权利要求 7所述的方法， 其特征在于， 所述数据调节单元包括： 第一调节模块，用于若所述基站需要将发送给小区边缘用户设备的所述高 功率数据流对齐到发送给小区中心用户设备的信道零空间中，则调节高功率数 据流的预编码向量，使所述预编码向量乘以低功率数据流的有效接收信道等于 令；
第二调节模块，用于若所述基站需要将发送给小区边缘用户设备的所述高 功率数据流对齐到发送给小区中心用户设备的有效接收信道中，则调节高功率 数据流的预编码向量，使所述预编码向量乘以低功率数据流的有效接收信道等 于非零常数 α, 所述 α对于所有信号空间对齐的数据流都相等。
9、 根据权利要求 8所述的方法， 其特征在于， 所述基站还包括： 信道编码单元，用于在对低功率数据流与调节后的高功率数据流进行叠加 编码之前，对所述对齐到发送给小区中心用户设备的有效接收信道的高功率数 据流， 使用相同的信道进行信道编码。
10、 根据权利要求 8所述的方法， 其特征在于， 所述基站还包括： 集合生成单元， 用于生成一个对齐方式的集合， 所述集合中的每个元素对 应一种对齐的分配方式；
容量计算单元，用于根据当前的信号发送情况分别每个所述分配方式所对 应的总体系统容量；
分配选择单元， 用于选择所述总体系统容量最大的所对应的分配方式， 并 根据所述分配方式选择对齐到发送给小区中心用户设备的信道零空间的高功 率数据流， 和对齐到发送给小区中心用户设备的有效接收信道的高功率数据 流。
11、 根据权利要求 7所述的方法， 其特征在于， 所述基站还包括： 通知单元，用于在对低功率数据流与调节后的高功率数据流进行叠加编码 之前， 将接收向量通知相应的小区边缘用户设备和小区中心用户设备。
12、 一种信号处理系统， 其特征在于， 包括： 基站和小区中心用户设备； 所述基站用于调节高功率数据流的预编码向量，使所述预编码向量乘以低 功率数据流的有效接收信道等于一个非零常数；对所述低功率数据流与调节后 的高功率数据流进行叠加编码； 向用户设备发送所述叠加编码后的数据流； 所述小区中心用户设备对所述基站发送的所述叠加编码后的数据流进行 检测 ,分别对所述叠加编码后的数据流中的高功率数据流和低功率数据流进行 解码，删除所述高功率数据流，得到小区中心用户设备所需要的低功率数据流。
PCT/CN2013/073328 2012-07-26 2013-03-28 一种信号处理方法以及相关设备 WO2014015681A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/601,734 US9468009B2 (en) 2012-07-26 2015-01-21 Signal processing method and related device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210261420.6A CN103580740B (zh) 2012-07-26 2012-07-26 一种信号处理方法以及相关设备
CN201210261420.6 2012-07-26

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/601,734 Continuation US9468009B2 (en) 2012-07-26 2015-01-21 Signal processing method and related device

Publications (1)

Publication Number Publication Date
WO2014015681A1 true WO2014015681A1 (zh) 2014-01-30

Family

ID=49996555

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/073328 WO2014015681A1 (zh) 2012-07-26 2013-03-28 一种信号处理方法以及相关设备

Country Status (3)

Country Link
US (1) US9468009B2 (zh)
CN (1) CN103580740B (zh)
WO (1) WO2014015681A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105981306A (zh) * 2014-02-07 2016-09-28 阿尔卡特朗讯 用于低功率模式的向量化
WO2016163099A1 (en) * 2015-04-07 2016-10-13 Sony Corporation Reception device, transmission device, reception method, transmission method, and program

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018093256A (ja) * 2015-04-20 2018-06-14 シャープ株式会社 端末装置および基地局装置
US9590706B1 (en) * 2015-09-16 2017-03-07 Motorola Mobility Llc Method and apparatus for equal energy codebooks for antenna arrays with mutual coupling
CN106936750B (zh) * 2015-12-30 2019-12-17 北京信威通信技术股份有限公司 数据传输方法及装置
CN110024300A (zh) * 2016-12-01 2019-07-16 瑞典爱立信有限公司 叠加编码的波束成形

