北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2002, Vol. 25 ›› Issue (1): 68-72.

• 学术论文 • 上一篇    下一篇

一种新的时分导频信道估计算法

徐霞艳,林家儒,吴伟陵   

  1. 北京邮电大学信息工程学院, 北京 100876
  • 收稿日期:2001-04-02 出版日期:2002-01-10
  • 作者简介: 徐霞艳(1976—),男,硕士
  • 基金资助:
    国家自然科学基金资助项目(69896243)

A New Channel Estimation Algorithm for Time-Multiplexed#br# Pilot Channel

XU Xia-yan, LIN Jia-ru, WU Wei-ling   

  1. Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2001-04-02 Online:2002-01-10
  • Supported by:
     

摘要: 提出了一种适用于时分导频信道的信道估计算法,该算法利用多个相邻时隙中导频符号上的瞬时信道估计进行加权LSM拟合,得到数据符号上的信道估计。仿真结果表明,该算法能较好地跟踪多径衰落信道的变化,采用该算法的相干Rake接收机的性能在较大范围多普勒频移下均比较稳定。

关键词: 码分多址, 多径衰落, 信道估计

Abstract: A new channel estimation algorithm based on time-multiplexed pilot channel is proposed. By weighted LSM fitting over multi-slot, the complex channel coefficients are estimated. Simulation results show that thenew algorithm can track the variation of multipath channel better than several other algorithms, such as linear interpolation. The performance of Rake receiverapplying the new channel estimation algorithm is basically stable under a widerrange of Doppler frequency.

Key words: code division multiple access, multipath fading, channel estimation

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