| 分布式MIMO系统中的一种可控式天线选择 |
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| 引用本文： | 弓宇宏,王霞,云婵. 分布式MIMO系统中的一种可控式天线选择[J]. 通信技术, 2010, 43(7): 54-57 |
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| 作者姓名： | 弓宇宏 王霞 云婵 |
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| 作者单位： | 1. 西安交通大学电子与信息工程学院,陕西,西安,710049;综合业务网理论及关键技术国家重点实验室,陕西,西安,710071
2. 西安交通大学电子与信息工程学院,陕西,西安,710049 |
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| 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。
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| 关 键 词： | 分布式MIMO系统 端口选择 天线选择 门限 |
A Controllable Antenna Selection for Distributed MIMO Systems |
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| GONG Yu-hong,WANG Xia,YUN Chan. A Controllable Antenna Selection for Distributed MIMO Systems[J]. Communications Technology, 2010, 43(7): 54-57 |
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| Authors: | GONG Yu-hong WANG Xia YUN Chan |
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| Affiliation: | 1School of Electronic and Information Engineering,Xi＇an Jiaotong University,Xi＇an Shaanxi 710049,China;2State Key Laboratory of Integrated Services Networks,Xi＇an Shaanxi 710071,China) |
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| Abstract: | 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. |
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| Keywords: | distributed MIMO system port selection antenna selection threshold |
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