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OFDM時頻捕獲的聯(lián)合算法

雷俊,  吳樂南

雷俊, 吳樂南. OFDM時頻捕獲的聯(lián)合算法[J]. 電子與信息學(xué)報, 2006, 28(3): 400-403.
引用本文: 雷俊, 吳樂南. OFDM時頻捕獲的聯(lián)合算法[J]. 電子與信息學(xué)報, 2006, 28(3): 400-403.
Lei Jun, Wu Le-nan. A Joint Time and Frequency Acquisition Algorithm for OFDM Systems[J]. Journal of Electronics & Information Technology, 2006, 28(3): 400-403.
Citation: Lei Jun, Wu Le-nan. A Joint Time and Frequency Acquisition Algorithm for OFDM Systems[J]. Journal of Electronics & Information Technology, 2006, 28(3): 400-403.

OFDM時頻捕獲的聯(lián)合算法

A Joint Time and Frequency Acquisition Algorithm for OFDM Systems

  • 摘要: 該文提出了一種OFDM時頻捕獲的聯(lián)合算法：利用周期前綴的相關(guān)性實現(xiàn)符號粗同步和小數(shù)頻偏的糾正，并在幀頭符號插入差分導(dǎo)頻可同時完成幀同步和整數(shù)頻偏估計。在中短波信道的仿真結(jié)果驗證了該算法的準(zhǔn)確性和實用性。
    Abstract: A combined time and frequency acquisition algorithm for OFDM systems is derived in this paper. The proposed technique estimates the symbol beginning and the fractional frequency offset with the periodicity of Cyclic Prefix (CP), and simultaneously achieves the frame synchronization and the integral frequency offset correction based on differential pilot subcarriers in the first symbol of a transmission frame. Simulation results in MW/SW channels indicate the accuracy and practicability of this approach.
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  • European Telecommunications Standards Institute. Digital RadioMondiale (DRM); System Specification. ETSl ES 201 980,2002.[2]Van de Beek J J, Sandell M, Borjesson P 0. ML estimation oftime and frequency offset in OFDM systems[J].IEEE Trans. onSignal Processing.1997,45(7):1800-1805[3]Takahashi K, Saba T. A novel symbol synchronization algorithmwith reduced influence of IS1 for OFDM systems. IEEE GlobalTelecommunications Conference (GLOBECOM'Ol), San Antonio,Texas, USA, 2001, 1 : 524-528.[4]Classen F, Meyr H. Frequency synchronization algorithms forOFDM systems suitable for communication over frequencyselective fading channels. IEEE 44th Vehicular TechnologyConference (VTC'94). Stockholm, Sweden, 1994,3: 1655-1659.[5]Speth M, et al.. Optimum receiver design for OFDM-basedbroadband transmission-Part 11: A case study[J].IEEE Trans. onComm.2001,49(4):571-578[6]Nogami H, Nagashima T. A frequency and timing periodacquisition technique for OFDM systems[J].IEEE 6th Int.Symposium on Personal Indoor and Mobile RadioCommunications (PIMRC'95), Toronto, Canada.1995, 3:1010-1015[7]Hsieh Meng-Han, Wei Che-Ho. A frequency acquisition schemefor OFDM systems. IEEE 7th Int. Symposium on Personal Indoorand Mobile Radio Communications (P1MRC196), Taipei, Taiwan,1996,3: 843-847.[8]Hofmann F, Hansen C, Schafer W. Digital Radio Mondiale (DRM)digital sound broadcasting in the AM bands[J].IEEE Trans. onBroadcasting.2003,49(3):319-328[9]Kurpiers A, Fischer V. Open-source implementation of a DigitalRadio Mondiale (DRM) receiver. IEE 9th InternationalConference on HF Radio Systems and Techniques, Bath, UK,2003: 86-90.[10]雷俊, 吳正南. 改進(jìn)的 OFDM 符號粗同步算法. 電波科學(xué)學(xué)報.[11]Watterson C C, Juroshek J J, Bensema W D. Experimentalconfirmation of an HF channel model[J].IEEE Trans. on Comm.1970, 18(6):792-803
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出版歷程
  • 收稿日期:  2004-06-03
  • 修回日期:  2004-10-29
  • 刊出日期:  2006-03-19

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