Efficient filter weight computation for a MIMO system using the fast square root algorithm

摘要

A technique to efficiently derive a spatial filter matrix is described. Multiple rotations are performed to iteratively obtain first and second matrices for calculating a pseudo-inverse matrix of the channel response matrix (220,230). The first matrix, P1/2 is a square root matrix and the iterative algorithm involves the use of Givens rotation matrices (230).The spatial filter matrix is derived based on the first and the second matrices (246).