多天线系统分集复用模式快速选择算法

A Fast Diversity and Multiplexing Selection Algorithm for Multi-antenna Systems

对空间复用多天线系统线性接收机进行了深入分析,针对其虽应用简便却未能很好地利用分集增益的问题,提出了一种基于误码率准则的分集复用模式快速选择算法.所提算法通过低复杂度的判决准则对多天线系统分集复用模式进行选择,并将少量的信息反馈回发送端,达到充分利用多天线系统分集与复用增益的目的.与以往算法相比,所提算法可以更好地利用系统的瞬时分集增益,而且具有较低的计算复杂度,很好地满足了多天线通信系统对实时性和快速性的要求.仿真结果验证了算法的有效性和可行性.

This paper makes a deep analysis on the linear receiver of spatial multiplexing multi-antenna system. The linear receiver is easy to use, but fails to take advantage of the diversity gain. Aiming at this problem, a fast diversitymultiplexing selection algorithm based on bit error rate （BER） criterion is proposed. The proposed algorithm selects the diversity and multiplexing mode of multi-antenna system based on a low complexity decision criterion, sends a few feedback bits to receiver, and achieves the objective of making full use of the diversity and multiplexing gain of multi-antenna system. Compared with the traditional algorithm, the proposed algorithm gets a better instantaneous diversity gain, has a much lower computational cost and meets real-time and rapidity requirements from multi-antenna communication systems. Simulation results are presented to demonstrate the effectiveness and feasibility of the proposed algorithm.