Patent ID: 7477695

Claim:
A wireless communication system, comprising: a transmitter and a receiver sharing a representation form of (amplitude, phase) for representing data to be transmitted; a data transmission side transmits data by allocating it to a signal point in a signal space corresponding to a data value; and a data reception side extracts an original data value according to a combination of amplitude and phase at a receive signal point, wherein said system adopt employs a space division multiplexing communication to multiplex signals for communication using a pair of transmitters and receivers each having a plurality of antennas; and including, singular value decomposition means for acquiring channel matrix H from a transmitter to a receiver in space division multiplexing, performing a singular value decomposition for said channel matrix into UDV H , and finding transmission antenna weight matrix V including, as element vectors, transmission weight vectors for each transmission antenna; transmission antenna weight matrix feedback means for allocating element vectors constituting transmission antenna weight matrix V to a signal point in a signal space for encoding and feeding an encoded signal from said receiver back to said transmitter; weight matrix reception means for allowing said transmitter to decode element vectors from a combination of amplitude and phase at a received signal point and restore transmission antenna weight matrix V, and for appending a reference signal to an encoded signal for transmission; and wherein said weight matrix reception means receives transmission antenna weight matrix V by removing fluctuations on a transmission path based on said reference signal.