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Correlation Reduction Precoding for Joint Decoding in Overloaded MIMO-OFDM System on Rician Channel

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Abstract

This paper presents a correlation reduction precoding scheme for joint decoding in an overloaded multiple input multiple output (MIMO)-orthogonal frequency division multiplexing system. In the overloaded MIMO system, the number of receive antenna elements is less than that of transmit antenna elements. Through joint maximum likelihood (ML) decoding a frequency diversity suppresses the BER degradation owing to the spatial multiplexing of signal streams. On a Rician channel, the correlation among coded symbols deteriorates the performance of the joint ML decoding. Thus, this paper proposes the precoding scheme that reduces the correlation on the Rician channel. Numerical results obtained through computer simulation show that the proposed scheme improves the BER by a factor of 1/10 on the Rician channel with a Rician factor of 10.

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Acknowledgements

This work is supported in part by Ministry of Internal Affairs and Communications in Japan under the project name of Strategic Information and Communications R&D Promotion Programme (SCOPE 141303004).

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Authors and Affiliations

  1. Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama, Kanagawa, 223-8522, Japan

    Tatsuro Yabe & Yukitoshi Sanada

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  1. Tatsuro Yabe
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  2. Yukitoshi Sanada
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Correspondence to Yukitoshi Sanada.

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Yabe, T., Sanada, Y. Correlation Reduction Precoding for Joint Decoding in Overloaded MIMO-OFDM System on Rician Channel. Wireless Pers Commun 96, 3785–3798 (2017). https://doi.org/10.1007/s11277-017-4202-7

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  • DOI: https://doi.org/10.1007/s11277-017-4202-7

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