Patent ID: 8195089

Claim:
A receiving end apparatus in a multi-antenna relay wireless communication system using cooperative transmission, the receiving end apparatus comprising: an estimator configured to estimate a channel between a transmitting end and a relay station; a reader configured to read channel gain information, which is feed-forwarded from the relay station, between the transmitting end and the relay station with respect to all antennas; a feedback unit configured to determine a covariance matrix used to regulate power of a Transmit (Tx) signal with respect to all antennas of the transmitting end and a relay matrix used to process relay station signals from the relay station by using channel information received from the estimator and the reader, and to feed back information on the determined covariance and relay matrices; and a detector configured to detect the Tx signal by combining a first signal received from the transmitting end at a first Tx time, a second signal received from the transmitting end at a second Tx time, and a relay station signal received from the relay station at the second Tx time.