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一种在OFDM系统中提高同步估计性能的方法 被引量：3

A Method of Improving Performance of Synchronization Estimation for OFDM Systems
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摘要 正交频分复用(OFDM)作为未来移动通信的主导技术,其同步仍是需要研究的重要课题.针对Schmidl&Cox同步算法在符号定时同步估计中的不准确性,提出对训练序列作符号同步相关运算的滑动窗口进行改进,仿真表明所提方法的有效性. Orthogonal Frequency Division Multiplexing （OFDM） is the dominant technology of the future mobile communication and its synchronization is still an important subject need to be studied. Contraposed to the inaccuracy of the Schmidl ＆ Cox Synchronization Algorithm in the symbol timing synchronization estimation, we propose an improvement of the sliding window that take symbol synchronization correlation operation on the training sequence. The simulation results show the effectiveness of the proposed method.
作者 李旭 苏少明 刘桓 吕文祥
机构地区 北京交通大学轨道交通控制与安全国家重点实验室
出处 《北京交通大学学报》 CAS CSCD 北大核心 2009年第5期11-14,共4页 JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金 国家自然科学基金资助项目(60674009) 轨道交通控制与安全国家重点实验室开放课题项目资助(2007k008)
关键词 正交频分复用 同步算法 滑动窗口 orthogonal frequency division multiplexing （OFDM） synchronization algorithm slipping window
分类号 TN929.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献14

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二级参考文献7

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共引文献15

同被引文献24

  • 1Patel S,CiminiL J Jr,McNair B.Comparison of Frequency Offset Estimation Techniques for Burst OFDM[J].Proceedings of the IEEE VTC,2002:772-776.
  • 2Liu H,Tureli U.A High-Efficienxy Carrier Estimator for OFDM Communications[J].Communications Letters.IEEE,1998,2(4):104-106.
  • 3Chen B.Maximum Likelihood Estimation of OFDM Carrier Frequency Offset[J].Signal Processing Letters,IEEE,2002,9:123-126.
  • 4Lee Jungwon,Lou Hui Ling,Toumpakaris D,et al.A Blind Frequency Tracking Algorithm for OFDM Transmission Over Frequency Selective Channels[J].Proceedings of 2004 IEEE 60th Vechicular Technology Conference,Los Aageles,USA:IEEE,2004:578-585.
  • 5SCHMIDL T. M, COX D. C. , Robust Frequency and Timing Synchronization for OFDM [ J ]. IEEE Trans. Commun. , Dec. 1997, 45(12) : 1613 -1621.
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  • 8MOOSE P. A Technique for Orthogonal Frequency Division Multi- plexing Frequency Offset Correction[ J]. IEEE Trans. on Commu- nications, 1994, 42(10) : 2908 -2914.
  • 9KIM Hyunjae, KANG Hongku, HWANG Wooncheol, et al. An Im- proved Frequency Synchronization Scheme Using a Modified OFDM Burst Format for Wireless LAN Systems[ J]. IEEE Transactions on Consumer Electronics, 2000,46 (4) : 1021 - 1025.
  • 10LI Chi-Min, SUN Wei-Tse, WANG Pao-Jen. An Overlap S&C Method for OFDM Synchronization [ J ]. IECE Electronics Ex- press,2010,7 (24) :1773 - 1777.

引证文献3

二级引证文献7

北京交通大学学报
2009年 第5期

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