Codeword metric calculation scheme for outer code in overloaded MIMO-OFDM system

Yoshihito Doi, Yukitoshi Sanada

    研究成果: Conference contribution

    抄録

    This paper presents a codeword metric calculation scheme in two step joint decoding of block coded signals in an overloaded multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. In the previous literature, the two step joint decoding scheme has been proposed for the complexity reduction of joint maximum likelihood decoding in the overloaded MIMO system. However, the two step decoding scheme has not been combined with an outer code. The selection of the candidate codewords in the inner block code may not always be able to provide the metric of a binary coded symbol for the outer code. The metric of the binary coded symbol calculated in the first stage is used in the proposed scheme. It is shown that the proposed two step decoding scheme shows better performance than a bit flipping based scheme and reduces the complexity by about 0.013 for 4 signal streams with the cost of bit error rate degradation within 0.5dB.

    本文言語English
    ホスト出版物のタイトルIEEE Vehicular Technology Conference
    出版社Institute of Electrical and Electronics Engineers Inc.
    2015-July
    ISBN(印刷版)9781479980888
    DOI
    出版ステータスPublished - 2015 7 1
    イベント81st IEEE Vehicular Technology Conference, VTC Spring 2015 - Glasgow, United Kingdom
    継続期間: 2015 5 112015 5 14

    Other

    Other81st IEEE Vehicular Technology Conference, VTC Spring 2015
    国/地域United Kingdom
    CityGlasgow
    Period15/5/1115/5/14

    ASJC Scopus subject areas

    • 電子工学および電気工学
    • コンピュータ サイエンスの応用
    • 応用数学

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