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IEEE World Forum on Internet of Things (WF-IoT)

Secure Wireless Powered Communications Under Fisher-Snedecor $\mathcal{F}$ Fading Channels

Farshad Rostami Ghadi, Masoud Kaveh, Zheng Yan, Riku Jäntti

Published Oct 12, 2023• 1 citation
Publisher

Abstract

This paper investigates the performance of wireless powered communication (WPC) systems from a physical layer security (PLS) viewpoint. With that aim, By considering the Fisher-Snedecor$\mathcal{F}$distribution as the underlying fading model for all channels, we derive closed-form expressions for the average secrecy capacity (ASC) and the secrecy outage probability (SOP). The derived expressions are formulated using the bivariate Fox's If-function, providing a mathematical framework to analyze the secrecy performance of WPC systems. The accuracy of the obtained analytical results is further validated by Monte-Carlo simulation, which provides valuable insights for the design and optimization of WPC systems under Fisher-Snedecor$\mathcal{F}$fading model.

DOI
10.1109/wf-iot58464.2023.10539439

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In this letter, the performance analysis of physical layer security over Fisher-Snedecor F\mathcal{F}F fading channels is investigated. In particular, the average secrecy capacity (ASC), the secure outage probability (SOP), the lower bound of the SOP (SOPL^LL), and the strictly positive secure capacity (SPSC) are derived in exact closed-from expressions. The Fisher-Snedecor F\mathcal{F}F fading channel is a composite of multipath/shadowed fading that are represented by the Nakagami-mmm distribution. Moreover, it provides close results to the practical measurements than the generalised KKK (KGK_GKG​) fading channels. To validate our analysis, the numerical results are affirmed by the Monte Carlo simulations.
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On Physical Layer Security Over the Fisher-Snedecor F{\mathcal{F}}F Wiretap Fading Channels
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In this paper, we investigate the physical layer security (PLS) of the traditional Wyner’s wiretap channel model. Secrecy performance analysis is performed assuming a presence of an active eavesdropper trying to overhear the confidential data transmission from the source node to the predefined destination. In what follows, we derive the lower bound of the secrecy outage probability, the strictly positive secrecy capacity as well as the average secrecy capacity, over the composite a-Fisher-Snedecor (a-F) fading environment. According to the analytical results, numerical results are also shown. The impact of the path loss component, the average signal-to-noise ratios over the main/wiretap channel as well as the impact of the fading, the non-linearity of the propagation medium and the shadowing shaping parameter on the PLS metrics is examined. The overall analysis and the obtained results have a high level of generality and also a high level of applicability since the a-F distribution was recently proposed, as the best fit distribution for the channel characterization of the device-to-device wireless communication in the future Beyond 5G networks.