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基于循环前缀的OFDM符号同步算法改进及其实现 被引量：3

A Realization Scheme of Cyclic Prefix Based Symbol Synchronization in OFDM Systems
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摘要 提出一个基于循环前缀的OFDM系统符号同步算法的硬件实现方案,讨论了实现中要考虑的各种问题,同时对现有的算法进行简化及提出了优化同步性能的方法,并能用较简单的硬件结构来实现,同时给出相应的仿真结果与实现结构。 Symbol synchronization estimation is very important to OFDM systems. Redundant information contained within the cyclic prefix enables this estimation without additional pilots. A realization scheme for CP based symbol synchronization is proposed which could be implemented with lower hardware complexity. Analysis and simulation results were also provided.
作者 乔天柱 张海滨 罗汉文 宋文涛
机构地区 上海交通大学电子工程系
出处 《电视技术》 北大核心 2004年第9期4-7,共4页 Video Engineering
基金 国家自然科学基金重点项目(60332030) 国家高技术研究发展计划(863项目)重大专项项目(2001AA121031)
关键词 循环前缀 OFDM 正交频分复用 符号同步 最大似然估计 OFDM Symbol Synchronization ML Estimator
分类号 TN941.4 [电子电信—信号与信息处理]
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参考文献4

  • 1Speth Michael, Fechtel Stefan A, Fock Gunnar, et al.Optimum Receiver Design for OFDM -Based Broadband Transmission-Part Ⅱ: A Case Study. IEEE Trans. Comm, Nov 1999, 47(11): 571-578.
  • 2Van de Beek J J, Sandell M, Borjesson P O. ML estimation of time and frequency offset in OFDM systems.IEEE Trans. Signal Processing, July 1997, 45(7): 1800-1805.
  • 3Speth M, Classen F, Meyr H. Frame synchronization of OFDM systems in frequency selective fading channels. in Proc. VTC'97 May 1997: 1807-1811.
  • 4Yang Baoguo, Letaief Khaled Ben, Cheng Roger S, et al.Timing Recovery for OFDM Transmission. IEEE JSAC, Nov 2000, 18(11): 2278-2291.

同被引文献19

  • 1KO Y,TEPEDELENLIOGLU C. Orthogonal space-time block coded rate-adaptive modulation with outdated feedback [J]. IEEE Trans.Wireless Communications ,2006,5(2) :290-295.
  • 2ALAMOUTI S M. A simple transmit diversity technique for wireless communications [J]. IEEE Journal on Selected Areas in Communications, 1998,16(8) : 1451-1458.
  • 3TAROKH V,JAFARKHANI H,CALDERBANK A R. Space-time block codes from orthogonal designs[J]. IEEE Trans. Information Theory, 1999,45(5) : 1456-1467.
  • 4JAFARKHANI H.A quasi-orthogonal space-time block code[J]. IEEE Trans. Communica|ions, 2001,49 ( 1 ) : 1-4.
  • 5TIRKKONEN O,BOARIU A,HOTTINEN A.Minimal non-orthogonality rate 1 space-time block code for 3+ Tx antennas[C]//Proc.IEEE Sixth International Symposium on Spread Spectrum Techniques and Applications. Parsippany, N J, USA : IEEE Press, 2000,2:429-432.
  • 6Landstrom D,Wilsom S K and de Beek J J,Borjesson P O.Symbol Time OffsetEstimation in Coherent OFDM Systems.IEEE Trans.Commun,April 2002:545-549.
  • 7Van de Beek J J,Sandell M,Borjesson P O.ML estimation of time andfrequency offest in OFDM systems.IEEE Transaction on Signal Processing,1997:1800-1805.
  • 8Tureli U,Liu H.A high-efficiency carrier estimator for OFDMcommunications.ESPRIT,IEEE Transaction on,communications,2000:1459-1461.
  • 9Liu H,Tureli U.A hingh-efficiency carrier estimator for OFDMcommunications.IEEE Communications Letters,1998:104-106.
  • 10Blocskei H.Blind estimation of symbol timing and carrier frequency offset inwireless OFDM systems.IEEE Transactions on Communicatons,2001:988-999.

引证文献3

二级引证文献8

电视技术
2004年 第9期

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