MIMO系统中最大化信道容量的联合发射与接收天线选择算法.doc

MIMO系统中最大化信道容量的联合发射与接收天线选择算法
兰鹏1,2,刘琚1, 2,许宏吉1,孙丰刚1
(,山东济南 250100;,江苏南京 210096)
摘要:基于对信道容量公式的分析,得到了增加一对发射与接收天线时信道容量增量的表达式,通过对该表达式的分析简化提出了当发射端与接收端射频链路数相同时的低复杂度联合发射与接收天线选择(JTRAS)算法。仿真结果表明新算法在计算复杂度较低的条件下性能优于目前存在的其他算法,与最优算法接近。
关键词:多输入多输出系统;天线选择;信道容量;中断容量
中图分类号: 文献标识码:A 文章编号:1000-436X(2009)07-0007-06
Joint transmit and receive antenna selection in mimo
systems for maximize channel capacity
LAN Peng1,2, LIU Ju1,2, XU Hong-ji1, SUN Feng-gang1
(1. School of Information Science and Engineering, Shandong University, Jinan 250100, China;
2. National munications Research Laboratory, Southeast University, Nanjing 210096, China)
Abstract: Based on the analysis of the channel capacity, the equation about the increase of the channel capacity was derived when one more pair of transmit and receive antennas were added. By analyzing this equation, a joint transmit and receive antennas selection algorithm with plexity were proposed when there were the same number of RF chains at both of the transmitter and receiver side. The simulation results illustrate that the new algorithm outperforms the other existing algorithms with plexity and it approaches the optimal algorithm most.
Key words: MIMO; antenna selection; channel capacity; outage capacity
1 引言
收稿日期:2008-06-21;修回日期:2009-04-23
基金项目:国家自然科学基金资助项目(60572105);山东省自然科学基金资助项目(Y2007G04 );移动通信国家重点实验室