Due to the massive data traffic in wireless networks, energy consumption has become a crucial concern, especially with the limited power supply of the mobile terminals and the increasing $CO_2$ emission of the cellular industry. In this context, we study the energy efficiency (EE) of MIMO spectrum sharing cognitive radio (CR) systems under power and interference constraints. We present an energy-efficient power allocation framework based on maximizing the average EE per parallel channel resulting from the singular value decomposition (SVD) eigenmode transmission. We also present a sub-optimal low-complexity power allocation scheme based on the water-filling power allocation. In the numerical results, we show that the sub-optimal power allocation achieves at least $95\%$ of the optimal performance. In addition, we show that adopting more antennas is more energy efficient for a given power budget. Finally, we show that the interference threshold has a significant effect on both the EE and the spectral efficiency at high-power regime.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Energy-Efficient Power Allocation for Cognitive MIMO Channels


    Beteiligte:
    Sboui, Lokman (Autor:in) / Rezki, Zouheir (Autor:in) / Sultan, Ahmed (Autor:in) / Alouini, Mohamed-Slim (Autor:in)


    Erscheinungsdatum :

    01.09.2016


    Format / Umfang :

    194156 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Energy Efficient Resource Allocation for MIMO SWIPT Broadcast Channels

    Tang, Jie / So, Daniel K. C. / Shojaeifard, Arman et al. | IEEE | 2017


    Efficient Power Allocation in Coded MIMO Systems

    Wu, Haochen / Ma, Ke / Ming, Yang et al. | IEEE | 2023


    Energy-Efficient Power Allocation for UAV Cognitive Radio Systems

    Sboui, Lokman / Ghazzai, Hakim / Rezki, Zouheir et al. | IEEE | 2017


    Improving MIMO Secrecy Rate through Efficient Power Allocation

    Jyothsna, S / Theagarajan, Lakshmi N. | IEEE | 2022


    Cognitive Conformal Subaperturing FDA-MIMO Radar for Power Allocation Strategy

    Ding, Zihang / Xie, Junwei / Yang, Liyun | IEEE | 2023