WCDMA中天线开环发分集模式STTD的性能分析

北京邮电大学学报 ›› 2001, Vol. 24 ›› Issue (1): 47-51.

WCDMA中天线开环发分集模式STTD的性能分析

杜志敏, 薛强, 吴伟陵

北京邮电大学信息工程学院, 北京 100876

收稿日期:2000-07-04 出版日期:2001-01-10
作者简介:杜志敏(1975—),男,武汉市人,博士生.
基金资助:
国家自然科学基金重大资助项目(69896243)

Analysis of STTD Antenna Transmit Diversity for WCDMA

DU Zhi-min, XUE Qiang, WU Wei-ling

Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2000-07-04 Online:2001-01-10

摘要/Abstract

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.

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

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.

Key words: WCDMA, STTD transmit diversity, pairwise error probability, flat Rayleigh channel

中图分类号:

TN929.533

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.

DU Zhi-min, XUE Qiang, WU Wei-ling. Analysis of STTD Antenna Transmit Diversity for WCDMA[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2001, 24(1): 47-51.