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基于训练符号的OFDM系统符号定时方案研究
引用本文:李军科,宋荣方,张士兵,张力军. 基于训练符号的OFDM系统符号定时方案研究[J]. 南京邮电大学学报(自然科学版), 2006, 26(6): 16-20,26
作者姓名:李军科  宋荣方  张士兵  张力军
作者单位:南京邮电大学,通信与信息工程学院,江苏,南京,210003;南京邮电大学,通信与信息工程学院,江苏,南京,210003;东南大学,移动通信国家重点实验室,江苏,南京,210096
基金项目:国家自然科学基金;国家重点实验室基金
摘    要:作为第四代移动通信的核心技术,正交频分复用(OFDM)系统愈来愈引起业界的普遍关注。文章首先分析了符号定时误差对系统性能的影响和克服方法,同时就基于训练符号的4种符号定时算法的性能进行了系统比较。另外,在此基础上提出了一种用CAZAC(常模零值自相关)做训练序列的符号定时算法。并在加性高斯白噪声信道和多径瑞利衰落信道上对新的算法性能作了计算机仿真分析。

关 键 词:正交频分复用  定时估计  训练符号  滑动窗
文章编号:1673-5439(2006)06-0016-05
收稿时间:2006-01-21
修稿时间:2006-01-212006-02-27

Timing Synchronization Based on Training Symbol for OFDM Systems
LI Jun-ke,SONG Rong-fang,ZHANG Shi-bing,ZHANG Li-jun. Timing Synchronization Based on Training Symbol for OFDM Systems[J]. JJournal of Nanjing University of Posts and Telecommunications, 2006, 26(6): 16-20,26
Authors:LI Jun-ke  SONG Rong-fang  ZHANG Shi-bing  ZHANG Li-jun
Affiliation:1. College of Communication and Information,Nanjing University of Posts and Telecommunications, Nanjing 210003, China; 2. National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China
Abstract:As a key technology for 4^th Generation wireless mobile communication system , OFDM has drawn more and more attention in communication fields. In this paper, effect of timing offset on systems performance and the way of Moreover, dealing with it are analyzed. Based on the training symbol, four kinds of timing estimator are compared. a superior timing estimator is proposed and simulated in AWGN and multipath fading channel.
Keywords:OFDM   Timing offset estimation    Training symbol    Sliding window
本文献已被 CNKI 维普 万方数据 等数据库收录!
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