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    • 1. 发明申请
    • METHOD AND APPARATUS FOR DETERMINING A PRECODING MATRIX
    • 用于确定预编码矩阵的方法和装置
    • WO2010126328A3
    • 2011-02-17
    • PCT/KR2010002744
    • 2010-04-30
    • SEAH NETWORKS CO LTDLI JIANJUNAHN JAE HYEONLI ZHENGZIJEON HYUNG JOON
    • LI JIANJUNAHN JAE HYEONLI ZHENGZIJEON HYUNG JOON
    • H04B7/04H04B7/005
    • H04B7/0413H04B7/0639H04L25/03942H04L2025/03764
    • According to one embodiment of the present invention, a method for determining a precoding matrix, which can improve a diversity gain in a static communication environment or a low-speed mobile communication environment, determines a precoding matrix in an open-loop MIMO scheme, and includes: applying a first precoding matrix, which is selected from a codebook including a plurality of precoding matrices, to downstream data and transmitted through a plurality of antennas; and changing the first precoding matrix to a second precoding matrix at every predetermined interval and applying the second precoding matrix to the downstream data and transmitted through the plurality of antennas, wherein the second precoding matrix is a precoding matrix corresponding to an index which is shifted by a certain value in the direction in which an index of a precoding matrix increases from an index of the first precoding matrix in the codebook.
    • 根据本发明的一个实施例,一种用于确定可以改善静态通信环境或低速移动通信环境中的分集增益的预编码矩阵的方法确定开环MIMO方案中的预编码矩阵,以及 包括:将从包括多个预编码矩阵的码本中选择的第一预编码矩阵应用于下行数据并通过多个天线发送; 以及以每个预定间隔将所述第一预编码矩阵改变为第二预编码矩阵,并且将所述第二预编码矩阵应用于所述下游数据并通过所述多个天线发送,其中所述第二预编码矩阵是对应于被所述多个天线偏移的索引的预编码矩阵 在预编码矩阵的索引从码本中的第一预编码矩阵的索引增加的方向上的一定值。