Patent ID: 8982973
Filing Date: 2015-03-17
Classification: H04B

Abstract:
1. A correlation-matrix feedback method for an antenna array, comprising: selecting, at a receiving end, a codeword from a predetermined correlation-matrix codebook comprising a plurality of codewords according to a predetermined criterion, to represent a correlation matrix to be fed back; and feeding back an index of the selected codeword in the predetermined correlation-matrix codebook to a transmitting end; wherein each codeword is a codeword matrix for approximating a correlation matrix of an antenna array at the transmitting end; wherein the predetermined criterion comprises a matrix colinear criterion; wherein the selecting comprises calculating colinearity between each codeword matrix in the predetermined correlation-matrix codebook and the correlation matrix to be fed back and selecting a codeword matrix with maximum colinearity to represent the correlation matrix to be fed back.