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Blind Estimation for OFDM Fractional Frequency Offset Over Multipath Channels

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Abstract

To solve the problem of low estimation accuracy for orthogonal frequency division multiplexing (OFDM) fractional frequency offset (FFO) over multipath channels in non-cooperation communication system, a novel blind estimation of OFDM FFO is conceived. The starting position of data sampling points without inter-symbol interference is estimated in the cyclic prefix, and then the frequency offset is estimated by adopting the maximum likelihood criterion. The simulation results demonstrate that the proposed method has better performance than traditional methods, so it is applicable to the noncooperation communication systems.

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Acknowledgments

This research was supported by the National Natural Science Foundation of China under Grant No. 61271299, the National High Technology Research and Development Program of China under Grant No. 2007AA01Z288 and the 111 Project under Grant No. B08038.

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Authors and Affiliations

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an , 71007, China

    Mingqian Liu, Bingbing Li & Jianhua Ge

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  1. Mingqian Liu
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  2. Bingbing Li
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  3. Jianhua Ge
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Correspondence to Mingqian Liu.

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Liu, M., Li, B. & Ge, J. Blind Estimation for OFDM Fractional Frequency Offset Over Multipath Channels. Wireless Pers Commun 79, 119–130 (2014). https://doi.org/10.1007/s11277-014-1845-5

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  • DOI: https://doi.org/10.1007/s11277-014-1845-5

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