Wireless Internet. 9th International Conference, WICON 2016, Haikou, China, December 19-20, 2016, Proceedings

Research Article

Downlink PDMA in the Heterogeneous Network

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  • @INPROCEEDINGS{10.1007/978-3-319-72998-5_26,
        author={Jie Zeng and Xiaofeng Lin and Liping Rong and Xin Su},
        title={Downlink PDMA in the Heterogeneous Network},
        proceedings={Wireless Internet. 9th International Conference, WICON 2016, Haikou, China, December 19-20, 2016, Proceedings},
        proceedings_a={WICON},
        year={2018},
        month={1},
        keywords={Heterogeneous network Non-orthogonal multiple access Pattern division multiple access Superposition},
        doi={10.1007/978-3-319-72998-5_26}
    }
    
  • Jie Zeng
    Xiaofeng Lin
    Liping Rong
    Xin Su
    Year: 2018
    Downlink PDMA in the Heterogeneous Network
    WICON
    Springer
    DOI: 10.1007/978-3-319-72998-5_26
Jie Zeng1,*, Xiaofeng Lin1, Liping Rong1, Xin Su1
  • 1: Tsinghua University
*Contact email: zengjie@tsinghua.edu.cn

Abstract

Non-orthogonal multiple access (NOMA) is considered as a promising multiple access technology, which could satisfy various incremental requirements of the coming fifth generation (5G) mobile communication system. As a novel NOMA scheme based on the joint design of the transmitter and receiver, pattern division multiple access (PDMA) could enhance spectrum efficiency significantly, compared to traditional orthogonal multiple access (OMA) schemes. In this paper, a particular pattern design of downlink PDMA in heterogeneous network is proposed. In overlapping deployment scenario of macro cells and small cells, the downlink signals are transmitted with a novel spatial and power domain superposition pattern. The user pairing and spatial/power allocation schemes are therefore proposed optimizing the pattern design. Analysis and simulation results illuminate the pattern design of downlink PDMA could enhance the spectrum efficiency obviously.