Performance of overloaded MIMO-OFDM system with repetition code

Hikari Matsuoka, Yoshihito Doi, Tatsuro Yabe, Yukitoshi Sanada

    研究成果: Conference contribution

    3 被引用数 (Scopus)

    抄録

    This paper investigates the performance of an overloaded multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system with a repetition code. It has been demonstrated that diversity with block coding prevents the performance degradation induced by signal multiplexing. However, the computational complexity of a joint decoding scheme increases exponentially with the number of multiplexed signal streams. Thus, this paper proposes the use of a repetition code in the overloaded MIMO-OFDM system. In addition, QR decomposition with M-algorithm (QRM) maximum likelihood decoding (MLD) is applied to the decoding of the repetition code. QRM-MLD significantly reduces the amount of joint decoding complexity. In addition, virtual antennas are employed in order to increase the throughput that is reduced by the repetition code. It is shown that the proposed scheme reduces the complexity by about 1/48 for 6 signal streams with QPSK modulation while the BER degradation is less than 0.ldB at the BER of 10-3.

    本文言語English
    ホスト出版物のタイトル2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ239-244
    ページ数6
    ISBN(印刷版)9781479961207
    DOI
    出版ステータスPublished - 2014 1 27
    イベント2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014 - Kuching, Sarawak, Malaysia
    継続期間: 2014 12 12014 12 4

    Other

    Other2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
    国/地域Malaysia
    CityKuching, Sarawak
    Period14/12/114/12/4

    ASJC Scopus subject areas

    • 人工知能
    • コンピュータ ネットワークおよび通信
    • 信号処理

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