UAV-Enabled Covert Communication Against Uncertainly Located Warden

作者：Huaqing Yang, Dongdong Li, Hu Wang, Linhan Wang, Zhutian Yang · 发表于：2025 IEEE 102nd Vehicular Technology Conference (VTC2025-Fall) · 年份：2025 · DOI：10.1109/vtc2025-fall65116.2025.11310276 · 被引用次数：1 · 研究领域：Computer Science

The openness of wireless communication poses significant privacy risks to systems enabled by unmanned aerial vehicle (UAV). In this paper, we investigate multi-antenna UAV-enabled covert communication system against an uncertainly located ground warden. The location-uncertain warden presents a heightened challenge to covert communication. We propose an effective scheme to deal with the covert communication against uncertainly located warden. In the first stage, we consider the worst-case scenario, assuming the warden is in the ideal detection threshold and the optimal position. First, we derive the ideal threshold and then use sequential quadratic programming (SQP) algorithm to determine the optimal position. In the second stage, we enhance the performance of UAV-enabled covert communication with SQP algorithm by jointly optimizing the transmission rate, transmission power, and artificial jamming power of full-duplex receiver. Our simulation results demonstrate that covert communication is achievable in the location-uncertain scenario through the proposed scheme.