基于较为精确的分布式MIMO系统信道模型,对下行发射天线选择算法进行研究,提出了一种充分利用了分布式MIMO系统特点的基于范数和相关性的分层天线选择算法,并分别与基于相关性的增量天线选择算法以及基于范数和相关性的增量天线选择算法进行性能比较.仿真结果表明,文中提出的算法在大大降低运算复杂度的前提下,还获得了一定的容量性能提升.
Based on accurate distributed multiple input multiple output (MIMO) channel model. A layered antenna selection algorithm are proposed for downlink transmit antenna selection in distributed MIMO systems. The performance of the proposed algorithms is compared with that of norm based antenna selection algorithm and correlation based antenna selection algorithm respectively. The simulation result shows that our proposed algorithm obtains an approximate optimal performance with significant computational complexity reduction.