The fifth generation (5G) wireless network faces unprecedented massive concurrent random access requests in uplink (UL) contention-based (CB) transmission. In this paper, a non-orthogonal coded access (NOCA) UL transmission in combination with parallel interference cancellation (PIC) based reception scheme at base station is investigated. Non-orthonormal code generated by Zadoff-Chu (ZC) sequences is used to spread the data bits over orthogonal frequency division multiple (OFDM) symbols. It is shown through both link level and system level simulations that in dense urban scenario NOCA-PIC scheme is capable of working in highly overloaded system conditions. It can support more than 4 times concurrent random access number compared with OFDM based CB transmission.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Contributors:
    Wang, Qing (author) / Zhao, Zhuyan (author) / Miao, Deshan (author) / Zhang, Yuantao (author) / Sun, Jingyuan (author) / Liu, Ming (author) / Zhong, Zhangdui (author)


    Publication date :

    2017-09-01


    Size :

    333362 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Uplink Contention Based Transmission with Non-Orthogonal Spreading

    Zhao, Zhuyan / Miao, Deshan / Zhang, YuanTao et al. | IEEE | 2016




    Power Saving Mechanism for Contention-Based M2M Transmission

    Yang, Li / Wang, He / Luo, Zhe | IEEE | 2017


    Coded Orthogonal Frequency Division Multiplexing (COFDM) Transmission over Graded-Index Multimode Fiber

    Obayya, S. S. A. / Matarneh, Aser M. / Robertson, I. D. | IEEE | 2008