Rao, Bin and Hu, Jie and Al-nahari, Azzam and Yang, Kun and Jäntti, Riku (2023) On the Physical Layer Security of UAV-Aided Backscatter Communications. IEEE Wireless Communications Letters, 13 (2). pp. 274-278. DOI https://doi.org/10.1109/lwc.2023.3324914
Rao, Bin and Hu, Jie and Al-nahari, Azzam and Yang, Kun and Jäntti, Riku (2023) On the Physical Layer Security of UAV-Aided Backscatter Communications. IEEE Wireless Communications Letters, 13 (2). pp. 274-278. DOI https://doi.org/10.1109/lwc.2023.3324914
Rao, Bin and Hu, Jie and Al-nahari, Azzam and Yang, Kun and Jäntti, Riku (2023) On the Physical Layer Security of UAV-Aided Backscatter Communications. IEEE Wireless Communications Letters, 13 (2). pp. 274-278. DOI https://doi.org/10.1109/lwc.2023.3324914
Abstract
In this letter, we investigate the issue of physical layer security in unmanned aerial vehicle (UAV)-assisted backscatter communication. The scenario involves a single UAV, a single passive backscatter device (BD), in the presence of a single eavesdropper (ED) attempting to intercept the backscattered information from the BD. To counteract the ED’s efforts, we propose an artificial noise (AN) injection scheme to degrade the ED link. We aim to maximize the secrecy rate of the BD by optimizing three key factors: the UAV’s hovering position, the power allocation factor, and the reflection coefficient of the BD. For this system setting, we derive the secrecy rate and formulate an optimization problem to optimize these variables. Due to the non-convex nature of the problem, we design an iterative algorithm based on the alternating optimization (AO) algorithm for maximizing the secrecy rate. Additionally, we provide insights into the impact of various system parameters on the overall performance. Notably, we demonstrate that the power allocation factor and the hovering altitude of the UAV play important roles for achieving secure communication.
Item Type: | Article |
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Uncontrolled Keywords: | Unmanned aerial vehicle (UAV); backscatter communications; physical layer security; artificial noise (AN) |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 09 Jan 2024 16:36 |
Last Modified: | 18 Feb 2024 06:20 |
URI: | http://repository.essex.ac.uk/id/eprint/37528 |
Available files
Filename: On_the_Physical_Layer_Security_of_UAV-Aided_Backscatter_Communications.pdf