空时码在Rician衰落信道下性能分析  

Analysis of Space-Time Codes over Rician Fading Channels

作　　者：葛勇[1] 冯光焰[1] 

机构地区：[1]武警石家庄指挥学院,河北石家庄050061

出　　处：《计算机与网络》2009年第5期57-59,共3页Computer & Network

摘　　要：基于Alamouti提出的BPSK调制下空时分组码在Rayleigh衰落信道中的简单分集方案。推导出多发射和多接收天线系统中正交空时分组码在Rician衰落信道的BPSK调制下的比特差错率的最小距离球界,并推广到在高阶调制下衰落信道中系统符号差错率的性能。仿真分析和比较了空时分组码的多天线系统中发射和接收天线分集增益,以及信道相关参数的变化对系统误比特性能的影响。Based on study of the performance of Alamouti＇s two transmit diversity scheme for BPSK modulation over Rayleigh fading channels, this paper analyzes the error probability of space-time block code and derives the minimum distance sphere bound of the symbol error rate for MPSK modulation over Rician fading environment. Simulation demonstrates the good performance of the space-time block code by using multiple transmit antennas and receive antennas over the Rician channels.

关 键 词：正交空时分组码 分集 Rician衰落 

分 类 号：TN911.2[电子电信—通信与信息系统]