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应用科学学报 ›› 2005, Vol. 23 ›› Issue (3): 225-229.

• 论文 • 上一篇    下一篇

一种阵列天线与干扰抵消技术相结合的宽带CDMA接收机

颜永庆, 赵春明, 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:2004-03-20 修回日期:2004-06-18 出版日期:2005-05-31 发布日期:2005-05-31
  • 作者简介:颜永庆(1965-),男,山东青州人,高工,博士,E-mail:yqyan@seu.edu.cn;赵春明(1959-),男,江苏江都人,教授,博导,E-mail:cmzhao@seu.edu.cn;尤肖虎(1962-),男,江苏苏州人,教授,博导,E-mail:xhyu@seu.edu.cn

A Wide-Band CDMA Receiver of Adaptive Antenna Arrays Combined with Interference Cancellation

YAN Yong-qing, ZHAO Chun-ming, YOU Xiao-hu   

  1. National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China
  • Received:2004-03-20 Revised:2004-06-18 Online:2005-05-31 Published:2005-05-31

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摘要： 提出了一种自适应阵列天线与干扰抵消技术相结合的DS-CDMA接收机,通过改进的并行干扰抵消技术,对阵列天线合成后"峰指"信号中的多址干扰信号作进一步的消除或抑制.通过理论分析和仿真,验证这种接收机在Rayleigh衰落信道下,较单独使用阵列天线接收或并行干扰抵消技术,具有更好的接收性能.

关键词: 干扰抵消, 码分多址, 自适应天线阵列, 波束成形

Abstract: A wide-band CDMA receiver combined with adaptive antenna arrays and partial parallel interference cancellation (PPIC) is proposed.An novel pilot aided spatial-temporal receiver architecture for wide-band CDMA reverse links is proposed in the first stage to separate the signals in space.An improved parallel interference cancellation is employed for further reduction of residual multiple access interference (MAI) especially for in-beam MAI.Simulation results show that the performance of the receiver proposed is superior to the traditional adaptive antenna arrays or PPIC used alone in time variant Rayleigh fading channels.

Key words: beamforming, adaptive antenna array, CDMA, interference cancellation

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