摘要
基于信道容量最大化准则,提出了一种专门针对分布式多入多出(MIMO)系统的可控式天线选择算法。该算法在射频链路数(Lt)固定的前提下分两步执行,第一步进行动态的端口选择,第二步利用穷举搜索法在已选定的端口间选出Lt个最优天线,通过门限值的设定控制天线选择的复杂度和性能的平衡。仿真结果表明,在合适的门限值范围内,该算法具有很好的跟踪特性,具有接近于最优的容量性能,同时大大降低了天线选择复杂度。
Based on the criteria of maximal capacity,a controllable antenna selection algorithm for distributed MIMO system is proposed in this paper.With fixed number of radio links（Lt）,the algorithm is implemented in two steps.The first step is to select ports dynamically,and the second is to select Lt optimal antennas from the selected ports through exhaustive search.Simulation results show that,in a proper range of threshold value,the proposed algorithm could present an excellent tracking capability and near-optimal capacity performance,while greatly reduce the computational complexity of antenna selection.
出处
《通信技术》
2010年第7期54-57,共4页
Communications Technology
