北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2011, Vol. 34 ›› Issue (5): 105-109.doi: 10.13190/jbupt.201105.105.lichy

• 研究报告 • 上一篇    下一篇

OFDM电力线载波通信系统的定时同步改进方法

李春阳,黑勇,乔树山   

  1. 中国科学院 微电子研究所, 北京 100029
  • 收稿日期:2010-12-21 修回日期:2011-04-18 出版日期:2011-10-28 发布日期:2011-08-26
  • 通讯作者: 李春阳 E-mail:hawking139@163.com

An Improved Timing Synchronization Scheme for OFDM  Based Power Line Communication Systems

  • Received:2010-12-21 Revised:2011-04-18 Online:2011-10-28 Published:2011-08-26

摘要:

讨论了正交频分复用(OFDM)电力线载波通信系统的定时同步方法,在传统算法的基础上,提出了一种针对多径情况下的定时同步的改进算法. Matlab仿真结果表明,该算法可以明显改善电力线载波通信系统在多径信道下的系统性能,并具有复杂度低、硬件开销少等特点.

关键词: 正交频分复用, 电力线载波通信, 定时同步

Abstract:

Timing synchronization schemes for orthogonal frequency division multiplexing (OFDM)based power line communication system is discussed. Based on the traditional method, a new algorithm is proposed to attenuate the interference over multipath channel. Matlab simulation proves that the proposed approach can improve the system performance over multipath channel. It also has fewer hardware consumptions and lower complexity.

Key words: orthogonal frequency division multiplexing, power line communication, timing synchronization

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