Telefonaktiebolaget LM Ericsson (publ)
Steering vector weighting

Abstract:

A method is provided. The method includes computing a beamforming weight matrix W; and using the beamforming weight matrix W to transmit and/or receive data. The beamforming matrix W is computed from a weighted channel estimate matrix Formulae (A): and a channel estimation error matrix Formulae (B): the weighted channel estimate matrix Formulae (C): satisfying a condition, and where H is a channel estimate matrix and .rho. is a weighting factor matrix and .smallcircle. denotes a matrix operation. The weighting factor matrix .rho. is such that zeroes of the rows or columns of the weighted channel estimate matrix Formulae (C): are moved as compared to zeroes of the rows or columns of the channel estimate matrix H.