北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2004, Vol. 27 ›› Issue (6): 64-68.

• 论文 • 上一篇    下一篇

上行MC-CDMA系统中基于DFT变换的信道估计

郑 侃, 曾国燕, 王文博   

  1. 北京邮电大学 电信工程学院, 北京 100876
  • 收稿日期:2003-12-10 出版日期:2004-06-28
  • 作者简介: 郑 侃(1974—),男,博士生。E-mail: zkan@buptnet.edu.cn;王文博(1965—),男,教授,博士生导师。 E-mail: wbwang@bupt.edu.cn
  • 基金资助:
    国家“863计划”项目(2003AA12331004)

DFT-Based Channel Estimation for Uplink MC-CDMA

ZHENG Kan, ZENG Guo-yan, WANG Wen-bo   

  1. Telecomm unicati on Engineering School, Beijing Univ ersi t y of Pos ts and Telecommu ni cati ons, Beijing 100876, China
  • Received:2003-12-10 Online:2004-06-28

摘要: 提出了一种新颖的适用于多载波码分多址接入(MC-CDMA)系统上行链路的信道估计算法。在合理约束条件以及为每个用户特殊设计的导频序列辅助下,基于离散傅里叶变换(DFT)的上行信道估计算法能够获得较好的估计精度,同时无需牺牲过多的系统容量。仿真结果表明了该算法具有优良的最小均方误差性能。

关键词: 正交频分复用, 信道估计, 上行

Abstract: Proposes a novel channel estimation algorithm for multi-carrier codedivision multiplex access (MC-CDMA) systems on the uplink. With reasonable constraint and the assistant of special-designed pilot sequence for each user, the discrete fourier transform (DFT)-based uplink channel estimation algorithm can achieve good estimation accuracy without sacrificing much system capacity. Simulation results show the good performances of this method.

Key words: :orthogonal frequency division multiplexing, channel estimation, uplink

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