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    MIMO beamforming method and method of constructing a differential codebook for a wireless network
    3.
    发明申请
    MIMO beamforming method and method of constructing a differential codebook for a wireless network 有权
    MIMO波束成形方法和无线网络构成差分码本的方法

    公开(公告)号：US20100054114A1

    公开(公告)日：2010-03-04

    申请号：US12584142

    申请日：2009-09-01

    申请人： Qinghua Li ,  Senjie Zhang ,  Hongming Zheng ,  Shanshan Zheng

    发明人： Qinghua Li ,  Senjie Zhang ,  Hongming Zheng ,  Shanshan Zheng

    IPC分类号： H04J11/00 ,  H04B7/00 ,  H04K1/10

    CPC分类号： H04B7/0617 ,  H04B7/0434 ,  H04B7/0456 ,  H04B7/0465 ,  H04B7/0478 ,  H04B7/0641 ,  H04W16/28

    摘要： A MIMO beamforming method comprises receiving at a base station information regarding a difference between an ideal beamforming matrix and an averaged beamforming direction, using the information to construct a beamforming matrix at the base station, and performing a beamforming operation using the reconstructed beamforming matrix. Alternatively, the method comprises computing at a subscriber station an averaged beamforming direction, computing at the subscriber station a quantization index corresponding to a differential matrix in a differential codebook, and transmitting the quantization index across a wireless channel of the wireless network. The differential codebook may be constructed by identifying a codebook center and transforming a predefined codebook that is stored in a memory of a component of the wireless network.

    摘要翻译： MIMO波束成形方法包括在基站处接收关于理想波束成形矩阵和平均波束成形方向之间的差异的信息，使用该信息在基站处构造波束成形矩阵，以及使用重构波束形成矩阵执行波束成形操作。 或者，该方法包括在用户台处计算平均波束成形方向，在用户台处计算与差分码本中的差分矩阵相对应的量化索引，以及在无线网络的无线信道上发送量化索引。 可以通过识别码本中心和变换存储在无线网络的组件的存储器中的预定码本来构建差分码本。

    CHANNEL AWARE MULTIPLE USER MIMO SCHEME UNIFIED WITH SINGLE USER CLOSED LOOP MIMO
    4.
    发明申请
    CHANNEL AWARE MULTIPLE USER MIMO SCHEME UNIFIED WITH SINGLE USER CLOSED LOOP MIMO 有权
    信道识别多用户MIMO方案与单用户闭合环路MIMO统一

    公开(公告)号：US20090074099A1

    公开(公告)日：2009-03-19

    申请号：US12183317

    申请日：2008-07-31

    申请人： Hongming Zheng ,  Shanshan Zheng ,  May Wu

    发明人： Hongming Zheng ,  Shanshan Zheng ,  May Wu

    IPC分类号： H04L1/02

    CPC分类号： H04W72/1257 ,  H04L1/0017 ,  H04L1/0026 ,  H04L1/0035 ,  H04W72/1226

    摘要： A base station is capable of unifying a single-user MIMO scheme with a multi-user MIMO scheme by receiving a Rank-1 CQI values from one or more subscriber stations. The base station also receives preceding vectors from the subscriber stations, and then determines which of the subscriber stations has a best Rank-1 CQI value. The base station then determines a beam forming matrix to use based at least in part on the vectors received from the subscriber station having the best Rank-1 CQI value. The base station then broadcasts data to the subscriber station using the beam forming matrix corresponding to the subscriber station having the best Rank-1 channel quality indicator to implement single-user MIMO in one or multiple streams to that subscriber station, or to the subscriber stations having the best Rank-2 channel quality indicators to implement multi-user MIMO in multiple streams.

    摘要翻译： 基站能够通过从一个或多个用户站接收Rank-1 CQI值来统一单用户MIMO方案与多用户MIMO方案。 基站还从用户站接收预编码向量，然后确定哪个用户站具有最佳Rank-1 CQI值。 然后，基站至少部分地基于从具有最佳Rank-1 CQI值的用户站接收的向量来确定要使用的波束形成矩阵。 然后，基站使用与具有最佳Rank-1信道质量指示符的用户站相对应的波束形成矩阵向订户台广播数据，以在一个或多个流中实现单用户MIMO到该用户台，或者向订户站 具有最佳的2级信道质量指标，可在多个流中实现多用户MIMO。

    NON-UNITARY PRECODING SCHEME FOR WIRELESS COMMUNICATIONS
    6.
    发明申请
    NON-UNITARY PRECODING SCHEME FOR WIRELESS COMMUNICATIONS 审中-公开
    无线通信非核心预案方案

    公开(公告)号：US20110075752A1

    公开(公告)日：2011-03-31

    申请号：US12567220

    申请日：2009-09-25

    申请人： Hongming Zheng ,  Shanshan Zheng ,  Guangjie Li ,  Feng Z. Zhou

    发明人： Hongming Zheng ,  Shanshan Zheng ,  Guangjie Li ,  Feng Z. Zhou

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0626 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0854

    摘要： Techniques for a non-unitary precoding scheme for wireless communications are described. An apparatus may comprise a mobile device for a mobile broadband communications system utilizing an orthogonal frequency-division multiple access technique. The mobile device may have a channel state information module operative to generate channel state information for a fixed device using a non-unitary precoding scheme for a closed loop multi-user multiple-input and multiple-output scheme. The channel state information may comprise channel quality information and a codeword index. Other embodiments are described and claimed.

    摘要翻译： 描述了用于无线通信的非整体预编码方案的技术。 一种装置可以包括利用正交频分多址技术的移动宽带通信系统的移动装置。 移动设备可以具有信道状态信息模块，其可操作用于使用用于闭环多用户多输入和多输出方案的非单一预编码方案为固定设备生成信道状态信息。 信道状态信息可以包括信道质量信息和码字索引。 描述和要求保护其他实施例。

    Adaptive multiple FIFO scheme
    10.
    发明授权
    Adaptive multiple FIFO scheme 有权
    自适应多FIFO方案

    公开(公告)号：US08447900B1

    公开(公告)日：2013-05-21

    申请号：US10459798

    申请日：2003-06-12

    申请人： Hongming Zheng ,  Gangadhar Gadepalli

    发明人： Hongming Zheng ,  Gangadhar Gadepalli

    IPC分类号： G06F3/00

    CPC分类号： G06F5/12 ,  G06F3/0656 ,  G06F5/10

    摘要： A first in, first out (FIFO) buffer system includes memory with a plurality of memory blocks. A first FIFO control module generates and assigns a first random sequence to the memory blocks and stores first data in the memory blocks according to the first random sequence. A second FIFO control module generates and assigns a second random sequence to the memory blocks that is different than the first random sequence and stores second data in the memory blocks according to the second random sequence.

    摘要翻译： 先进先出（FIFO）缓冲系统包括具有多个存储块的存储器。 第一FIFO控制模块生成并将第一随机序列分配给存储器块，并根据第一随机序列将第一数据存储在存储器块中。 第二FIFO控制模块生成并将第二随机序列分配给与第一随机序列不同的存储块，并且根据第二随机序列将第二数据存储在存储器块中。