基于反馈的低复杂度分集复用MIMO系统判决算法

raditional multi-antenna systems use diversity combining techniques and spatial multiplexing. These multiple-input multiple-output (MIMO) communication systems can obtain high reliability or transmission rate. Most works, however, focus exclusively on one of the diversity gain and multiplexing gain. This paper proposes a switched decision criterion to get optimal tradeoff performance of the two gains, and give out a low complexity near optimization algorithm. The approximate upper-bounded of error rate of the MIMO system is proposed in this paper, and derived the tradeoff decision criterion based on minimum bits error rate. The proposed algorithm has much lower complexity, the performance is close to optimization algorithm, and meets the real-time requirements of communication system by selecting different mode. Simulation results are presented to demonstrate the effectiveness and feasibility of the proposed algorithm in practical applications.