期刊
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
卷 39, 期 11, 页码 3348-3362出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSAC.2021.3088688
关键词
Unmanned aerial vehicles; Trajectory; Wireless communication; Security; Data collection; Optimization; Communication system security; UAV networks; covert communication; physical layer security; artificial noise; full-duplex
资金
- National Natural Science Foundation of China [61901121, 62071234, 61771244]
- Natural Science Research Project of Education Department of Anhui Province of China [KJ2019A1002]
- Horizontal Cooperation Project [XDHX201705]
This work focuses on using UAV networks to covertly collect data from ground users, optimizing UAV trajectory, maximum AN transmit power, and user scheduling strategy to enhance system performance, and solving the non-convex optimization problem with the developed P-SCA scheme, achieving higher transmission rates.
This work considers unmanned aerial vehicle (UAV) networks for collecting data covertly from ground users. The full-duplex (FD) UAV intends to gather critical information from a scheduled user (SU) through wireless communication and generate artificial noise (AN) with random transmit power in order to ensure a negligible probability of the SU's transmission being detected by the unscheduled users (USUs). To enhance the system performance, we jointly design the UAV's trajectory and its maximum AN transmit power together with the user scheduling strategy subject to practical constraints, e.g., a covertness constraint, which is explicitly determined by analyzing each USU's detection performance, and a binary constraint induced by user scheduling. The formulated design problem is a mixed-integer non-convex optimization problem, which is challenging to solve directly, but tackled by our developed penalty successive convex approximation (P-SCA) scheme. An efficient UAV trajectory initialization is also presented based on the successive hover-and-fly (SHAF) trajectory, which also serves as a benchmark scheme. Our examination shows the developed P-SCA scheme significantly outperforms the benchmark scheme in terms of achieving a higher max-min average transmission rate (ATR) from all the SUs to the UAV.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据