全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

最小正交频移多载波直扩系统的地址码设计

DOI: 10.13190/jbupt.200605.115.174, PP. 115-119

Keywords: 多载波直接扩频系统,互补码,零相关窗,码分多址

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了设计出载波间隔只有码片周期倒数一半的多载波直接扩频系统,提出一类分组零相关窗(ZCW)地址码.此地址码由某些ZCW互补码与扩展矩阵直积得到,每个互补码扩展成一组码,组内码字的相关特性取决于扩展矩阵,不同组之间的码字仍有ZCW.接收机只需对一组码字而非所有码字联合检测.仿真表明,这类分组码在多径信道中以1~2dB的信噪比代价就可几倍地提高传信率.

References

[1]  Hara S, Prasad R. Overview of multicarrier CDMA[J]. IEEE Communications Magazine, 1997, 35(12): 126-133.
[2]  袁超伟, 杨英. 基于最佳小波包基的多载波CDMA[J]. 北京邮电大学学报, 2001, 24(3): 11-16. Yuan Chaowei, Yang Ying. Optimal wavelet packet multicarrier CDMA [J]. Journal of Beijing University of Posts and Telecommunications, 2001, 24(3):11-16.
[3]  徐绍君, 李道本. 多径衰落信道下的扩频码设计与联合检测[J]. 通信学报, 2004, 25(4): 15-22. Xu Shaojun, Li Daoben. Spreading code design and joint detection in multi-path fading channels[J]. Journal of China Institute of Communications, 2004, 25(4): 15-22.
[4]  Golay M. Complementary series [J]. IEEE Transactions on Information Theory, 1961, 7(2): 82-87.
[5]  Fan Pingzhi, Darnell M. Sequence design for communications applications [M]. London: Research Studies Press Ltd, 1996.
[6]  Li Daoben. A spread spectrum multiple access coding method with zero correlation window. PCT/CN00/00028, 2000.
[7]  董江波, 邹永忠, 李道本. 一种用于LAS-CDMA/AMC系统下行链路的SNR测量方法[J]. 北京邮电大学学报, 2003, 26(4): 66-69. Dong Jiangbo, Zou Yongzhong, Li Daoben. A SNR measurement applied to the downlink LAS-CDMA system[J]. Journal of Beijing University of Posts and Telecommunications, 2003, 26(4): 66-69.
[8]  Prokies J G. Digital communication[M]. Beijing: Publishing House of Electronics Industry, 1998.
[9]  Verdu S. Multiuser detection[M]. New York: Cambridge University Press, 1998.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133