The contention-based (CB) transmission is a promising solution for small data packets transmission in 5G uplink. In this paper, a Non-Orthogonal Coded Access (NOCA) scheme, called ZC-NOCA, is proposed for CB transmission in 5G uplink. For ZC-NOCA, the codes generated by Zadoff-Chu (ZC) sequences is used to spread the data bit over the Orthogonal Frequency Division Multiple (OFDM) symbols. Different with LTE, where ZC sequences keep inter-cell orthogonal, ZC-NOCA use both non-orthogonal and orthogonal sequences for spreading. A CB transmission channel design with ZC-NOCA for 5G uplink is presented, to combine the advantages of both orthogonal and non-orthogonal schemes. The link level performance of ZC-NOCA is investigated by using two types of multi user detection (MUD) receiver considering the user detection performed by preamble or directly by the spreading codes. The study show ZC-NOCA allow a large number of user overloading and enable massive connections employed with CB transmission. Compare to orthogonal code access scheme, with larger code book length ZC-NOCA enables to support more than 10x user connections with acceptable link performance loss in CB transmission.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Uplink Contention Based Transmission with Non-Orthogonal Spreading


    Beteiligte:
    Zhao, Zhuyan (Autor:in) / Miao, Deshan (Autor:in) / Zhang, YuanTao (Autor:in) / Sun, JingYuan (Autor:in) / Li, HongChao (Autor:in) / Pedersen, Klaus (Autor:in)


    Erscheinungsdatum :

    01.09.2016


    Format / Umfang :

    816545 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Contention Based Uplink Transmission with NOMA for Latency Reduction

    Li, Anxin / Chen, Xiaohang / Jiang, Huiling | IEEE | 2017


    Non-Orthogonal Coded Access for Contention-Based Transmission in 5G

    Wang, Qing / Zhao, Zhuyan / Miao, Deshan et al. | IEEE | 2017


    Frequency and Time Spreading for Uplink URLLC Transmission

    Tsai, Shang-Ho Lawrence / Lai, Chia-Hsin / Li, Xiu-Sheng | IEEE | 2020


    Uplink Contention Based Multiple Access for 5G Cellular IoT

    Lin, Debby / Charbit, Gilles / Fu, I-Kang | IEEE | 2015