北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (1): 99-102.doi: 10.13190/jbupt.200501.99.liuxm

• 研究报告 • 上一篇    

OFDM系统中高性能帧同步算法

刘晓明, 张中山, 刘元安   

  1. 北京邮电大学 电信工程学院, 北京 100876
  • 出版日期:2005-02-28 发布日期:2005-02-28

High Performance Frame Synchronization in OFDM Systems

LIU Xiao-ming, ZHANG Zhong-shan, LIU Yuan-an   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Online:2005-02-28 Published:2005-02-28

摘要:

提出了正交频分复用(OFDM)系统中一种新的帧同步算法。该算法采用一种具有中心对称结构的训练序列。借助于该训练序列,新算法在信噪比为10 dB且误报概率为10-3的环境下具有10-3的训练序列漏检概率。在实现时间同步的同时,载波频偏也可以被纠正到0.5倍的子载波间隔范围内。

关键词: 帧同步, 频偏估计, 正交频分复用

Abstract:

A new frame synchronization scheme in orthogonal frequency-division multiplexing (OFDM) system was proposed. Based on a central-symmetric training sequence, the miss detection probability of a training sequence in the proposed algorithm could be as small as 10-3 when signal noise rate is 10 dB and the false alarm probability is assumed to be 10-3. Carrier frequency offset could also be partially corrected within sub-carrier spacing of 0.5 as soon as frame synchronization is performed.

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