This work presents non-orthogonal multiple access (NOMA) enabled energy-efficient alternating optimization framework for backscatter aided wireless powered uplink sensors communications for beyond 5G intelligent transportation system (ITS). Specifically, the transmit power of carrier emitter (CE) and reflection coefficients of backscatter aided roadside sensors are optimized with channel uncertainties for the maximization of the energy efficiency (EE) of the network. The formulated problem is tackled by the proposed two-stage alternating optimization algorithm named AOBWS (alternating optimization for backscatter aided wireless powered sensors). In the first stage, AOBWS employs an iterative algorithm to obtain optimal CE transmit power through simplified closed-form computed through Cardano’s formulae. In the second stage, AOBWS uses a non-iterative algorithm that provides a closed-form expression for the computation of optimal reflection coefficient for roadside sensors under their quality of service (QoS) and a circuit power constraint. The global optimal exhaustive search (ES) algorithm is used as a benchmark. Simulation results demonstrate that the AOBWS algorithm can achieve near-optimal performance with very low complexity, which makes it suitable for practical implementations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Energy-Efficient Backscatter Aided Uplink NOMA Roadside Sensor Communications Under Channel Estimation Errors


    Beteiligte:
    Ihsan, Asim (Autor:in) / Chen, Wen (Autor:in) / Khan, Wali Ullah (Autor:in) / Wu, Qingqing (Autor:in) / Wang, Kunlun (Autor:in)


    Erscheinungsdatum :

    01.05.2023


    Format / Umfang :

    1957151 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Backscatter-Aided NOMA V2X Communication under Channel Estimation Errors

    Khan, Wali Ullah / Jamshed, Muhammad Ali / Mahmood, Asad et al. | IEEE | 2022


    Performance Analysis of Ambient Backscatter Uplink NOMA Networks

    Chrysologou, Athanasios P. / Chatzidiamantis, Nestor D. / Boulogeorgos, Alexandros-Apostolos A. et al. | IEEE | 2023


    Energy Efficient Transmission Design for NOMA Backscatter-Aided UAV Networks with Imperfect CSI

    Saad AlJubayrin / Fahd N. Al-Wesabi / Hadeel Alsolai et al. | DOAJ | 2022

    Freier Zugriff

    Energy Efficiency Optimization for Backscatter Enhanced NOMA Cooperative V2X Communications Under Imperfect CSI

    Khan, Wali Ullah / Jamshed, Muhammad Ali / Lagunas, Eva et al. | IEEE | 2023


    Emission-aware Resource Optimization Framework for Backscatter-enabled Uplink NOMA Networks

    Jamshed, Muhammad Ali / Khan, Wali Ullah / Pervaiz, Haris et al. | IEEE | 2022