Multi-user MIMO method, apparatus and communication system for transmitting signal
    1.
    发明授权
    Multi-user MIMO method, apparatus and communication system for transmitting signal 有权
    多用户MIMO方法,用于发送信号的装置和通信系统

    公开(公告)号:US08218668B2

    公开(公告)日:2012-07-10

    申请号:US12510632

    申请日:2009-07-28

    IPC分类号: H04B7/02

    CPC分类号: H04B7/0443 H04B7/0465

    摘要: A multi-user multi-input multi-output (MIMO) method for transmitting signal with a includes: performing a Tomlinson-Harashima pre-coding (THP) on raw data; decomposing a channel matrix to a product of a block triangular matrix and a unitary matrix, and generating a signal to be transmitted by performing a forward filtering on the THP coded data by using the unitary matrix. A multi-user MIMO apparatus for transmitting signal includes an interference pre-eliminating unit, a modulo unit, a forward filtering unit, and a channel matrix decomposing unit. A multi-user MIMO communication system is further provided.

    摘要翻译: 一种用于发送信号的多用户多输入多输出(MIMO)方法,包括:对原始数据执行Tomlinson-Harashima预编码(THP); 将信道矩阵分解为块三角矩阵和酉矩阵的乘积,并且通过使用酉矩阵对THP编码数据执行正向滤波来生成要发送的信号。 用于发送信号的多用户MIMO装置包括干扰预消除单元,模单元,正向滤波单元和信道矩阵分解单元。 还提供了一种多用户MIMO通信系统。

    Method and device for feeding back and receiving downlink channel information
    2.
    发明授权
    Method and device for feeding back and receiving downlink channel information 有权
    用于反馈和接收下行链路信道信息的方法和装置

    公开(公告)号:US08411727B2

    公开(公告)日:2013-04-02

    申请号:US12429409

    申请日:2009-04-24

    IPC分类号: H04B1/00

    摘要: A method and a device for feeding back and receiving downlink channel information are disclosed, whereby spectrum utilization ratio of downlink channel information feedback is enhanced. According to the present invention, a wireless terminal superposes an uplink user information sequence with spectrum-spread downlink channel information before transmission. A network side de-spreads a received signal before estimating the downlink channel information, and then detects the user information sequence after subtracting the estimated downlink channel information from the received signal. An orthogonal code can be employed to spread the spectrum of the downlink channel information. The wireless terminal and base station use a plurality of antennas for transmission and reception.

    摘要翻译: 公开了一种用于反馈和接收下行链路信道信息的方法和装置,由此提高了下行链路信道反馈的频谱利用率。 根据本发明,无线终端在传输之前将上行用户信息序列与扩频下行信道信息叠加。 网络侧在估计下行链路信道信息之前解扩接收信号,然后在从接收到的信号中减去估计的下行链路信道信息之后检测用户信息序列。 可以采用正交码来扩展下行链路信道信息的频谱。 无线终端和基站使用多个天线进行发送和接收。

    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams
    3.
    发明授权
    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams 有权
    用于形成时分双工多输入多输出下行链路波束的方法,装置和系统

    公开(公告)号:US08264982B2

    公开(公告)日:2012-09-11

    申请号:US12825099

    申请日:2010-06-28

    IPC分类号: H04B7/02 H04W24/00 H04L5/14

    摘要: In a method for forming TDD MIMO downlink beams, a BS receives an index of a codebook element from a mobile terminal. The codebook element refers to a codebook element whose correlation value has a greatest modulus value among correlation values that are calculated by the mobile terminal and are about correlation between the codebook element and a channel corresponding to a non-transmitting antenna of the mobile terminal. The BS calculates a channel vector corresponding to the non-transmitting antenna of the mobile terminal. The BS calculates channel vectors of the transmitting antennas of the mobile terminal, and performs SVD to determine a best transmitting precoding matrix.

    摘要翻译: 在形成TDD MIMO下行链路波束的方法中,BS从移动终端接收码本元素的索引。 码本元素是指码本元素,其相关值在由移动终端计算的相关值中具有最大的模数值,并且涉及码本元素与对应于移动终端的非发送天线的信道之间的相关性。 BS计算与移动终端的非发送天线相对应的信道向量。 BS计算移动终端的发送天线的信道向量,并执行SVD以确定最佳发送预编码矩阵。

    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams
    4.
    发明授权
    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams 有权
    用于形成时分双工多输入多输出下行链路波束的方法,装置和系统

    公开(公告)号:US08355351B2

    公开(公告)日:2013-01-15

    申请号:US12825065

    申请日:2010-06-28

    IPC分类号: H04J3/00

    摘要: A method, an apparatus, and a system for forming Time Division Duplex (TDD) Multi-Input Multi-Output (MIMO) downlink beams are disclosed herein. The method includes: generating a transmitting beam of a first data stream according to a Maximum Rate Transmission (MRT) criterion; and generating transmitting beams of other data streams except the first data stream, wherein the transmitting beams of other data streams are confined in a null space of the transmitting beam of the first data stream. Through the embodiments of the present invention, the Base Station obtains precise Partial Channel State Information by using only reciprocity without requiring feedback information, and thus the calculation is simplified and the rate of data streams is improved.

