Patent ID: 8477881
Filing Date: 2013-07-02
Classification: H04B

Abstract:
1. A method of determining receiver beam forming vectors for a plurality of receivers in a MIMO system, wherein each receiver comprises a plurality of receiver antennae and wherein the MIMO system comprises a plurality of transmitter antennae, the method comprising: quantifying the characteristics of the channels of the MIMO system in a channel property matrix Ψ including interference between individual channels, performing Cholesky decomposition of the channel property matrix row-by-row into a lower triangular matrix with unit elements along its diagonal, a diagonal matrix and the Hermitian transpose of the lower triangular matrix, comprising determining, when performing a step of the Cholesky decomposition for a row, a receiver beam forming vector associated with the row that maximises the component of the diagonal matrix in the row; wherein the matrix quantifying the characteristics of said channel is: for i rows/steps of the Cholesky decomposition for i>0, wherein H ĥ wherein: s