Cyclic delay diversity with phase shift in low rate SC-FDMA uplink

Yuka Enjoji, Yukitoshi Sanada

    研究成果: Conference contribution

    抄録

    This paper proposes a phase shift scheme in cyclic delay diversity (CDD) for single-carrier frequency division multiple access (SC-FDMA) in Internet of Things (IoT) applications. The proposed scheme is assumed to be applied to the uplink of Long Term Evolution (LTE) systems. Since the transmission rates of IoT applications are small, each uplink connection may occupy less than 12 subcarriers that corresponds to one resource block (RB) of the LTE. Since the length of the data sequence in time domain is short so that CDD may provide limited frequency diversity. The proposed scheme shifts the phases of the data symbols in time domain and spreads each subcarrier component over multiple subcarriers. Thus, more diversity gain can be realized with CDD. Numerical results obtained through computer simulation shows that the proposed scheme improves the performance by about 5-7 dB at the bit error rate (BER) of 104 for the data sequence length of 4.

    本文言語English
    ホスト出版物のタイトル2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ441-446
    ページ数6
    ISBN(印刷版)9781467364997
    DOI
    出版ステータスPublished - 2016 3 11
    イベントInternational Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015 - Nusa Dua, Bali, Indonesia
    継続期間: 2015 11 92015 11 12

    Other

    OtherInternational Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015
    国/地域Indonesia
    CityNusa Dua, Bali
    Period15/11/915/11/12

    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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