Performance of turbo codes in overloaded MIMO-OFDM systems using joint decoding

Ilmiawan Shubhi, Yukitoshi Sanada

    研究成果: Conference contribution

    3 被引用数 (Scopus)

    抄録

    In order to support high data rate communications, the third generation partnershIP project (3GPP) long term evolution (LTE) implements multIPle-input multIPle-output (MIMO) systems. In addition, to achieve excellent performance, LTE also employs turbo codes as the forward error correcting (FEC) standard. Although conventional turbo codes give satisfactory performance in the ideal MIMO, significant performance degradation occurs in an overloaded MIMO system when the number of transmit antennas is larger than the number of receive antennas. This paper proposes a joint decoding scheme for turbo codes in overloaded MIMO-OFDM systems. In joint turbo decoding, the calculations of soft information are based on the bit combinations from all of streams. In addition, a super-trellis diagram is used to combine the trellis diagrams. Numerical results obtained through computer simulation show that the proposed scheme achieves better performance by 2.0dB for 4 transmit antennas and 2 receive antennas in the BER of 10-5. The proposed scheme also achieves throughput improvement with the ratio close to the theoretical overloaded MIMO capacity.

    本文言語English
    ホスト出版物のタイトルIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ386-390
    ページ数5
    2015-June
    ISBN(印刷版)9781479949120
    DOI
    出版ステータスPublished - 2015 6 25
    イベント2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014 - Washington, United States
    継続期間: 2014 9 22014 9 5

    Other

    Other2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
    国/地域United States
    CityWashington
    Period14/9/214/9/5

    ASJC Scopus subject areas

    • 電子工学および電気工学

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