Limited wireless spectrum in future networks is an issue that millimeter-Wave (mmWave) frequencies can resolve. Beamforming is a challenging operation for mmWave systems. Both analogue and hybrid solutions have been proposed. Apart from Orthogonal Multiple Access (OMA) systems, the Non-Orthogonal Multiple Access (NOMA) scheme has been recently considered as an alternative and can outperform OMA in many cases. Our contribution is the application of NOMA to a hybrid precoder design in mmWave indoor scenarios with multiple users. Introducing to our system appropriate user grouping and scheduling schemes, we show that the NOMA outperforms, in terms of spectral efficiency, OMA by providing a 17.1% improvement for high SNR values. Finally, applying NOMA with fair power allocation improves the rate of users with weak channel conditions by around 1 bps/Hz for SNR>5dB, without degrading the overall spectral efficiency in the cell.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Application of Non-Orthogonal Multiplexing to mmWave Multi-User Systems


    Contributors:


    Publication date :

    2017-06-01


    Size :

    439849 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Non-Uniform Beam Design for Multi-User mmWave Systems

    Liu, Fuliang / Liu, Wendong / Wang, Zhaocheng | IEEE | 2019


    Non-Orthogonal Multiple Access Based on Hybrid Beamforming for mmWave Systems

    Almasi, Mojtaba Ahmadi / Mehrpouyan, Hani | IEEE | 2018


    Spectral Efficiency of Multi-User mmWave Systems with Uniform Linear Arrays and MRT

    Tan, Weiqiang / Smith, Peter J. / Suraweera, Himal A. et al. | IEEE | 2016



    Matrix Normalization Based ZF Hybrid Precoded Multi-User MIMO mmWave Systems with Massive Array

    Li, Hang / Wang, Thomas Q. / Huang, Xiaojing et al. | IEEE | 2018