| WCDMA中天线开环发分集模式STTD的性能分析 |
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| 引用本文： | 杜志敏,薛强,吴伟陵.WCDMA中天线开环发分集模式STTD的性能分析[J].北京邮电大学学报,2001,24(1):47-51. |
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| 作者姓名： | 杜志敏 薛强 吴伟陵 |
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| 作者单位： | 北京邮电大学信息工程学院, 北京 100876 |
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| 基金项目： | 国家自然科学基金重大资助项目(69896243) |
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| 摘 要： | 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.
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| 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 |
| 文章编号： | 1007-5321(2001)01-0047-05 |
| 收稿时间： | 2000-07-04 |
| 修稿时间： | 2000年7月4日 |
Analysis of STTD Antenna Transmit Diversity for WCDMA |
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| DU Zhi min,XUE Qiang,WU Wei ling.Analysis of STTD Antenna Transmit Diversity for WCDMA[J].Journal of Beijing University of Posts and Telecommunications,2001,24(1):47-51. |
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| Authors: | DU Zhi min XUE Qiang WU Wei ling |
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| Affiliation: | Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | Simple close form expressions for STTD's theoretical performance with 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. |
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| Keywords: | WCDMA STTD transmit diversity pairwise error probability flat Rayleigh channel |
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