TRANSMISSION INTERFERENCE CANCELATION METHOD FOR MU-MIMO

摘要

A transmission interference cancellation method for MU-MIMO(Multi User Multi Input Multi Output) is provided to determine a permutation matrix for minimizing transmission power, thereby supplying a superior transmission interference cancellation method with low complexity. A transmitter multiplies a channel matrix by a permutation matrix and performs QR decomposition(S210). The transmitter determines the permutation matrix(S220). The transmitter determines the second matrix by using the determined optimum permutation matrix and obtains a transmission free coding vector by using the determined second matrix and the transmission data vector.