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A Robust SFO Estimation Scheme for OFDM-Based DRM with Non-Symmetric Distributed Pilots

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Abstract

This paper proposes a robust sampling frequency offset (SFO) estimation scheme in an orthogonal frequency division multiplexing based digital radio mondiale system with non-symmetrically distributed pilots. In particular, a post fast Fourier transform SFO estimation method is suggested to provide an unbiased estimate of SFO in the presence of frequency selectivity of the channel as well as non-symmetrically distribution of pilot symbols. In order to verify the performance of the proposed frequency-offset estimation scheme, a closed-form expression for the mean square error (MSE) is derived. We show via simulations that the proposed estimation scheme achieves a remarkable robustness against frequency selectivity fading and the theoretical MSE analysis is proven accurate.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(NRF-2014R1A1A2057122).

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Authors and Affiliations

  1. Department of Computer Engineering, Sejong University, Seoul, 143-747, Korea

    Yong-An Jung & Young-Hwan You

  2. School of Electrical, Electronics & Communication, KOREATECH, Cheonan, Korea

    Sung-Jin Kang

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  1. Yong-An Jung
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  2. Sung-Jin Kang
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Correspondence to Young-Hwan You.

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Jung, YA., Kang, SJ. & You, YH. A Robust SFO Estimation Scheme for OFDM-Based DRM with Non-Symmetric Distributed Pilots. Wireless Pers Commun 88, 749–760 (2016). https://doi.org/10.1007/s11277-016-3199-7

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  • DOI: https://doi.org/10.1007/s11277-016-3199-7

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