Patent ID: 6922445

Claim:
A method for selecting antennas for spatial multiplexed communication in a channel for transmitting data between a transmit unit having transmit antennas and a receive unit having receive antennas, said method comprising: a) determining a channel descriptor having sub-descriptors corresponding to said transmit antennas; b) choosing a quality parameter; c) assigning a threshold to said quality parameter; d) identifying among said sub-descriptors a sub-descriptor not meeting said threshold; and e) deactivating among said transmit antennas an antenna associated with said sub-descriptor, wherein said channel descriptor is a channel matrix H and said sub-descriptors are sub-matrices h i , and said sub-descriptor is a sub-matrix j of the channel matrix, and wherein said deactivating comprises removing at least one of the sub-matrix h j to obtain a subset channel matrix H′.