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    Feedback and user scheduling for multi-user multiple input multiple output (MU-MIMO) system
    1.
    发明授权
    Feedback and user scheduling for multi-user multiple input multiple output (MU-MIMO) system 有权
    多用户多输入多输出（MU-MIMO）系统的反馈和用户调度

    公开(公告)号：US08611447B1

    公开(公告)日：2013-12-17

    申请号：US12713064

    申请日：2010-02-25

    申请人： Krishna Srikanth Gomadam ,  Yu-Ngok Li ,  Daniel Yellin

    发明人： Krishna Srikanth Gomadam ,  Yu-Ngok Li ,  Daniel Yellin

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0452 ,  H04B7/0456 ,  H04B7/0632 ,  H04B7/0639

    摘要： Some of the embodiments of the present disclosure provide a method comprising selecting, by a user equipment (UE), a preferred interference precoding matrix from a plurality of candidate precoding matrices included in a codebook; and transmitting, by the user equipment to a communication node, a preferred interference precoding matrix index (PMI) corresponding to the preferred interference precoding matrix included in the codebook. Other embodiments are also described and claimed.

    摘要翻译： 本公开的一些实施例提供了一种方法，包括由用户设备（UE）从包括在码本中的多个候选预编码矩阵中选择优选的干扰预编码矩阵; 以及由所述用户设备向通信节点发送与所述码本中包含的优选干扰预编码矩阵相对应的优选干扰预编码矩阵索引（PMI）。 还描述和要求保护其他实施例。

    Feedback Strategies for Multi-User MIMO Communication Systems
    2.
    发明申请
    Feedback Strategies for Multi-User MIMO Communication Systems 有权
    多用户MIMO通信系统的反馈策略

    公开(公告)号：US20100254474A1

    公开(公告)日：2010-10-07

    申请号：US12723645

    申请日：2010-03-14

    申请人： Krishna Srikanth Gomadam ,  Daniel Yellin ,  Yu-Ngok Li

    发明人： Krishna Srikanth Gomadam ,  Daniel Yellin ,  Yu-Ngok Li

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0452 ,  H04B7/0417 ,  H04B7/0632

    摘要： A method for signal processing in a receiver includes receiving in the receiver a Multi-User Multiple-Input Multiple-Output (MU-MIMO) signal. The MU-MIMO signal includes at least a first signal, which is precoded using a first precoding scheme and is addressed to the receiver, and a second signal, which is precoded using a second precoding scheme. An average error rate achievable in decoding the first signal in the presence of the second signal is computed. The average error rate is computed over a set of possible choices of the second precoding scheme. The first precoding scheme is selected from among a plurality of available precoding schemes so as to satisfy a criterion defined over the average error rate. The receiver sends feedback to a transmitter transmitting the first signal. The feedback depends on the selected first precoding scheme and causes the transmitter to control transmission of the first signal.

    摘要翻译： 一种接收机中的信号处理方法包括在接收机中接收多用户多输入多输出（MU-MIMO）信号。 MU-MIMO信号至少包括第一信号，其使用第一预编码方案进行预编码，并且被寻址到接收机;以及第二信号，其使用第二预编码方案被预编码。 计算在存在第二信号时对第一信号进行解码时可实现的平均误码率。 在第二预编码方案的一组可能选择上计算平均错误率。 从多个可用预编码方案中选择第一预编码方案，以便满足在平均错误率上定义的标准。 接收机向发送第一个信号的发射机发送反馈。 反馈取决于所选择的第一预编码方案，并且使得发射机控制第一信号的传输。

    Feedback strategies for multi-user MIMO communication systems
    3.
    发明授权
    Feedback strategies for multi-user MIMO communication systems 有权
    多用户MIMO通信系统的反馈策略

    公开(公告)号：US08457236B2

    公开(公告)日：2013-06-04

    申请号：US12723645

    申请日：2010-03-14

    申请人： Krishna Srikanth Gomadam ,  Daniel Yellin ,  Yu-Ngok Li

    发明人： Krishna Srikanth Gomadam ,  Daniel Yellin ,  Yu-Ngok Li

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0452 ,  H04B7/0417 ,  H04B7/0632

