Robust Single Carrier Frequency Domain Equalization with Imperfect Channel Knowledge

Y. Zhu, P. Zhe, H. Zhou, Defeng Huang

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    7 Citations (Web of Science)


    © 2002-2012 IEEE.
    Single carrier frequency domain equalization (SC-FDE) is an alternative technology to orthogonal frequency division multiplexing to deal with the frequency selective channel fading effect in broadband wireless communication systems. In this paper, we consider a robust SC-FDE design with imperfect channel knowledge at a receiver due to the channel estimation error. Based on a statistical model for channel estimation, the optimal equalization coefficients are derived under the criterion of minimizing the mean square error conditioned on a given channel estimate. The bit error rate is further analyzed and a tight performance approximation is proposed. We also propose two robust FDE schemes in coded systems, where feedback from the channel decoder is utilized to improve the equalization and/or channel estimation performance. Simulation results show that the proposed robust FDE schemes achieve significant performance improvement over the conventional FDE schemes.
    Original languageEnglish
    Pages (from-to)6091-6103
    JournalIEEE Transactions on Wireless Communications
    Issue number9
    Early online date8 Jun 2016
    Publication statusPublished - 8 Sep 2016


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