Patent ID: 9172444
Filing Date: 2015-10-27
Classification: H04B,H04W

Abstract:
1. A method for designing beamforming vectors for a collaborative space division multiple access system, comprising: for each one of a plurality of subscriber stations, determining, by a processor, an array of channel conditions; wherein each one of the plurality of determined arrays comprises a representation of a plurality of channel gains corresponding to one or more transmit antennas and one or more receive antennas; ranking the plurality of determined arrays according to at least a first criterion; and designing a beamforming vector comprising a weighting vector and a combining vector for each subscriber station based at least in part on the ranking and on a nullspace of one or more previously designed weighting vectors and combining vectors of corresponding beamforming vectors; wherein, for each one of the plurality of determined arrays, the representation of the plurality of channel gains comprises a channel matrix H, wherein the first criterion is based at least in part on a maximal eigenvalue of the channel matrix H; wherein each beamforming vector for each subscriber station is determined sequentially according to rank.