Invention Application
US20100215112A1 Method and apparatus for multiple input multiple output (MIMO) transmit beamforming 有权
多输入多输出(MIMO)发射波束成形的方法和装置

Method and apparatus for multiple input multiple output (MIMO) transmit beamforming
Abstract:
A wireless communications network is provided. The wireless communications network comprises a plurality of base stations. Each one of said base stations is capable of wireless communications with a plurality of subscriber stations. At least one of said plurality of base stations comprises a processor configured to select a codeword from a codebook and precode data with the selected codeword, and a transmitter configured to transmit the precoded data. Rank 1 of the codebook is selected from the following algorithm: Codebook Matrix Index (CMI)Base MatrixRank 1 1V8(:,:,3)V8(:,1,3) 2 V8(:,2,3) 3 V8(:,3,3) 4 V8(:,4,3) 5 V8(:,5,3) 6 V8(:,6,3) 7 V8(:,7,3) 8 V8(:,8,3) 9 V8(:,9,3) 10 V8(:,10,3) 11 V8(:,11,3) 12 V8(:,12,3) 13 V8(:,13,3) 14 V8(:,14,3) 15 V8(:,15,3) 16 V8(:,16,3)
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