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101627583A (zh) * 2006-05-17 2010-01-13 Lg电子株式会社 一种在无线通信系统中对前向链路实现叠加编码的方法
US20100046644A1 (en) * 2008-08-19 2010-02-25 Motorola, Inc. Superposition coding
CN101989890A (zh) * 2009-07-31 2011-03-23 华为技术有限公司 叠加编码的方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7729232B2 (en) 2006-02-01 2010-06-01 Lg Electronics Inc. Method of transmitting and receiving data using superposition modulation in a wireless communication system
US8374257B2 (en) 2006-06-16 2013-02-12 Samsung Electronics Co., Ltd. System and method for superposition coding and interference cancellation in a MIMO system
ATE535063T1 (de) * 2008-02-25 2011-12-15 Ericsson Telefon Ab L M Verfahren und einrichtung zum vorcodieren von sendedatensignalen in einem drahtlosen mimo- kommunikationssystem
KR101578012B1 (ko) * 2011-07-28 2015-12-28 엘지전자 주식회사 무선 접속 시스템에서 하향링크 제어정보 송수신 방법 및 이를 위한 단말
EP2590336A1 (en) * 2011-11-07 2013-05-08 Panasonic Corporation Precoding matrix set quality measurement and reporting
WO2014039098A1 (en) * 2012-09-04 2014-03-13 Ntt Docomo, Inc. Method and apparatus for internal relative transceiver calibration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101627583A (zh) * 2006-05-17 2010-01-13 Lg电子株式会社 一种在无线通信系统中对前向链路实现叠加编码的方法
US20100046644A1 (en) * 2008-08-19 2010-02-25 Motorola, Inc. Superposition coding
CN101989890A (zh) * 2009-07-31 2011-03-23 华为技术有限公司 叠加编码的方法及装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105981306A (zh) * 2014-02-07 2016-09-28 阿尔卡特朗讯 用于低功率模式的向量化
CN105981306B (zh) * 2014-02-07 2018-11-13 阿尔卡特朗讯 用于低功率模式向量化的方法和装置
WO2016163099A1 (en) * 2015-04-07 2016-10-13 Sony Corporation Reception device, transmission device, reception method, transmission method, and program
EP3522434A1 (en) 2015-04-07 2019-08-07 Sony Corporation Reception device, transmission device, reception method, transmission method, and program
US10516511B2 (en) 2015-04-07 2019-12-24 Sony Corporation Reception device, transmission device, reception method, transmission method, and program related to allocation of parameters to signals
US11057173B2 (en) 2015-04-07 2021-07-06 Sony Corporation Reception device, transmission device, reception method, transmission method, and program related to allocation of parameters to signals

Also Published As

Publication number Publication date
US9468009B2 (en) 2016-10-11
CN103580740B (zh) 2017-09-19
CN103580740A (zh) 2014-02-12
US20150139148A1 (en) 2015-05-21

Similar Documents

Publication Publication Date Title
US9806776B2 (en) Communication system and method using space division multi-user multiple input multiple output (SD-MIMO) communication method
WO2014015681A1 (zh) 一种信号处理方法以及相关设备
KR101441672B1 (ko) 무선 통신 시스템에서 주파수 선택적 채널에 대한 ｍｉｍｏ 빔포밍을 위한 기술
TW201212587A (en) Method and system of operating a multi-user system
WO2010105400A1 (zh) 一种数据传输方法、通讯系统以及相关设备
WO2015101017A1 (zh) 一种基于部分干扰对齐的协调波束赋形方法及装置
Yu et al. Combating inter-cell interference in 802.11 ac-based multi-user MIMO networks
WO2012129937A1 (zh) 一种多基站多用户下行传输的分布式预处理方法和系统
JP2009049604A (ja) 送信装置、及びビームフォーミング行列生成方法
US8098746B2 (en) Apparatus and method for transmitting/receiving data in a closed-loop multi-antenna system
KR20200079543A (ko) 신호 스크램블링, 디스크램블링 방법 및 장치, 설비, 기억매체
CN102696180A (zh) 空间信道状态反馈方法和装置
EP3872999A1 (en) Electronic device, communication method, and medium
JP2009272942A (ja) 受信装置、無線通信システム、チャネルベクトルの量子化方法、及びマルチストリームの伝送方法
WO2011023079A1 (zh) 实现CoMP场景下多用户MIMO的方法、装置及系统
Gui et al. LensCast: Robust wireless video transmission over mmWave MIMO with lens antenna array
WO2014071737A1 (zh) 阵列天线及发射接收信号方法、装置
WO2013078743A1 (zh) 协作多点多用户mimo系统的预编码方法及矩阵生成装置
WO2013127129A1 (zh) 一种信号传输方法、装置及系统
JP5121368B2 (ja) 受信装置
WO2011012043A1 (zh) 多天线发射方法及装置
US20090285324A1 (en) Apparatus and method for spatial multiplexing in multi input multi output system
WO2009094797A9 (zh) 利用部分csi反馈的正交投影预编码和解码方法及其设备
Tashiro et al. Joint transmission and coding scheme for high-resolution video streams over multiuser MIMO-OFDM systems
WO2013185525A1 (zh) 多点协作的传输装置及方法、通信系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13823663

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13823663

Country of ref document: EP

Kind code of ref document: A1