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引用本文：

戈勇华,罗仁泽,党煜蒲,等.OFDM系统时间同步方法性能比较[J].电讯技术，2011，51（7）： - . [点击复制]
GE Yong-hua,LUO Ren-ze,DANG Yi-pu,et al.Performance Comparison among Timing Synchronization Algorithms for OFDM Systems[J].，2011，51（7）： - . [点击复制]

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OFDM系统时间同步方法性能比较
戈勇华,罗仁泽,党煜蒲,易丹
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(重庆邮电大学光纤通信重点实验室光互联网研究所，重庆 400065;西南石油大学，成都 610500)

摘要:

分类总结了典型的OFDM系统常用同步算法，讨论了各类时间同步算法的优缺点，并仿真比较了具有代表性的算法性能，提出了提高时间同步性能应从叠加训练序列、共轭对称结构等方面考虑的建议，这对OFDM系统时间同步研究具有一定的指导意义。

关键词: 正交频分复用时间同步循环前缀叠加训练序列性能比较

DOI：

基金项目:国家自然科学基金资助项目（61072073）;四川省教育厅重点项目（10ZA072）;西南石油大学新进高层次教师科研启动基金

Performance Comparison among Timing Synchronization Algorithms for OFDM Systems

GE Yong-hua,LUO Ren-ze,DANG Yi-pu,YI Dan

(Key Laboratory of Optical Fiber Communication Optical Internet Institute,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Key Laboratory of Optical Fiber Communication Optical Internet Institute,Chongqing University of Posts  and Telecommunications,Chongqing 400065,China;Southwest Petroleum University,Chengdu 610500,China)

Abstract:

Timing synchronization algorithms commonly used in typical OFDM systems are classified and summarized.The advantages and disadvantages of v arious timing synchr onization algorithms are discussed.The performance of typical algorithms is comp ared through simulation.Suggestion is given that superimposed training sequence and symmetric pr operty structure should be taken into consideration to improve the timing synchr onization performance,which has certain significance of guidance for the study o f time synchronization algorithms in OFDM systems.

Key words: OFDM timing synchronization cyclic prefix superimposed training sequence perf ormance comparison