Secure Swarm UAV-assisted Communications with Cooperative Friendly Jamming
Hanh Dang-Ngoc, Diep N. Nguyen, Khuong Ho-Van, Dinh Thai Hoang, Eryk, Dutkiewicz, Quoc-Viet Pham, and Won-Joo Hwang

TL;DR
This paper introduces a cooperative friendly jamming framework for UAV swarms that enhances secure communications by optimizing energy harvesting and relay strategies, validated through theoretical analysis and simulations.
Contribution
It develops a novel time-switching relaying protocol for UAV swarms with energy harvesting and jamming, along with analytical SOP derivation for security performance evaluation.
Findings
The proposed framework improves secrecy outage probability compared to conventional systems.
Analytical SOP expressions match simulation results, validating the theoretical model.
Optimization insights for UAV placement and energy harvesting enhance secure communication performance.
Abstract
This article proposes a cooperative friendly jamming framework for swarm unmanned aerial vehicle (UAV)-assisted amplify-and-forward (AF) relaying networks with wireless energy harvesting. Due to the limited energy of the UAVs, we develop a collaborative time-switching relaying protocol which allows the UAVs to collaborate to harvest wireless energy, relay information, and jam the eavesdropper. To evaluate the secrecy rate, we derive the secrecy outage probability (SOP) for two popular detection techniques at the eavesdropper, i.e., selection combining and maximum-ratio combining. Monte Carlo simulations are then used to validate the theoretical SOP derivation and to show the effectiveness of the proposed framework in terms of SOP as compared with the conventional amplify-and-forward relaying system. Using the derived SOP, one can obtain engineering insights to optimize the energy…
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