Rician衰落信道下空时分组码的性能分析  

Performance Analysis of Space-Time Block Codes for Rician Fading Channels

作　　者：张薇[1] 吕振肃[1] 

机构地区：[1]兰州大学信息科学与工程学院,甘肃兰州730000

出　　处：《现代电子技术》2006年第11期1-4,共4页Modern Electronics Technique

基　　金：甘肃省自然科学基金资助项目(ZS011A25016G)

摘　　要：基于Alamouti提出的BPSK调制下空时分组码在Rayleigh衰落信道中的码性能原理,推导出高阶(M ary)调制下Rician衰落信道中空时分组码的符号差错率的最小距离球界,并进行计算机仿真分析了两信道下引入空时分组码的多天线系统中发射和接收天线的分集增益,发射天线数量的“地板效应”以及Rician因子K对符号差错性能的影响。Based on studying the performance of Alamouti space- time block codes over Rayleigh fading channels, the paper analyzes the error probability of space - time block code and derives the minimum distance sphere bound of the symbol error rate for M - ary modulation over Rician fading environment. Simulations demonstrate that the good performance of space - time block code by using multiple transmit antennas and receive antennas, the ＂floor effect＂ of transmit - antenna number and the symbol error rate are influenced by Rician factor K over Rician fading channels.

关 键 词：无线通信 空时分组码 分集 莱斯衰落 瑞利衰落 

分 类 号：TN911.22[电子电信—通信与信息系统]