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时变衰落信道中同步时间扩展信号的分集接收技术

孟德香 吴湛击 梁红玉 吴伟陵

孟德香, 吴湛击, 梁红玉, 吴伟陵. 时变衰落信道中同步时间扩展信号的分集接收技术[J]. 电子与信息学报, 2005, 27(11): 1695-1698.
引用本文: 孟德香, 吴湛击, 梁红玉, 吴伟陵. 时变衰落信道中同步时间扩展信号的分集接收技术[J]. 电子与信息学报, 2005, 27(11): 1695-1698.
Meng De-xiang, Wu Zhan-ji, Liang Hong-yu, Wu Wei-ling. Diversity Receiving Technique for Synchronous Time Spreading Signal in Time-Varying Fading Channels[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1695-1698.
Citation: Meng De-xiang, Wu Zhan-ji, Liang Hong-yu, Wu Wei-ling. Diversity Receiving Technique for Synchronous Time Spreading Signal in Time-Varying Fading Channels[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1695-1698.

时变衰落信道中同步时间扩展信号的分集接收技术

Diversity Receiving Technique for Synchronous Time Spreading Signal in Time-Varying Fading Channels

  • 摘要: 扩频通信可以区分多径信号进行RAKE分集接收,是一种有效处理多径效应的手段。与此对应,时间扩展通信也可以在频域上进行类似RAKE的分集接收,有效处理时变衰落带来的影响。时间扩展会带来严重的符号间干扰,同步时间扩展可以有效控制和处理符号间干扰。基于信道分解的分集接收技术保证了同步时间扩展在时变衰落信道下的性能。获得10-4误码率,本文分集算法(扩展长度1024)在时变衰落信道中所需的信噪比与AWGN信道不分集处理所需的信噪比只相差1.4dB。
  • Proakis J. Digital Communications, New York, McGraw Hill, 4th ed., 2001: 822 830, 842-851.[2]Wittneben A. An energy- and bandwidth-efficient data[3]transmission system for time-selective fading channels. in Proc.[4]IEEE GLOBECOM, San Diego, CA., Dec. 1990: 1968-1972.[5]Davies E T J, Linde L P. A novel time spread mechanism to combat flat fading. in COMSIG 97 Proc., Grahamstown, South African, Sept. 1997, 59-62.[6]Swanepoel S A, Linde L P. A time spread technique with interference cancellation for fading mobile communication channels. 1999 IEEE AFRICON, Cape Town, South Africa, Sept.1999: 131-134.[7]Meng D, Wu Z, Liang H, Wu W. A novel time spreading technique for fading mobile channels. in FTC 2003 Proc., Beijing, China, Dec. 2003: 301-304.[8]孟德香,梁红玉,吴伟陵. 基于同步时间扩展处理的信道编码,无线电工程,2004, 34(3): 7-9.[9]Sayeed A M.[J].Aazhang B. Exploiting Doppler diversity in mobile wireless communications. in Proc. 1997 Conf. Information Sciences and Systems (CISS97), Baltimore, MD.1997,:-[10]Lee J S, Miller L E等著, 许希斌, 周世东等译. CDMA系统工程手册(CDMA System Engineering Handbook),北京人民邮电出版社,2001.[11]Andoh H.[J].Sawahashi M, Adachi F. Channel estimation using time multiplexed pilot symbols for coherent Rake combining for DS-CDMA mobile radio. in Proc. PIMRC97, Helsinki, FI, Sept.1997,:-
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出版历程
  • 收稿日期:  2004-04-12
  • 修回日期:  2005-05-11
  • 刊出日期:  2005-11-19

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