Joint optimization for secure ambient backscatter communication in NOMA-enabled IoT networks

Wali Ullah Khan*, Furqan Jameel, Asim Ihsan, Omer Waqar, Manzoor Ahmed

*Tämän työn vastaava kirjoittaja

    Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

    8 Sitaatiot (Scopus)
    22 Lataukset (Pure)

    Abstrakti

    Non-Orthogonal Multiple Access (NOMA) has emerged as a novel air interface technology for massive connectivity in sixth-generation (6G) era. The recent integration of NOMA in Backscatter Communication (BC) has triggered significant research interest due to its applications in low-powered Internet of Things (IoT) networks. However, the link security aspect of these networks has not been well investigated. This article provides a new optimization framework for improving the physical layer security of the NOMA ambient BC system. Our system model takes into account the simultaneous operation of NOMA IoT users and the Backscatter Node (BN) in the presence of multiple EavesDroppers (EDs). The EDs in the surrounding area can overhear the communication of Base Station (BS) and BN due to the wireless broadcast transmission. Thus, the chief aim is to enhance link security by optimizing the BN reflection coefficient and BS transmit power. To gauge the performance of the proposed scheme, we also present the suboptimal NOMA and conventional orthogonal multiple access as benchmark schemes. Monte Carlo simulation results demonstrate the superiority of the NOMA BC scheme over the pure NOMA scheme without the BC and conventional orthogonal multiple access schemes in terms of system secrecy rate.

    AlkuperäiskieliEnglanti
    Sivut264-269
    Sivumäärä6
    JulkaisuDigital Communications and Networks
    Vuosikerta9
    Numero1
    Varhainen verkossa julkaisun päivämäärä2022
    DOI - pysyväislinkit
    TilaJulkaistu - helmik. 2023
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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