Patent ID: 8009754

Claim:
A radio communication system comprising a radio transmitting apparatus that transmits a plurality of substreams using a plurality of transmission antennas and a radio receiving apparatus that receives the plurality of substreams using a plurality of reception antennas, wherein: the radio receiving apparatus comprises: a channel estimation section that performs channel estimation using the plurality of substreams and generates a channel estimation matrix; a system performance calculation section that calculates an overall performance of the radio communication system, the overall performance of the radio communication system being calculated in each combination of the plurality of transmission antennas using the channel estimation matrix; a specific combination determining section that determines a specific combination of the transmission antennas that optimizes the overall performance of the radio communication system; and a reporting section that reports information about the specific combination to the radio transmitting apparatus; and the radio transmitting apparatus comprises: an antenna selection section that selects the transmission antennas to use in transmission according to the specific combination reported from the radio receiving apparatus; and a transmitting section that transmits another plurality of substreams using the selected transmission antennas.