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应用科学学报 ›› 2004, Vol. 22 ›› Issue (4): 443-448.

• 论文 • 上一篇    下一篇

一种多普勒频偏估计方法及分析

华惊宇, 马章勇, 孟庆民, 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:2003-07-09 修回日期:2004-05-17 出版日期:2004-12-31 发布日期:2004-12-31
  • 作者简介:华惊宇(1978-),男,上海人,博士生;尤肖虎(1962-),江苏苏州人,教授,博导.
  • 基金资助:
    国家863计划资助项目(2001AA123015)

Design and Analysis of a Scheme for the Doppler Shift Estimation

HUA Jing-yu, MA Zhang-yong, MENG Qing-min, YOU Xiao-hu   

  1. National Mobile Communication Research Lab, Southeast University, Nanjing 210096, China
  • Received:2003-07-09 Revised:2004-05-17 Online:2004-12-31 Published:2004-12-31

PDF

69

被引次数

13

摘要： 利用有效到达径上信道估计值包络的电平通过率,估计出时变多径信道的多普勒频偏,并分析了影响该频偏估计的几个系统参数,得到了合适的系统参数选取原则.同时在理论上分析了噪声环境下电平通过率的估计偏移,提出了修正方法,使得通信系统在各种移动速度和信噪比下都具有较高的估计精度.

关键词: 电平通过率, 多普勒频偏, 信道估计

Abstract: The Doppler-shift of the time-varying multi-path channel can be estimated by calculating the level crossing rate (LCR) of the signal envelope of the channel coefficient estimates on the effective fingers. Also some parameters relating to the Doppler shift are analyzed, and an improved estimation method to get the high estimation accuracy in all kinds of velocity and signal-to-noise ratio is raised.

Key words: level crossing rate(LCR), Doppler-shift, channel estimation

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