Patent ID: 8693602

Claim:
A method for separating a plurality of user signals in a communication system including two transmitter antennas and N receiver antennas, the method comprising: receiving respective signals of the N receiver antennas, and transmitted by a plurality of users containing symbols; and applying a shaping filtering operation to a vector of the envelopes of the received signals for reducing intra-network or extra-network interferences, to output separated user signals respectively corresponding to two symbols that are Orthogonal Frequency Division Multiplexed, wherein the shaping filtering operation uses a linear mean square filter extended over an observation vector {tilde over (x)}=[x(2n−1) T x(2n) T x(2n−1) H x(2n) H ] T where x(2n−1) and x(2n) correspond to the (N×1) (N≧1) observations at the symbol times 2n−1 and 2n, said observation vector being associated with the two symbols.