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应用科学学报 ›› 2004, Vol. 22 ›› Issue (1): 41-45.

• 论文 • 上一篇    下一篇

OFDM系统的一种新的信道参数估计方法

韩冰, 高西奇, 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:2002-11-25 修回日期:2003-06-02 出版日期:2004-03-31 发布日期:2004-03-31
  • 作者简介:韩冰(1974-),女,山东即墨人,博士生;高西奇(1967-),男,安徽灵壁人,教授,博导;尤肖虎(1962-),男,江苏南京人,教授,博导.
  • 基金资助:
    国家863计划资助项目(2001AA123015)

A Novel Channel Parameter Estimation Method for OFDM Systems

HAN Bing, GAO Xi-qi, YOU Xiao-hu   

  1. National Mobile Communication Research Lab, Southeast University, Nanjing 210096, China
  • Received:2002-11-25 Revised:2003-06-02 Online:2004-03-31 Published:2004-03-31

PDF

73

被引次数

23

摘要： 首先研究了多径衰落信道在OFDM系统中的特点,然后提出了一种新信道参数估计方法,该方法在粗略估计等效相关信道的各路径参数的基础上,利用各路径之间的相关性,分别估计出原始独立衰落信道的各路径时延和幅度.由于独立衰落信道的路径数目远小于等效相关信道的路径数目,该方法能够降低信道加性白噪声对信道估计性能的影响,从而有效地提高信道估计的精度.

关键词: 信道估计, 多径衰落信道, 正交频分复用

Abstract: Based on the sparse-leakage channel, a novel channel parameter estimation method is proposed. This method exploits the correlation of the paths of the discrete-time correlated multipath channel to estimate the delay and amplitude of the original channel. Since the number of paths of the original channel is much smaller than that of the discrete-time correlated multipath channel, proposed channel parameter estimation method can suppress the AWGN and improve the accuracy of the channel estimation.

Key words: OFDM, multipath fading channel, channel estimation

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