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WCDMA中天线开环发分集模式STTD的性能分析
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WCDMA中天线开环发分集模式STTD的性能分析
内容简介：推导了两种空时块编码发分集(STTD)检测方法在平坦Rayleigh信道中的理论性能.仿真结果表明，当信道时变速率较小时，闭环发分集方案优于STTD，但随着Doppler频率的增加，闭环模式的性能迅速恶化，而STTD受影响较小，故在高时变信道中更适宜采用STTD方案.
Abstract：Simple close form expressions for STTD's theoretical performancewith or without channel estimation error in flat Rayleigh channel are derived. Simulation comparison between STTD and the two closed loop transmit diversity modes shows that when the maximal Doppler frequency is small the closed loop modes have better performance, but when the Doppler frequency increases this doesn't hold. STTD tends to have a better performance in that case.
作者：杜志敏, 薛强, 吴伟陵,
关键词：宽带CDMA, STTD天线开环发分集模式, 二元误判概率, 平坦瑞利信道,
内容简介：推导了两种空时块编码发分集(STTD)检测方法在平坦Rayleigh信道中的理论性能.仿真结果表明，当信道时变速率较小时，闭环发分集方案优于STTD，但随着Doppler频率的增加，闭环模式的性能迅速恶化，而STTD受影响较小，故在高时变信道中更适宜采用STTD方案.
Abstract：Simple close form expressions for STTD's theoretical performancewith or without channel estimation error in flat Rayleigh channel are derived. Simulation comparison between STTD and the two closed loop transmit diversity modes shows that when the maximal Doppler frequency is small the closed loop modes have better performance, but when the Doppler frequency increases this doesn't hold. STTD tends to have a better performance in that case.
作者：杜志敏, 薛强, 吴伟陵,
关键词：宽带CDMA, STTD天线开环发分集模式, 二元误判概率, 平坦瑞利信道,
