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Publication - Professor Mark Beach

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

    Citation

    Kalokidou, V, Yuan, W, Doufexi, A, Armour, S & Beach, M, 2018, ‘Application of Non-Orthogonal Multiplexing to mmWave Multi-User Systems’. in: 2017 IEEE 85th Vehicular Technology Conference (VTC Spring): Proceedings of a meeting held 4-7 June 2017, Sydney, Australia.. Institute of Electrical and Electronics Engineers (IEEE), pp. 2649-2654

    Abstract

    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 NonOrthogonal
    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 푆푁푅 > 5푑퐵, without
    degrading the overall spectral efficiency in the cell.

    Full details in the University publications repository