Latency of uplink non-orthogonal multiple access grant-free transmission with multiuser detection in base station

Show Shiono, Yukitoshi Sanada, Ryota Kimura, Hiroki Matsuda, Ryo Sawai

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

    Abstract

    In this paper, the latency of non-orthogonal multiple access (NOMA) grant-free (GF) transmission in uplink is evaluated by link and system level simulations. In order to cancel interference among NOMA signals, multiuser detection (MUD) consisting of minimum mean square error demodulation followed by successive interference cancellation is applied. Retransmission happens only when a packet error occurs after serial interference cancellation (SIC). Therefore, the latency is reduced as compared to GF transmission without MUD. Numerical results obtained through system level simulation show that the application of MUD in uplink GF transmission improves the latency and increases the successful transmission rate without retransmission by a factor of about 3.0.

    Original languageEnglish
    Title of host publication2019 IEEE 90th Vehicular Technology Conference, VTC 2019 Fall - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781728112206
    DOIs
    Publication statusPublished - 2019 Sep
    Event90th IEEE Vehicular Technology Conference, VTC 2019 Fall - Honolulu, United States
    Duration: 2019 Sep 222019 Sep 25

    Publication series

    NameIEEE Vehicular Technology Conference
    Volume2019-September
    ISSN (Print)1550-2252

    Conference

    Conference90th IEEE Vehicular Technology Conference, VTC 2019 Fall
    CountryUnited States
    CityHonolulu
    Period19/9/2219/9/25

    ASJC Scopus subject areas

    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Applied Mathematics

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  • Cite this

    Shiono, S., Sanada, Y., Kimura, R., Matsuda, H., & Sawai, R. (2019). Latency of uplink non-orthogonal multiple access grant-free transmission with multiuser detection in base station. In 2019 IEEE 90th Vehicular Technology Conference, VTC 2019 Fall - Proceedings [8891232] (IEEE Vehicular Technology Conference; Vol. 2019-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCFall.2019.8891232