English

应用科学学报 ›› 2001, Vol. 19 ›› Issue (4): 327-332.

• 论文 • 上一篇    下一篇

正交频分复用通信系统的联合同步算法

束锋, 刘毅峰, 罗琳, 吴乐南   

  1. 东南大学无线电工程系, 江苏南京 210096
  • 收稿日期:2000-10-11 修回日期:2001-01-03 出版日期:2001-12-31 发布日期:2001-12-31
  • 作者简介:束锋(1973-),男,安徽铜城人,博士生;吴乐南(1952-),男,安徽枞阳人,教授,博导.
  • 基金资助:
    国家自然科学基金资助(60072013)

A Combined Synchronization Method for OFDM System

SHU Feng, LIU Yi-feng, LUO Ling, WU Le-nan   

  1. Department of Radio Engineering, Southeast University, Nanjing 210096, China
  • Received:2000-10-11 Revised:2001-01-03 Online:2001-12-31 Published:2001-12-31

PDF

69

被引次数

26

摘要： 为多载波通信系统设计一种联合同步算法,能很好地解决多载波系统中的帧、符号和载波联合同步问题.从理论角度简单地分析该算法的性能,并针对多径信道进行了仿真.仿真显示该算法不仅提供高精度的频偏估计,而且提供足够精度的时间同步,从而有效地减少了时间同步估计误差和频偏所造成的符号间干扰(ISI)和子信道间干扰(ICI).

关键词: 时间同步, 帧同步, 符号同步, 载波同步, 正交频分复用

Abstract: In this paper, a combined synchronization method for OFDM system is proposed. It provides good synchronization for frame, symbol, and carrier. Theoretical analysis is made for the above method. In the case of multipath fading channel, the simulation result shows that the method provides not only accurate carrier synchronization but also high-resolution symbol synchronization. Consequently, intersymbol interference (ISI) and interchannel interference (ICI) from symbol timing error and frequency offset are effectively reduced.

Key words: time synchronization, frame synchronization, symbol synchronization, orthogonal frequency division multiplexing, carrier synchronization

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