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

Wided Hadj Alouane ()
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Wided Hadj Alouane: University of Carthage

Telecommunication Systems: Modelling, Analysis, Design and Management, 2021, vol. 78, issue 4, No 3, 538 pages

Abstract: 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.

Keywords: Non-orthogonal multiple access (NOMA); Nakagami-m fading channel; Amplify-and-forward; Decode-and-forward; Strictly positive secrecy capacity (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11235-021-00823-9

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