Patent ID: 8374650

Claim:
A method for designing beamforming vectors for a collaborative space division multiple access system, comprising: assembling at a base station m channel matrices for m subscriber stations; defining a beamformer vector space corresponding to the m channel matrices, wherein the beamformer vector space comprises a discrete set of beamforming vectors; searching the beamformer vector space to select a weighting beamforming vector w and a combining beamforming vector v for each subscriber station by maximizing a predetermined performance metric; and for each of the subscriber stations, conveying the weighting beamforming vector w and the combining beamforming vector v to the subscriber station, the conveyed weighting beamforming vector w and the conveyed combining beamforming vector v being useful for the subscriber station to adjust one or more parameters for a multiple input multiple output operation (MIMO) antenna array.