Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (5): 1040-1042.

• 电子技术 • 上一篇    下一篇

MC-CDMA系统中基于子空间的盲多用户检测器

刘辉, 张复春, 黄国华   

  1. 空军航空大学航空理论系, 吉林, 长春, 130022
  • 收稿日期:2007-12-06 修回日期:2008-05-09 出版日期:2009-05-20 发布日期:2010-01-03
  • 作者简介:刘辉(1978- ),男,讲师,博士,主要研究方向为多天线技术,多载波技术,多用户检测.E-mail:15151515@126.com
  • 基金资助:
    国家高技术研究发展计划“863”项目资助课题(2006AA706132)

Novel blind multiuser detector based on subspace in MC-CDMA

LIU Hui, ZHANG Fu-chun, HUANG Guo-hua   

  1. Dept. of Aviation Theory, Aviation Univ. of Air Force, Changchun 130022, China
  • Received:2007-12-06 Revised:2008-05-09 Online:2009-05-20 Published:2010-01-03

摘要: 采用码片速率采样建立了MC-CDMA系统的信号模型,研究了多径环境下基于子空间投影的MC-CDMA系统的盲多用户检测技术和迭代算法,并对多用户检测的输出采用最大比合并.仿真结果表明,检测器具有较强的抑制多址干扰和抗多径衰落的能力,并且能快速收敛.

Abstract: A signal model of MC-CDMA systems by sampling chip-rate is constructed.With this model,the blind multiuser detection and iterative algorithm of MC-CDMA systems based on subspace projection are studied in the multipath fading channel.And the output of multi-user detection is combined by maximum ratio.The results of numerical simulation and performance analysis show that the detector has the favorable performance of eliminating MAI and multipath fading resistance.Besides,it can converge rapidly.

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