    摘要： A method for signal processing in a receiver includes receiving in the receiver a Multi-User Multiple-Input Multiple-Output (MU-MIMO) signal. The MU-MIMO signal includes at least a first signal, which is precoded using a first precoding scheme and is addressed to the receiver, and a second signal, which is precoded using a second precoding scheme. An average error rate achievable in decoding the first signal in the presence of the second signal is computed. The average error rate is computed over a set of possible choices of the second precoding scheme. The first precoding scheme is selected from among a plurality of available precoding schemes so as to satisfy a criterion defined over the average error rate. The receiver sends feedback to a transmitter transmitting the first signal. The feedback depends on the selected first precoding scheme and causes the transmitter to control transmission of the first signal.

    摘要翻译： 一种接收机中的信号处理方法包括在接收机中接收多用户多输入多输出（MU-MIMO）信号。 MU-MIMO信号至少包括第一信号，其使用第一预编码方案进行预编码，并且被寻址到接收机;以及第二信号，其使用第二预编码方案被预编码。 计算在存在第二信号的情况下解码第一信号时可实现的平均错误率。 在第二预编码方案的一组可能选择上计算平均错误率。 从多个可用预编码方案中选择第一预编码方案，以便满足在平均错误率上定义的标准。 接收机向发送第一个信号的发射机发送反馈。 反馈取决于所选择的第一预编码方案，并且使得发射机控制第一信号的传输。

    Precoding codebooks for MIMO communication systems
    4.
    发明授权
    Precoding codebooks for MIMO communication systems 有权
    MIMO通信系统的预编码码书

    公开(公告)号：US08391392B2

    公开(公告)日：2013-03-05

    申请号：US12652044

    申请日：2010-01-05

    申请人： Ezer Melzer ,  Yu-Ngok Li ,  Adoram Erell ,  Daniel Yellin

    发明人： Ezer Melzer ,  Yu-Ngok Li ,  Adoram Erell ,  Daniel Yellin

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/063

    摘要： A method includes configuring a transmitter and a receiver with first precoding matrices for mapping onto N transmit antenna ports of the transmitter R1≦N data streams. Each first precoding matrix is derived from respective second and third precoding matrices, which are configured for mapping onto respective numbers of antenna ports that are less than N. A set of precoding matrices is defined for mapping r

    摘要翻译： 一种方法包括：配置具有第一预编码矩阵的发射机和接收机，用于映射到发射机R1和N1E的N个发射天线端口; N个数据流。 每个第一预编码矩阵从相应的第二和第三预编码矩阵导出，其被配置用于映射到小于N的相应数量的天线端口。定义一组预编码矩阵用于将r

    PRECODING CODEBOOKS FOR MIMO COMMUNICATION SYSTEMS
    5.
    发明申请
    PRECODING CODEBOOKS FOR MIMO COMMUNICATION SYSTEMS 有权
    MIMO通信系统的预编码

    公开(公告)号：US20100172430A1

    公开(公告)日：2010-07-08

    申请号：US12652044

    申请日：2010-01-05

    申请人： Ezer Melzer ,  Yu-Ngok Li ,  Adoram Erell ,  Daniel Yellin

    发明人： Ezer Melzer ,  Yu-Ngok Li ,  Adoram Erell ,  Daniel Yellin

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/063

    摘要： A method for communication includes configuring a communication system that includes a transmitter and a receiver with first precoding matrices for mapping up to N data streams onto N transmit antenna ports of the transmitter. Each of at least some of the first precoding matrices are derived from respective second and third precoding matrices configured for mapping onto respective numbers of transmit antenna ports that are less than N. The data streams are mapped onto the N transmit antenna ports using a precoding scheme based on one of the first precoding matrices. The mapped data streams are transmitted over the N transmit antenna ports from the transmitter to the receiver.

