MULTIPLE BEAMFORMING METHOD AND APPARATUS
    4.
    发明申请
    MULTIPLE BEAMFORMING METHOD AND APPARATUS 审中-公开
    多波束形成方法和设备

    公开(公告)号:WO2009035284A3

    公开(公告)日:2009-05-22

    申请号:PCT/KR2008005397

    申请日:2008-09-11

    CPC classification number: H04B7/0617

    Abstract: The present invention relates to a beamforming method and apparatus. A beamforming method for use in a base station for transmitting a plurality of streams through a plurality of antennas includes: receiving feedback information including information on a first codeword selected from a codebook including a plurality of codewords from each of a plurality of user terminals; grouping the plurality of user terminals by use of the feedback information from each user terminal; determining a user terminal to which a plurality of streams will be assigned of the plurality of user terminals, and determining a second codeword to be used for beamforming from the codebook by use of the feedback information of each user terminal and grouping information; and multiplying data to be transmitted through the plurality of steams by the second codeword and a unitary matrix.

    Abstract translation: 波束形成方法和装置技术领域本发明涉及波束形成方法和装置 一种用于在基站中用于通过多个天线发送多个流的波束成形方法,包括:接收包括关于从包括来自多个用户终端中的每一个的多个码字的码本中选择的第一码字的信息的反馈信息; 通过使用来自每个用户终端的反馈信息来分组多个用户终端; 确定多个用户终端将被分配多个流的用户终端,并且通过使用每个用户终端的反馈信息和分组信息来确定要从码本中用于波束成形的第二码字; 以及将要通过所述多个流传送的数据乘以所述第二码字和酉矩阵。

    A MIMO-OFDM SYSTEM USING EIGENBEAMFORMING METHOD
    8.
    发明申请
    A MIMO-OFDM SYSTEM USING EIGENBEAMFORMING METHOD 审中-公开
    使用EIGENBEAMFORMING方法的MIMO-OFDM系统

    公开(公告)号:WO2005062729A2

    公开(公告)日:2005-07-14

    申请号:PCT/KR2004003065

    申请日:2004-11-25

    Abstract: Disclosed is a MIMO-OFDM system, wherein the transmitter comprises a serial/parallel converter for converting continuouslyinputted symbols of the number of subcarriers to K parallel signals; a signal reproducer for reproducing K parallel signals by the number of transmit antennas L an eigenmode generator for generating eigenbeam of the reproduced signals outputted from the signal reproducer at each subcarrier, on the basis of Nf eigenbeam forming vectors which are fed backlong-term and information of a best eigenbeam forming vector at each subcarrier which is fed back short-term, through the feedback device; and aplurality of inverse Fourier converters for receiving the signals outputted from the eigenmode generator and generating an OFDM symbol.

    Abstract translation: 公开了一种MIMO-OFDM系统,其中发射机包括串行/并行转换器,用于将子载波数量的连续输入符号转换为K个并行信号; 信号再现器,用于根据发送天线L的数量再现K个并行信号,本发明天线L是一个本征模式发生器,用于根据在每个子载波上从信号再现器输出的再生信号产生本征光束, 通过反馈装置在短时间反馈的每个子载波处的最佳特征波束形成矢量; 以及多个逆傅里叶变换器,用于接收从本征模式发生器输出的信号并产生OFDM符号。

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