北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 1998, Vol. 21 ›› Issue (2): 66-70.

• 学术论文 • 上一篇    下一篇

DMT系统中频域子信道插入导频实现同步*

李祥明,乐光新   

  1. 北京邮电大学电信工程学院, 北京 100876
  • 收稿日期:1997-03-01 出版日期:1998-03-10
  • 基金资助:
    国家教委高等学校博士学科点专项科研基金资助项目

Sub-Channels Pilot Frequency Synchronization Method#br# of DMT System on the Frequency Domain

Li Xiangming, Yue Guangxin   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876
  • Received:1997-03-01 Online:1998-03-10
  • Supported by:
     

摘要: 研究了离散多音DMT系统频域子信道插入导频实现同步的方法, 证明采用该方法可以提取数据块定时及样值定时.找到了循环移位插值序列与其离散傅里叶变换的关系, 并将此关系应用到本系统中实现样值定时.

关键词: 导频同步, 定时同步, 离散多音

Abstract: The frequency domain sub-channels pilot frequency synchronization method of DMT system is studied.It is demonstrated that both blocks and samples timing recovery can be realized with this method.The relations between the circular shift interpolation sequence and discrete Fourier transform is found .Such a relation is successfully applied in the DMT system to realize the samples timing recovery.

Key words: pilot synchronization, time synchronization, discrete multiple tone

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