The recent concept of beamspace multiple-input multiple-output (MIMO) is capable of significantly reducing the number of radio-frequency (RF) chains required by millimeter-wave (mmWave) massive MIMO systems. However, the fundamental limit of the existing beamspace MIMO is that, the number of supported users cannot be higher than the number of RF chains using the same time-frequency resources. To break this limit, beamspace MIMO is integrated with non-orthogonal multiple access (NOMA) in the proposed MIMO-NOMA system in this paper, where the number of supported users can be higher than the number of RF chains. To reduce the inter-beam interference, a transmit precoding (TPC) scheme based on the principle of zero-forcing (ZF) is designed. Furthermore, a dynamic power allocation scheme is proposed for maximizing the achievable sum rate. Moreover, a low-complexity iterative optimization algorithm is conceived for dynamic power allocation. Simulation results show that the proposed beamspace MIMO-NOMA achieves a higher spectrum and energy efficiency than the existing beamspace MIMO for mmWave communications.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Beamspace MIMO-NOMA for Millimeter-Wave Communications Using Lens Antenna Arrays


    Beteiligte:
    Wang, Bichai (Autor:in) / Dai, Linglong (Autor:in) / Gao, Xiqi (Autor:in) / Hanzo, Lajos (Autor:in)


    Erscheinungsdatum :

    01.09.2017


    Format / Umfang :

    163458 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    IRS-Assisted Beamspace Millimeter-wave Massive MIMO with Interference-Aware Beam Selection

    Elganimi, Taissir Y. / Elmajdub, Retaj I. / Nauryzbayev, Galymzhan et al. | IEEE | 2022


    On the Power Leakage Problem in Beamspace MIMO Systems with Lens Antenna Array

    Xie, Tian / Dai, Linglong / Gao, Xinyu et al. | IEEE | 2017


    Millimeter-Wave MIMO-NOMA Antenna Selection Algorithms for Space Information Network

    Chen, Zeqiong / Jiao, Jian / Li, Qiwen et al. | IEEE | 2020