Non-orthogonal multiple access schemes with higher spectral efficiency and the capability of accessing more users than orthogonal multiple access (OMA) scheme is preferred for the fifth generation (5G) wireless networks. In this work, a non-orthogonal transmission scheme called pattern division multiple access (PDMA) is proposed for the 5G wireless communication systems. Two pattern matrices are proposed for 150% and 200% overloaded PDMA systems. Then, a low complexity symbolwise belief propagation iterative detection and decoding (BPIDD) algorithm for multiple user detection is proposed. Numerical results and analysis provided by utilizing extrinsic information transfer chart show that the proposed scheme outperforms the traditional OMA systems significantly, and the performance of the proposed scheme is better than that of the existing schemes up to 1 dB. Finally, simulation results show that the proposed scheme is superior to the existing schemes and the proposed BPIDD algorithm is better than that of the BP algorithm over 0.5 dB.


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    Titel :

    A Pattern Division Multiple Access Scheme with Low Complexity Iterative Receiver for 5G Wireless Communication Systems


    Beteiligte:
    Zhang, Kai (Autor:in) / Xu, Jin (Autor:in) / Yin, Changchuan (Autor:in) / Pan, Chunyu (Autor:in) / Tan, Weiqiang (Autor:in) / Xu, Guixian (Autor:in)


    Erscheinungsdatum :

    01.08.2018


    Format / Umfang :

    1078946 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch