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

Yuka Enjoji, Yukitoshi Sanada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    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.

    Original languageEnglish
    Title of host publication2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages441-446
    Number of pages6
    ISBN (Print)9781467364997
    DOIs
    Publication statusPublished - 2016 Mar 11
    EventInternational Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015 - Nusa Dua, Bali, Indonesia
    Duration: 2015 Nov 92015 Nov 12

    Other

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

    ASJC Scopus subject areas

    • Artificial Intelligence
    • Computer Networks and Communications
    • Signal Processing

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  • Cite this

    Enjoji, Y., & Sanada, Y. (2016). Cyclic delay diversity with phase shift in low rate SC-FDMA uplink. In 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015 (pp. 441-446). [7432812] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISPACS.2015.7432812