Patent ID: 8036295

Claim:
A MIMO receiver for receiving signals that have been transmitted from a plurality of transmission antennas by means of a plurality of reception antennas, comprising: a multipath linear combining unit for performing linear combining of multipaths in the received signals of said reception antennas by means of a transmission channel matrix between said plurality of transmission antennas and said plurality of reception antennas; and a maximum likelihood detector for comparing the signals in which said multipaths have been combined by said multipath linear combining unit with reception replicas that have been found using said transmission channel matrix to estimate the transmission signals of each of said transmission antennas, wherein the transmission channel matrix incorporates an influence of multipath noise interference power, wherein the MIMO receiver further comprises a whitening filter for whitening noise in signals in which said multipaths have been combined by said multipath linear combining unit and providing the result to said maximum likelihood detector, wherein the maximum likelihood detector comprises: a transmission symbol candidate generation unit which generates a transmission symbol vector; a replica generation unit which generates the replication replicas using said transmission symbol vector and said transmission channel matrix; an error calculation unit which calculates error signals corresponding to each of said transmission antennas by comparing the signals in which noise has been whitened and the replication replicas; and a bit likelihood calculation unit which receives the error signals corresponding to each of said transmission antennas and calculates a transmission likelihood for each bit transmitted from each of said transmission antennas.