    摘要翻译: 本文公开了一种用于形成时分双工(TDD)多输入多输出(MIMO)下行链路波束的方法,装置和系统。 该方法包括:根据最大速率传输(MRT)标准产生第一数据流的发射波束; 以及生成除第一数据流之外的其他数据流的发送波束,其中其他数据流的发送波束被限制在第一数据流的发送波束的零空间中。 通过本发明的实施例,基站通过仅使用互易而不需要反馈信息来获得精确的部分信道状态信息,从而简化了计算,并提高了数据流的速率。

    METHOD, APPARATUS AND SYSTEM FOR FORMING TIME DIVISION DUPLEX MULTI-INPUT MULTI-OUTPUT DOWNLINK BEAMS
    5.
    发明申请
    METHOD, APPARATUS AND SYSTEM FOR FORMING TIME DIVISION DUPLEX MULTI-INPUT MULTI-OUTPUT DOWNLINK BEAMS 有权
    方法,形成时分双工多输入多输出下行链路的装置和系统

    公开(公告)号:US20100265855A1

    公开(公告)日:2010-10-21

    申请号:US12825065

    申请日:2010-06-28

    IPC分类号: H04B7/02 H04J3/00 H04L5/14

    摘要: A method, an apparatus, and a system for forming Time Division Duplex (TDD) Multi-Input Multi-Output (MIMO) downlink beams are disclosed herein. The method includes: generating a transmitting beam of a first data stream according to a Maximum Rate Transmission (MRT) criterion; and generating transmitting beams of other data streams except the first data stream, wherein the transmitting beams of other data streams are confined in a null space of the transmitting beam of the first data stream. Through the embodiments of the present invention, the Base Station obtains precise Partial Channel State Information by using only reciprocity without requiring feedback information, and thus the calculation is simplified and the rate of data streams is improved.

    摘要翻译: 本文公开了一种用于形成时分双工(TDD)多输入多输出(MIMO)下行链路波束的方法,装置和系统。 该方法包括:根据最大速率传输(MRT)标准产生第一数据流的发射波束; 以及生成除第一数据流之外的其他数据流的发送波束,其中其他数据流的发送波束被限制在第一数据流的发送波束的零空间中。 通过本发明的实施例,基站通过仅使用互易而不需要反馈信息来获得精确的部分信道状态信息,从而简化了计算,并提高了数据流的速率。

    Method, Apparatus and System for Forming Time Division Duplex Multi-Input Multi-Output Downlink Beams
    6.
    发明申请
    Method, Apparatus and System for Forming Time Division Duplex Multi-Input Multi-Output Downlink Beams 有权
    用于形成时分双工多输入多输出下行链路的方法,装置和系统

    公开(公告)号:US20100265843A1

    公开(公告)日:2010-10-21

    申请号:US12825099

    申请日:2010-06-28

    IPC分类号: H04B7/02 H04W24/00 H04L5/14

    摘要: In a method for forming TDD MIMO downlink beams, a BS receives an index of a codebook element from a mobile terminal. The codebook element refers to a codebook element whose correlation value has a greatest modulus value among correlation values that are calculated by the mobile terminal and are about correlation between the codebook element and a channel corresponding to a non-transmitting antenna of the mobile terminal. The BS calculates a channel vector corresponding to the non-transmitting antenna of the mobile terminal. The BS calculates channel vectors of the transmitting antennas of the mobile terminal, and performs SVD to determine a best transmitting precoding matrix.

    摘要翻译: 在形成TDD MIMO下行链路波束的方法中,BS从移动终端接收码本元素的索引。 码本元素是指码本元素,其相关值在由移动终端计算的相关值中具有最大的模数值,并且涉及码本元素与对应于移动终端的非发送天线的信道之间的相关性。 BS计算与移动终端的非发送天线相对应的信道向量。 BS计算移动终端的发送天线的信道向量,并执行SVD以确定最佳发送预编码矩阵。