一种改进的MIMO检测算法

An Improving Algorithm for MIMO Detection

摘要: 本文针对现有的ML(Maximum Likelihood)检测算法复杂度高，而传统检测算法性能不是很优的问题，提出了一种新的检测算法。新的检测算法结合ZF-OSIC和ML检测算法，根据ZF-OSIC(Force Zero- Ordered Successive Interference Cancellation)把发射信号的可能值限制在一定的范围内进行搜索，而不是对所有可能值的遍历。仿真结果表明，选择合适的搜索范围可以使BER性能在最接近ML性能的同时复杂度也得到了降低。

Abstract: The existing ML (Maximum Likelihood) detection algorithm is of high complexity, and the tradi-tional detection algorithm doesn’t have very excellent performance. According to this problem, we propose a new detection algorithm in this paper. The new detection algorithm combined with ZF-OSIC and ML detec-tion algorithms, and to search by limiting the possible values for the transmitted signal within a certain range with ZF-OSIC (Force Zero-Ordered Successive Interference Cancellation), rather than traverse all possible values. The simulation results show that selecting the appropriate search range can make BER performance be most close to the ML performance while its complexity being reduced.