Document Type
Journal Article
Publication Title
Drones
Volume
7
Issue
7
Publisher
MDPI
School
School of Science / ECU Security Research Institute
RAS ID
61990
Funders
National Key Research and Development Program of China
Abstract
Driven by the rapidly growing demand for information security, covert wireless communication has become an essential technology and attracted tremendous attention. However, traditional wireless covert communication is continuously exposing the inherent limitations, creating challenges around deployment in environments with a large number of obstacles, such as cities with high-rise buildings. In this paper, we propose an intelligent reflecting surface (IRS)-assisted covert communication system (CCS) for communicating with a friendly unmanned aerial vehicle (UAV) in which the UAV generates artificial noise (AN) to interfere with monitoring. Furthermore, we model the power of AN emitted by the UAV using an uncertainty model, through which the closed-form detection error probability (DEP) of the covert wireless communication for monitoring is derived. Under the derived DEP, we formulate the optimization problem to maximize the covert rate, then design an iterative algorithm to solve the optimization problem and obtain the optimal covert rate using Dinkelbach method. Simulation results show that the proposed system achieves the maximum covert rate when the phase of the IRS units and the trajectory and transmit power of the UAV are optimized jointly.
DOI
10.3390/drones7070453
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Xu, X., Hu, L., Wei, S., Qian, Y., Yan, S., Shu, F., & Li, J. (2023). On IRS-assisted covert communication with a friendly UAV. Drones, 7(7), article 453. https://doi.org/10.3390/drones7070453