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一種利用重復(fù)序列的OFDM頻率同步新方法

嚴(yán)春林,  李少謙,  唐友喜,  羅霄,  房家奕

嚴(yán)春林, 李少謙, 唐友喜, 羅霄, 房家奕. 一種利用重復(fù)序列的OFDM頻率同步新方法[J]. 電子與信息學(xué)報(bào), 2005, 27(10): 1647-1650.
引用本文: 嚴(yán)春林, 李少謙, 唐友喜, 羅霄, 房家奕. 一種利用重復(fù)序列的OFDM頻率同步新方法[J]. 電子與信息學(xué)報(bào), 2005, 27(10): 1647-1650.
Yan Chun-lin, Li Shao-qian, Tang You-xi, Luo Xiao, Fang Jia-yi. A New OFDM Frequency Offset Estimation Method Using Repeated Sequences[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1647-1650.
Citation: Yan Chun-lin, Li Shao-qian, Tang You-xi, Luo Xiao, Fang Jia-yi. A New OFDM Frequency Offset Estimation Method Using Repeated Sequences[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1647-1650.

一種利用重復(fù)序列的OFDM頻率同步新方法

A New OFDM Frequency Offset Estimation Method Using Repeated Sequences

  • 摘要: 該文提出了一種利用重復(fù)序列構(gòu)成的訓(xùn)練序列進(jìn)行OFDM頻率同步的新方法。它通過(guò)作兩次頻率同步，先是相隔較近的數(shù)據(jù)作相關(guān)，得出頻率偏移值，糾正此頻率偏移后，再間隔較遠(yuǎn)的數(shù)據(jù)作相關(guān)，得出較精確的頻率偏移值。新方法有估計(jì)范圍大和精度高的雙重優(yōu)點(diǎn)。AWGN和Rayleigh信道下的仿真驗(yàn)證了算法的有效性。
    Abstract: In this paper a new frequency offset estimation method using repeated sequences is introduced where two steps are involved. In the first step the span of the correlation data is small and a larger estimation range can be achieved. After the frequency offset is compensated, a larger correlation data span is chosen and a precise estimation can be got. Large estimation range and precise estimation can be acquired in the new method. Simulations in AWGN channel and Rayleigh channel verify the validity of the new algorithm.
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  • Bingham J A C. Multicarrier modulation for data transmission: an ideawhose time has come [J].IEEE Commun Mag.1990, 28(5):5-14[2]ETS 300 401 Second Edition, Radio broadcasting systems;Digital[3]Audio Broadcasting (DAB) to mobile, portable and fixedreceivers[4][S], 1997.[5]Reimers U. DVB-T: the COFDM-based system for terrestrial television [J].Electronics Communication Engineerig Journal.1997, 9(1):28-32[6]Khun-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., Amsterdam, The Netherlands, 1999, vol. 5: 2667-2671.[7]Moose P H. A technique for orthogonal frequency division multiplexing frequency offset correction [J].IEEE Trans. on Communications.1994, 42(10):2908-2914[8]Schmidl T M, Cox D C. Robust frequency and timing synchronization for OFDM[J].IEEE Trans. on Commun.1997, 45(12):1613-1621[9]Van 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[10]Tufvesson 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.[11]Chen Biao. Maximum likelihood estimation of OFDM carrier frequency offset [J].IEEE Signal Processing Letters.2002, 9(4):123-126[12]Tureli U. Kivanc D, Liu HExperimental and analytical studies on a high resolution OFDM carrier frequency estimator [J].. IEEE Trans. on Vehicular Technology.2001, 50(2):629-[13]Tureli U, Hui Liu, Zoltowski M D. OFDM blind carrier estimation: ESPRIT [J].IEEE Trans. on Communications.2000, 48(9):1459-1461[14]Lashkarian N, Kiaei S. Class of cyclic-based estimators for frequency-offset estimation of OFDM systems[J]., IEEE Trans. on Communications.2000, 48(12):2139-2149[15]朱光喜, 張青春, 蔡瑋. 一種衰落信道下的OFDM載頻同步跟蹤算法. 華中科技大學(xué)學(xué)報(bào), 2004, 32(1): 56-59.[16]Recommendation ITU R M.1225, Guideline for evaluation of radio transmission technologies for IMT 2000, 1997.
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出版歷程
  • 收稿日期:  2004-04-28
  • 修回日期:  2004-11-03
  • 刊出日期:  2005-10-19

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