关键词: 分布式多输入多输出, 端口选择, 天线选择, 低复杂度

Abstract:

The antenna number in distributed multiple input multiple output（MIMO）system is much larger than that in centralized MIMO system. Therefore adopting existent antenna selection algorithms with excellent performance will make the system hardly realized because of the increase of its complexity. To deal with the problem, an enhanced elimination antenna selection algorithm based on port selection is proposed according to characteristics of the distributed structure. The algorithm decreases the antenna search range via numberlimited dynamic port selection and uses iterative optimizingparameter computation instead of matrix inversion during the elimination process. Analysis and simulation show that the computation complexity of the proposed algorithm is largely decreased, while the capacity performance is still very close to that of the optimal algorithm.

Key words: distributed multiple input multiple output, port selection, antenna selection, low complexity