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Volume 28 Issue 4
Aug.  2010
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Liu De-liang, Wang Jin-long . Symbol Timing Estimation under Large Frequency Offset and Low Signal to Noise Ratio in OFDM Systems[J]. Journal of Electronics & Information Technology, 2006, 28(4): 693-697.
Citation: Liu De-liang, Wang Jin-long . Symbol Timing Estimation under Large Frequency Offset and Low Signal to Noise Ratio in OFDM Systems[J]. Journal of Electronics & Information Technology, 2006, 28(4): 693-697.

Symbol Timing Estimation under Large Frequency Offset and Low Signal to Noise Ratio in OFDM Systems

  • Received Date: 2004-08-01
  • Rev Recd Date: 2005-05-07
  • Publish Date: 2006-04-19
  • Symbol timing estimation is one of key problems in OFDM systems. In this paper a new symbol timing estimation algorithm based on a training symbol is proposed. The study shows that the new algorithm is not affected by carrier frequency offset basically, and has strong characteristic of resisting noise. Through adopting this algorithm the timing error is shortened to a half of the sample time interval. Furthermore the frequency-domain training symbol can be used to estimate carrier frequency offset, so only a training symbol is needed to complete joint acquisition of symbol timing and carrier frequency offset.
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  • Choi Y S, Voltz P J, Cassara F A. ML estimation of carrier frequency offset for multicarrier signals in Rayleigh fading channels[J]. IEEE Trans. on Vehicular Technology, 2001, 50(2): 644655. .[2]van de Beek J J, B.orjesson P O. ML estimation of time and frequency offset in OFDM[J]. IEEE Trans. on Signal Processing, 1997, 45(7): 18001805. .[3]Schmidl T M, Cox D C. Robust frequency and timing synchronization for OFDM [J]. IEEE Trans. on Commun., 1997, 45(12): 16131621. .[4]Liu H, Tureli U. A high-efficiency carrier estimator for OFDM Communications. IEEE Communication Letters[J], 1998, 2(4): 104106. .[5]Han D S, Seo J H, Kim J J. Fast carrier frequency offsetcompensation in OFDM Systems[J]. IEEE Trans. on Consumer Electronics, 1999, 47(3): 364369.[6]Minn H. A simple and efficient timing offset estimation for OFDM systems[A]. Proceeding of the 51th IEEE Vehicular Technology Conference[C]. Tokyo, Japan, 2000, Vol.1: 51.55.[7]Kim Y H, Song I, Yoon S. An efficient frequency offset estimator for OFDM systems and its performance characteristics[J].IEEE Trans. on Vehicular Technology.2001, 50(5):1307-[8]马章勇, 赵春明, 尤肖虎. 无线信道中OFDM系统时频同步新算法. 通信学报, 2003, 24(2): 7683. .[9]孙雪俊, 焦影, 曾虹虹. 一种新的MC-CDMA系统同步算法. 电子学报, 2004, 29(12A): 19041907. .[10]Barbarossa S, Pompili M, Giannakis G B. Channel-independent synchronization of orthogonal frequency division access systems[J]. IEEE J. on SAC, 2002, 20(2): 474486.
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