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应用科学学报 ›› 2002, Vol. 20 ›› Issue (1): 47-50.

• 论文 • 上一篇    下一篇

CDMA信号在衰落信道中的低复杂性盲多用户检测

林志强, 尤肖虎, 王勇   

  1. 东南大学国家移动通信重点实验室, 江苏南京 210096
  • 收稿日期:2000-10-11 修回日期:2001-03-09 出版日期:2002-03-31 发布日期:2002-03-31
  • 作者简介:林志强(1964-),男,福建福州人,博士生;尤肖虎(1962-),男,江苏苏州人,教授,博导.
  • 基金资助:
    国家自然科学基金资助项目(69725001)

Low-complexity Blind Multiuser Detection of CDMA Signals in Fading Channels

LIN Zhi-qiang, YOU Xiao-hu, WANG Yong   

  1. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210003, China
  • Received:2000-10-11 Revised:2001-03-09 Online:2002-03-31 Published:2002-03-31

PDF

106

被引次数

15

摘要： 分析码分多址(CDMA)信号在衰落信道中的盲多用户检测.在实际通信系统中当信号处于深衰落时,最小均方误差(MMSE)检测器经常失去对信号的相位跟踪.文中提出了一种次优化子空间盲MMSE检测算法,运用目标用户特征波形和辅助向量对信号相位进行去耦处理,使盲MMSE检测器具有次优化低复杂性的结构和算法,并且适合衰落信道.

关键词: 衰落信道, 码分多址, 最小均方误差检测器

Abstract: The problem of blind multiuser detection of CDMA signals in fading channels is considered. It is noted that the minimum-mean-square-error (MMSE) detector often loses phase to lock a desired signal when the desired signal dips into a deep fade. This paper proposes a suboptimal blind MMSE detector that is incorporated into the desired user's signature waveform and the auxiliary vector to achieve low-complexity. It decouples the signal phase, and fits into realistic fading channels.

Key words: code-division multiple-access, minimum-mean-square-error detector, fading channels

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