关键词: 多输入多输出系统, 干扰信道, 预编码, 迭代算法, 信号与干扰加噪声比

Abstract: The technology of multiple input multiple output can make great improvements in terms of the overall throughput of the network. But it also brings an inevitable co-channel interference problem. Precoder design will play a pivotal role in future communication as its abilities of suppressing co-channel interference and simplifying receivers. In this paper, the precoder matrix design of multiple streams is transformed to the precoder vector design of single stream and two precoder design algorithms for MIMO interference channel based on the virtual SINR and the MMSE criterion are proposed. Simulation results are provided to demonstrate that the proposed designs are capable of significantly improving the system sum capacity.

Key words: Multiple Input Multiple Output（MIMO）, interference channel, precoder, iterative algorithms, Signal to Interference plus Noise Ratio（SINR）