The compressive sensing-based random access may get impacted largely by other cell interference (OCI), which may shatter the sparsity of the received signal model unless the signature space assignment among interfering cells is carefully handled. In this paper, we investigate the performance of multi-sequence spreading-based random access (MSRA) scheme under multi-cell environment. In particular, a grant-free random access scenario is considered to indicate its particular attributes that fundamentally affect the cellular performance. We also give the performance of MSRA in comparison with sparse code multiple access (SCMA). We show that if a proper signature assignment is undertaken, the OCI in MSRA and other CS-based schemes can be modeled as a dispersed noise which does not critically undermine the underlying sparsity.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Multi-Cell Performance of Grant-Free and Non-Orthogonal Multiple Access


    Beteiligte:
    Abebe, Ameha T. (Autor:in) / Lee, Joonsung (Autor:in) / Rim, Minjoog (Autor:in) / Kang, Chung G. (Autor:in)


    Erscheinungsdatum :

    01.06.2017


    Format / Umfang :

    764363 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Non-Orthogonal Multiple Access in Multi-UAV Networks

    Hou, Tianwei / Liu, Yuanwei / Sun, Xin et al. | IEEE | 2019



    An Asynchronous Grant-Free Multiple Access Scheme with Rateless Codes for URLLC

    Zhang, Wei / Zhou, Shidong / Zhang, Xiujun | IEEE | 2020