    摘要翻译： 一种用于通信的方法包括：配置具有第一预编码矩阵的发射机和接收机的通信系统，用于将多达N个数据流映射到发射机的N个发射天线端口。 至少一些第一预编码矩阵中的每一个从被配置用于映射到小于N的相应数量的发射天线端口的相应的第二和第三预编码矩阵导出。使用预编码方案将数据流映射到N个发射天线端口 基于第一预编码矩阵之一。 映射的数据流通过N个发射天线端口从发射机发射到接收机。

    Precoding with multi-user codebooks
    7.
    发明授权
    Precoding with multi-user codebooks 有权
    多用户码本进行预编码

    公开(公告)号：US07995528B1

    公开(公告)日：2011-08-09

    申请号：US12167788

    申请日：2008-07-03

    申请人： Raphael Cendrillon ,  Yu-Ngok Li

    发明人： Raphael Cendrillon ,  Yu-Ngok Li

    IPC分类号： H04W4/00

    CPC分类号： H04B7/0452 ,  H04B7/0417 ,  H04W72/046 ,  H04W72/082

    摘要： A cellular system utilizes different codebooks of precoding vectors for different receivers within a particular cell. A set of different codebooks is designed and then used by a base station as a basis to allocate to various receivers in a dynamic fashion. In at least some embodiments, the codebooks are designed to be non-overlapping in angular space. For example, codebooks can be designed to be generally orthogonal to one another thereby increasing the separation between receivers that use the different codebooks. In at least some embodiments, codebooks can be allocated responsive to a determination that two or more receivers are geographically proximate one another in a manner which would permit an undesirable amount of interference. In yet other embodiments, codebooks can be allocated in a more random fashion.

    摘要翻译： 蜂窝系统利用特定小区内不同接收机的不同码本预编码向量。 一组不同的码本被设计，然后由基站使用，作为以动态方式分配给各种接收机的基础。 在至少一些实施例中，码本被设计为在角度空间中不重叠。 例如，码本可以被设计成大体上彼此正交，从而增加使用不同码本的接收机之间的间隔。 在至少一些实施例中，可以响应于确定两个或更多个接收机以允许不期望的干扰量的方式在地理上彼此接近的确定来分配码本。 在其他实施例中，可以以更随机的方式分配码本。

    Precoding with multi-user codebooks
    9.
    发明授权
    Precoding with multi-user codebooks 有权
    多用户码本进行预编码

    公开(公告)号：US08503384B1

    公开(公告)日：2013-08-06

    申请号：US13204966

    申请日：2011-08-08

    申请人： Raphael Cendrillon ,  Yu-Ngok Li

    发明人： Raphael Cendrillon ,  Yu-Ngok Li

    IPC分类号： H04W4/00

    CPC分类号： H04B7/0452 ,  H04B7/0417 ,  H04W72/046 ,  H04W72/082

    摘要： A base station including a plurality of codebooks embodied on a computer readable storage medium. The base station further includes a transceiver configured to i) notify a first receiver of a first codebook of the plurality of codebooks to be used for transmissions between the base station and the first receiver, ii) notify a second receiver of a second codebook of the plurality of codebooks to be used for transmissions between the base station and the second receiver, iii) receive, from the first receiver, a first precoding vector from the set of precoding vectors in the first codebook, iv) receive, from the second receiver, a second precoding vector from the set of precoding vectors in the second codebook, v) transmit, in accordance with the first precoding vector, first data to the first receiver, and vi) transmit, in accordance with the second precoding vector, second data to the second receiver.

    摘要翻译： 一种基站，包括体现在计算机可读存储介质上的多个码本。 基站还包括收发器，其被配置为：i）通知第一接收机用于在基站和第一接收机之间的传输的多个码本的第一码本，ii）通知第二码本的第二码本 用于基站和第二接收机之间的传输的多个码本，iii）从第一接收机接收第一码本中的预编码向量集合中的第一预编码向量，iv）从第二接收机接收第一预编码向量， 从第二码本中的预编码向量组中的第二预编码向量，v）根据第一预编码向量向第一接收机发送第一数据，以及vi）根据第二预编码向量将第二数据发送到 第二个接收器。