基于导频符号辅助的天线选择分集方案  

Transmit Antenna Selection Scheme Based on Pilot Symbol Assisted Modulation

作　　者：王扬 孙海涛 王永刚[3] 

机构地区：[1]河南省移动通信公司,郑州450000 [2]河南移动通信开封分公司,开封475000 [3]郑州大学信息工程学院,郑州450052

出　　处：《信息通信》2007年第4期31-33,共3页Information & Communications

摘　　要：在大多数散射环境下,天线分集是减小多径效应的一种实际、有效的技术,在分析Alamouti两发一收发射分集方案的基础上,介绍了一种基于导频符号辅助的发射天线选择分集方案。该方案通过引入反馈和导频符号辅助技术,在发射端对两个发射天线进行天线选择,给出的仿真结果表明,运用分集技术可大大改善无线通信系统的性能,该方案性能优于Alamouti两发一收发射分集方案,并且发送功率要低于Alamouti两发一收方案。In most scattering environments antenna diversity is a practical, effective and a widely applied technique for reducing the effect of multipath fading. After analyzing a simple transmit diversity scheme proposed by Alamouti a transmit antenna selection scheme based on pilot symbol assisted modulation is presented. The simulation has shown that the new scheme can improve the error performance and the radiated power is smaller than Alamouti scheme using two transmit antennas and one receive antenna.

关 键 词：无线通信 多径衰落 发射分集 天线选择 导频符号辅助 

分 类 号：TN911.72[电子电信—通信与信息系统]