Patent ID: 8238471

Claim:
A method for canceling interference in a transmitting apparatus of a multi-antenna system, the method comprising the steps of: generating a precode which maximizes a diversity gain of one or more receive antennas using channel information of the one or more receive antennas to be serviced; updating transmit powers of the one or more receive antennas in accordance with a power loss and a shaping loss according to a nonlinear precoding scheme; updating the precode using the updated transmit power; precoding transmit signals using the updated precode; and performing the nonlinear precoding scheme on the precoded transmit signals to be transmitted to the one or more receive antennas, wherein the generating the precode comprises: calculating at least one of a Signal to Interference and Noise Ratio (SINR) and a sum capacity of the one or more receive antennas; calculating the transmit powers of the one or more receive antennas using at least one of the SINR and the sum capacity; generating the precode which maximizes the diversity gain of the one or more receive antennas using the transmit powers; and arranging rows of the generated precode according to at least one of the SINR and the sum capacity of the one or more receive antennas, wherein the arranged precode is updated according to the updated transmit powers.