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应用科学学报 ›› 2004, Vol. 22 ›› Issue (3): 298-302.

• 论文 • 上一篇    下一篇

CDMA系统中一种改进的Rake接收机算法研究

赵军辉, 王东明, 尤肖虎   

  1. 东南大学移动通信国家重点实验室 江苏南京 210096
  • 收稿日期:2003-06-05 修回日期:2003-08-27 出版日期:2004-09-30 发布日期:2004-09-30
  • 作者简介:赵军辉(1973-),男,安徽宣城人,博士生;尤肖虎(1962-),男,江苏苏州人,教授,博导.
  • 基金资助:
    国家自然科学基金(2001AA123015);东大通信技术有限责任公司资助项目

An Improved Rake Receiver Algorithm of the CDMA System

ZHAO Jun-hui, WANG Dong-ming, YOU Xiao-hu   

  1. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
  • Received:2003-06-05 Revised:2003-08-27 Online:2004-09-30 Published:2004-09-30

PDF

66

被引次数

19

摘要： 为了消除CDMA系统中的多径干扰,提出了一种改进的并行多径干扰抵消Rake接收机算法.首先分析了传统Rake接收机中产生多径干扰和多址干扰的原因,对改进的Rake接收机算法进行了理论分析,得出了其误比特率解析表达式并给出了其简化算法,然后在不同的信道条件下对此算法进行了蒙特卡罗仿真.理论分析和仿真结果表明,提出的算法可以大大改进传统Rake接收机的性能.

关键词: 码分多址, 并行多径干扰抵消, Rake接收机

Abstract: In order to suppress the multipath interference in the CDMA system, an improved Rake receiver based on parallel multipath interference cancellation technique (PMPIC) is proposed in this paper. The cause of multipath interference and multi-user access interference is first analysed. Next an improved Rake receiver is given a theoretical analysis and its simplification algorithm is also proposed. The PMPIC is studied by Monte Carlo simulation under different channel environments. Theoretical analysis and computer simulations illustrate that the improved Rake receiver can give significant improvement when compared with the conventional Rake receiver.

Key words: CDMA, Rake receiver, parallel multipath interference cancellation

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