Patent ID: 8861629
Filing Date: 2014-10-14
Classification: H04B,H04L

Abstract:
1. A method comprising: generating a plurality of signal streams to be simultaneously transmitted from a plurality of antennas of a first wireless communication device to a second wireless communication device having a plurality of antennas; applying a transmit beamforming weight matrix to the plurality of signal streams to map each signal stream to a corresponding one of a plurality of modes of a wireless channel between the plurality of antennas of the first wireless communication device and the plurality of antennas of the second wireless communication device, wherein the beamforming matrix includes minimum and maximum thresholds for an eigenvalue or singular value for each of the corresponding modes so as to allocate power unequally to the plurality of modes and to limit an amount of power redistributed from stronger modes of the plurality of modes to weaker modes of the plurality of modes; and simultaneously transmitting a plurality of beamformed signals resulting from application of the transmit beamforming weight matrix to the plurality of signal streams.