Low complexity metric for joint MLD in overloaded MIMO system

Takayoshi Aoki, Yukitoshi Sanada

    研究成果: Conference contribution

    1 引用 (Scopus)

    抜粋

    This paper presents a low complexity metric for joint maximum-likelihood detection (MLD) in overloaded multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems. In overloaded MIMO systems, a nonlinear detection scheme such as MLD combined with error correction coding achieves superior performance than that of a single signal stream with higher order modulation. However, MLD demands large computational complexity because of multiplications in the selection of candidate signal points. Thus, a Manhattan metric has been used to reduce the complexity. Nevertheless, it is not accurate and causes performance degradation in overloaded MIMO systems. Thus, this paper proposes a new metric that is calculated with summations and bit shifts. New numerical results obtained through computer simulation show that the proposed metric improves bit error rate (BER) performance more than 0.2dB at the BER of 10-4 in comparison with a Manhattan metric.

    元の言語English
    ホスト出版物のタイトル2015 IEEE 82nd Vehicular Technology Conference, VTC Fall 2015 - Proceedings
    出版者Institute of Electrical and Electronics Engineers Inc.
    ISBN(印刷物)9781479980918
    DOI
    出版物ステータスPublished - 2016 1 25
    イベント82nd IEEE Vehicular Technology Conference, VTC Fall 2015 - Boston, United States
    継続期間: 2015 9 62015 9 9

    Other

    Other82nd IEEE Vehicular Technology Conference, VTC Fall 2015
    United States
    Boston
    期間15/9/615/9/9

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Automotive Engineering
    • Hardware and Architecture

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  • これを引用

    Aoki, T., & Sanada, Y. (2016). Low complexity metric for joint MLD in overloaded MIMO system. : 2015 IEEE 82nd Vehicular Technology Conference, VTC Fall 2015 - Proceedings [7391012] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCFall.2015.7391012