A polar code based unsourced random access for the gaussian MAC

Evgeny Marshakov, Gleb Balitskiy, Kirill Andreev, Alexey Frolov

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    38 Citations (Scopus)

    Abstract

    Massive machine-type communications (mMTC) is one of the key application scenarios for future 5G networks. In the literature, this problem is known as unsourced random access. We propose a polar code based scheme for the unsourced random access Gaussian channel. This scheme is based on T-fold irregular repetition slotted ALOHA (IRSA). We use polar codes as slot codes and investigate their practical performance in T-user MAC. We compare two possible decoding techniques: joint successive cancellation algorithm and joint iterative algorithm. In order to optimize the codes (choose frozen bits), we propose a specialized and efficient design algorithm. Finally, we investigate the performance of the resulting scheme by means of simulations and conclude that replacing of LDPC codes with polar codes in IRSA scheme leads to a significant performance gain.

    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 - Sep 2019
    Event90th IEEE Vehicular Technology Conference, VTC 2019 Fall - Honolulu, United States
    Duration: 22 Sep 201925 Sep 2019

    Publication series

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

    Conference

    Conference90th IEEE Vehicular Technology Conference, VTC 2019 Fall
    Country/TerritoryUnited States
    CityHonolulu
    Period22/09/1925/09/19

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