北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2003, Vol. 26 ›› Issue (1): 9-13.

• 学术论文 • 上一篇    下一篇

任意Nakagami衰落信道下2D-Rake接收机的性能分析

吕旌阳, 薛 强, 吴伟陵   

  1. 北京邮电大学 信息工程学院, 北京 100876
  • 出版日期:2004-01-28
  • 作者简介:吕旌阳(1969—),男,博士生。
  • 基金资助:
    国家自然科学基金资助项目(60172051)

Performance Analysis of 2D-Rake Receiver in a Nakagami Fading Channel with Arbitrary Parameters

LU Jing-yang, XUE Qiang, WU Wei-ling   

  1. Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Online:2004-01-28

摘要: 研究了单小区直扩码分多址(DS-CDMA)通信系统在任意Nakagami衰落信道下2D-Rake接收机的性能,推导出误码率的解析表示式。理论分析和数值计算结果表明,2D-Rake接收机获得了独立多径信号较大的空时分集增益,其误码率性能远优于普通的Rake或多天线接收机。系统的用户容量也有显著的提高。

关键词: DS-CDMA, 2D-Rake接收机, Nakagami衰落

Abstract: Based on beam-forming and conventional Rake technology, 2D-Rake receiver is composed of antennas array, time-delay, beamforming, coherent demodulation,despread, and maximum rate combing (MRC). In Nakagami fading channel with arbitrary parameter, the bit error rate (BER) of 2D-Rake receiver is investigated for single cell coherent DS-CDMA system. Theoretic analysis and numerical results indicate that 2D-Rake receiver can achieve the space-temporal gain from independent multipath component, and its BER get an advantage over the conventionalRake receivers or the multi-antenna receiver. The number of users supported bythe system is also increased in a great deal.

Key words: DS-CDMA, 2D-Rake receiver, Nakagami fading

中图分类号: