Patent ID: 8260209

Claim:
A method for controller operations, the method comprising: receiving second order statistics from a plurality of communications devices; computing a beamforming vector for each communications device in the plurality of communications devices, wherein the beamforming vector for a communications device is based on the second order statistics provided by the communications device; selecting a subset of communications devices from the plurality of communications devices to receive transmissions; and transmitting transmissions to the selected subset of communications devices, wherein the transmitting uses the computed beamforming vector for each selected communications device to transmit the transmissions to the selected communications device, wherein the plurality of communications devices comprises two communications devices, wherein computing a beamforming vector comprises maximizing a sum-rate capacity for each of the two communications devices, and wherein the sum-rate capacity for the two communications devices is expressible as: C =log 2 (1 +SNR 1 )+log 2 (1 +SNR 2 ) where SNR i is a signal-to-noise ratio for an i-th communications device.