Smart Sorting in Massive MIMO Detection

Andrey Ivanov, Dmitry Yarotsky, Maria Stoliarenko, Alexey Frolov

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

    12 Citations (Scopus)

    Abstract

    In this paper, we proposed a discrete sorting optimization approach for uplink channel of Massive Multiple Input, Multiple Output (MIMO) system. The algorithm includes users (UEs) sorting before QR decomposition (QRD) and sorting-reduced (SR) K-best detector for 48x64 MIMO uncoded systems. Simulation results show that detector losses is about 1dB to a Maximum Likelihood (ML) detection in low detector complexity.The UEs sorting is required to sort diagonal elements of the R matrix in ascending order to avoid error propagation in multi-user (MU) scenario. Fast and low complexity method of online discrete optimization is used to find the loss function minimum. Sorting tracking is proposed, so that the pre-sorted interpolated R matrix is used for further sorting optimization, resulting in low sorting complexity. The proposed sorting demonstrates huge performance gain compare to a common power-based one. Simulation results in 5G QuaDRiGa channel are presented.SR-K-best detector is a variant of K-best detector. The SR-K-best with (K,S,p) parameters results in significant losses in scenarios with high correlated users, therefore we proposed a new structure (K,S,p,v,q) of the SR-K-best algorithm and a new discrete optimization method to increase performance. Discrete stochastic optimization was done offline in QuaDRiGa channel to find optimal (K,S,p,v,q) parameters for fixed detector structure.

    Original languageEnglish
    Title of host publication2018 14th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2018
    PublisherIEEE Computer Society
    ISBN (Electronic)9781538668764
    DOIs
    Publication statusPublished - 26 Dec 2018
    Event14th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2018 - Limassol, Cyprus
    Duration: 15 Oct 201817 Oct 2018

    Publication series

    NameInternational Conference on Wireless and Mobile Computing, Networking and Communications
    Volume2018-October
    ISSN (Print)2161-9646
    ISSN (Electronic)2161-9654

    Conference

    Conference14th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2018
    Country/TerritoryCyprus
    CityLimassol
    Period15/10/1817/10/18

    Fingerprint

    Dive into the research topics of 'Smart Sorting in Massive MIMO Detection'. Together they form a unique fingerprint.

    Cite this