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Iterative Joint Channel Estimation and Signal Detection for OFDM System in Double Selective Channels

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Abstract

Intercarrier interference caused by fast time-varying multipath fading channels degrades the system performance of high-mobility orthogonal frequency division multiplexing systems. This study considers the challenging problem of joint channel estimation and signal detection in high mobility environments. The estimation method is based on a pilot-aided linear approximation channel modeling and iterative process. After each iteration, the channel estimates are refined with the fed-back detection signal. The channel is re-estimated iteratively, detected increasingly reliable signals. The proposed method is independent of the Doppler-spectrum, delay-profile shape and the number of paths. Numerical simulation results indicate that the proposed method is highly robust to fast time-varying multipath fading channels.

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Acknowledgements

The author would like to thank the Ministry of Science and Technology of the Republic of China, Taiwan, for financially supporting the research under Contract No. MOST 103-2218-E-539-001.

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Authors and Affiliations

  1. Department of Digital Living Innovation, Nan Kai University of Technology, No. 568, Zhongzheng Rd., Caotun Township, 54243, Nantou County, Taiwan, ROC

    Yih-Haw Jan

  2. Department of Mechanical Engineering, Nan Kai University of Technology, No. 568, Zhongzheng Rd., Caotun Township, 54243, Nantou County, Taiwan, ROC

    Yih-Haw Jan

  3. Department of Gerontic Technology and Service Management, Nan Kai University of Technology, No. 568, Zhongzheng Rd., Caotun Township, 54243, Nantou County, Taiwan, ROC

    Yih-Haw Jan

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Correspondence to Yih-Haw Jan.

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Jan, YH. Iterative Joint Channel Estimation and Signal Detection for OFDM System in Double Selective Channels. Wireless Pers Commun 99, 1279–1294 (2018). https://doi.org/10.1007/s11277-017-5184-1

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  • DOI: https://doi.org/10.1007/s11277-017-5184-1

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