Patent ID: 8779978
Filing Date: 2014-07-15
Classification: H01Q

Abstract:
1. A method, in a transmitter, for selecting steering vectors for transmitting one or more streams between the transmitter and a receiver, wherein the transmitter has a plurality of transmit antennas, the receiver has a plurality of receive antennas, the number of receive antennas in the plurality of receive antennas is N R , and the number of streams in the one or more steams is N S , the method comprising: constructing a partial channel matrix corresponding to an estimate of a multiple input, multiple output (MIMO) channel between (i) the plurality of transmit antennas and (ii) a set of one or more of the receive antennas, wherein the number of receive antennas in the set of one or more of the receive antennas is M, and M is less than N generating one or more independent vectors using the partial channel matrix, wherein the number of independent vectors in the one or more independent vectors is L, and L is a rank of the partial channel matrix; and when N