| 摘要 |
There are provided: a channel estimation means which obtains channel estimation values between the transmitter antennas and the receiver antennas from received signals received by the receiver antennas; a memory for storing therein the reception signals and the channel estimation values obtained by said channel estimation means; and a signal reproducing and separating means which reproduces and separates the signals transmitted from the transmitter antennas of the transmitter apparatus based on (i) a retransmission signal for a reception signal from the transmitter apparatus, (ii) channel estimation values obtained with respect to the retransmission signal by the channel estimation means, and (iii) the reception signals and the channel estimation values held in the memory. In consequence, in MIMO transmission, MIMO signal separation processing is effectively performed even when correlation between the transmitter antenna and the receiver antenna is high. It is also possible to realize sufficient characteristics improvement in retransmission combination.
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