Codebook design method for multiple-input multiple-output (MIMO) communication system and method for using the codebook

摘要

A multiple-input multiple-output (MIMO) communication system and method using a codebook, are provided. A transmitter and at least one receiver included in the MIMO communication system may use at least one codebook from among a plurality of codebooks. Codeword matrices included in one of the codebooks may correspond to vectors included in a block diagonal matrix, and another codebook may be configured by rotating the vectors. The codeword matrices of the remaining codebooks may include the rotated vectors and random vectors.

主权项

1. A transmitter for a multiple-input multiple-output (MIMO) communication system, the transmitter comprising:
a memory configured to store a codebook comprising at least one of 8×1 codeword matrices c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12, c13, c14, c15, and c16; wherein the codeword matrices c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12, c13, c14, c15, and c16 are generated based on a matrix[F(0)04×4F(1)04×404×4F(0)04×4F(1)]⁢(F(0)=14⁡[11111j-1-j1-11-11-j-1j],F(1)=14⁡[1111(1+j)2(-1+j)2(-1-j)2(1-j)2j-jj-j(-1+j)2(1+j)2(1-j)2(-1-j)2]);  and a precoder configured to precode a data stream to be transmitted based on one of the generated codeword matrices.