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利用重复序列和循环前缀的OFDM频率同步新方法 被引量：3

New OFDM frequency offset estimation method using repeated sequences and cyclic prefix
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摘要 频率同步是OFDM(OrthogonalFrequencyDivisionMultiplexing)系统的关键技术之一。使用重复的PN(pseudo-noise)序列和循环前缀作频率同步的新方法,与仅利用重复PN序列的Tufvesson原方法相比,有估计精度高和范围大的优点。分析了新方法的估计精度,给出了新方法与原方法相比较的性能增益。理论分析结果和仿真结果非常吻合,证明了分析的正确性。 Frequency offset estimation is one of the key technology for orthogonal frequency division multiplexing systems. A new frequency offset estimation method that uses repeated pseudo-random sequences and cyclic prefix for frequency synchronization is proposed in this paper. Compared with Tufvesson＇s method,the proposed method has more precise estimation and larger estimation range. The estimation variance of the new method is analyzed and the margin gain to the old one is theoretically evaluated. Simulations results verify the theory analyses.
作者 严春林 李少谦 唐友喜 房家奕 罗霄
机构地区 电子科技大学通信抗干扰技术国家级重点实验室
出处 《电波科学学报》 EI CSCD 北大核心 2005年第6期844-848,共5页 Chinese Journal of Radio Science
基金 国家自然科学基金课题(60272009) 教育部博士点基金20020614001 国家高科技发展计划资助课题(2001AA1230131) 自然科学基金重大项目(60496313)
关键词 正交频分复用 频率同步 重复序列 循环前缀 orthogonal frequency division multiplexing frequency synchronization repeated sequence cyclic prefix
分类号 TN929 [电子电信—通信与信息系统]
  • 相关文献

参考文献12

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二级参考文献17

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共引文献12

同被引文献41

  • 1Bingham J A C.Multicarrier modulation for data transmission:an idea whose time has come[J].IEEE Commun Mag,1990,28(5):5-14.
  • 2ETS 300 401 Second Edition,Radio broadcasting systems;Digital Audio Broadcasting (DAB) to mobile,portable and fixed receivers[S].1997.
  • 3Reimers U.DVB-T:the COFDM-based system for terrestrial television[J].Electronics & Communication Engineerig Journal,1997,9(1):28-32.
  • 4Khun-Jush J,Schramm P,Wachsmann U,Wenger F.Structure and performance of the HIPERLAN/2 physical layer[c].in Proc.IEEE 49th Vehicular Technology Conf.,vol.5,1999:2667-2671.
  • 5Moose P H.A technique for orthogonal frequency division multiplexing frequency offset correction[J].IEEE Trans.on Commun.,1994,42(10):2908-2914.
  • 6Schmidl T M,Cox D C.Robust frequency and timing synchronization for OFDM.IEEE Trans.on Commun.,1997,45(12):1613-1621.
  • 7Van de Beek J J,Sandell M,Brjesson P O,ML estimation of timing and frequency offset in OFDM systems[J].IEEE Trans.on Signal Processing,1997,45(7):1800-1805.
  • 8Tufvesson F,Faulkner M,Edfors O.Time and frequency synchronization for OFDM using PN-sequence preambles[C],Proceedings of IEEE Vehicular Technology Conference,Amsterdam,The Netherlands,September 19-22,1999:2203 -2207.
  • 9Lambrette U,Speth M,Meyr H.OFDM burst frequency synchronization by single carrier training data.IEEE Communications Letters,1997,1(2):46-48.
  • 10Chen Biao.Maximum likelihood estimation of OFDM carrier frequency offset[J].IEEE Signal Processing Letters,2002,9(4):123-126.

引证文献3

二级引证文献20

电波科学学报
2005年 第6期

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