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Physical layer security for cooperative NOMA networks via Nakagami-m fading channels

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  • Wided Hadj Alouane

    (University of Carthage)

Abstract

In this paper, we investigate the physical layer security in cooperative non-orthogonal multiple access (NOMA) networks over Nakagami-m fading channels. Both amplify-and-forward (AF) and decode-and-forward (DF) protocols are studied. More particularly, closed-form exact and asymptotic expressions for strictly positive secrecy capacity are provided considering NOMA-AF and NOMA-DF relaying systems. Numerical results are presented to justify the accuracy of the obtained theoretical analysis. These results show that NOMA-AF and NOMA-DF relaying networks have a similar secrecy performance. Furthermore, asymptotic results show that the strictly positive secrecy capacity goes to a constant for high signal-to-noise ratio regimes. Finally, our proposed NOMA systems provide a high secrecy performance especially for a great value of Nakagami-m parameter.

Suggested Citation

  • Wided Hadj Alouane, 2021. "Physical layer security for cooperative NOMA networks via Nakagami-m fading channels," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 78(4), pages 531-538, December.
    • Handle: RePEc:spr:telsys:v:78:y:2021:i:4:d:10.1007_s11235-021-00823-9
    DOI: 10.1007/s11235-021-00823-9
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