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    • 5. 发明申请
    • SYSTEM FOR FEEDING BACK INDEX OF CODEWORD MATRIX
    • 用于提交编码基数的返回索引的系统
    • US20090268827A1
    • 2009-10-29
    • US12109440
    • 2008-04-25
    • Bruno CLERCKXSung Jin KimKi Il KimDavid J. LoveTaejoon Kim
    • Bruno CLERCKXSung Jin KimKi Il KimDavid J. LoveTaejoon Kim
    • H04L27/28
    • H04B7/0639
    • A system is provided for performing downlink beamforming based on information fed back by a mobile station. The mobile station includes a channel matrix generation unit to generate a channel matrix with respect to channels ranging from a base station to a mobile station, the base station including multiple transmission antennas, a codebook updating unit to generate a second codebook including a plurality of second codeword matrixes based on the generated channel matrix and a first codebook including a plurality of first codeword matrixes, a codeword selection unit to select at least one transmission codeword matrix from among the plurality of second codeword matrixes, a transmission unit to transmit an index of the selected transmission codeword matrix to the base station, and a receiving unit to receive data transmitted from the base station via the multiple transmission antennas.
    • 提供一种用于基于由移动台反馈的信息来执行下行链路波束成形的系统。 移动站包括:信道矩阵生成单元,生成相对于从基站到移动站的信道的信道矩阵,所述基站包括多个发送天线,码本更新单元,生成包含多个秒的第二码本 基于生成的信道矩阵的码字矩阵和包括多个第一码字矩阵的第一码本,从所述多个第二码字矩阵中选择至少一个发送码字矩阵的码字选择单元,发送所述多个第一码字矩阵的索引的发送单元, 所选择的发送码字矩阵到基站,接收单元经由多个发送天线接收从基站发送的数据。
    • 8. 发明申请
    • MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM USING CODEBOOK CORRESPONDING TO EACH REPORTING MODE
    • 使用与每个报告模式对应的代码的多路输入多路输出通信系统
    • US20110268207A1
    • 2011-11-03
    • US13097719
    • 2011-04-29
    • Joon-Il CHOIBruno CLERCKXKi Il KIM
    • Joon-Il CHOIBruno CLERCKXKi Il KIM
    • H04B7/02
    • H04B7/0639H04B7/0456H04B7/0478H04B7/0482
    • A multiple input multiple output (MIMO) communication system using a first codebook and a second codebook is provided. The first codebook and the second codebook may independently exist, or may exist in a form of an overall codebook in which the first codebook and the second codebook are integrated with each other. A receiver may extract a first precoding matrix indicator from the first codebook, and may extract a second precoding matrix indicator from the second codebook. The receiver may also extract the first precoding matrix indicator and the second precoding matrix indicator from the overall codebook. The first precoding matrix indicator and the second precoding matrix indicator may be fed back to a transmitter. The transmitter may determine a precoding matrix based on the first precoding matrix indicator and the second precoding matrix indicator.
    • 提供了使用第一码本和第二码本的多输入多输出(MIMO)通信系统。 第一码本和第二码本可以独立地存在,或者可以以第一码本和第二码本彼此集成的整体码本的形式存在。 接收机可以从第一码本提取第一预编码矩阵指示符,并且可以从第二码本中提取第二预编码矩阵指示符。 接收机还可以从总码本中提取第一预编码矩阵指示符和第二预编码矩阵指示符。 第一预编码矩阵指示符和第二预编码矩阵指示符可以被反馈到发射机。 发射机可以基于第一预编码矩阵指示符和第二预编码矩阵指示符来确定预编码矩阵。