Patent ID: 8744371

Claim:
A wireless communication apparatus which includes N antennas and performs data transmission using spatially multiplexed streams to a receiver terminal including M antennas, N being an integer of 2 or more and M being an integer of 1 or more, the apparatus comprising: a notification receiving unit for receiving notification of a channel estimation capability information including a maximum number of streams supported by the receiver terminal, the channel estimation capability information being included in beamforming capability information; a training unit for transmitting a packet including a training sequence for exciting a channel corresponding to the maximum number of streams to the receiver terminal; a feedback information receiving unit for receiving feedback information generated based on an estimated channel matrix, the estimated channel matrix being estimated by the training sequence received at the receiver; a transmission weight matrix setting unit for setting the transmission weight matrix for beamforming on the basis of the received feedback information; and a data transmitting unit for performing beamforming transmission to the receiver using the set transmission weight matrix.