Patent ID: 8045644

Claim:
A mobile terminal in a radio communication system in which a transmitting side uses multiple antennas to transmit signals to the mobile terminal, comprising: a reception quality measurement unit that measures the reception quality of each signal that is transmitted from each antenna and received by the mobile terminal; an antenna determination unit that determines a first antenna based on the reception qualities in real-time communication; a multi-dimension correlation calculation unit that calculates multi-dimension correlation between the first antenna and other antennas; a low correlation resource selection unit that selects all resources where the multi-dimension correlation is lower than a set value; and a feedback unit that feeds back data indicating the first antenna, all of the low correlation resources and reception qualities to the transmitting side so that it is possible to designate antennas corresponding to the resources of low correlation as second antennas that are candidates for diversity antennas, and to perform diversity transmission of signals to the mobile terminal using the first and second antennas.