UAV-Enabled Covert Wireless Data Collection
Autor: | Feng Shu, Jun Li, Shihao Yan, Riqing Chen, Xiaobo Zhou |
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Rok vydání: | 2021 |
Předmět: |
Signal Processing (eess.SP)
Optimization problem Computer Networks and Communications Computer science business.industry Real-time computing Initialization Binary constraint Transmitter power output Scheduling (computing) FOS: Electrical engineering electronic engineering information engineering Benchmark (computing) Wireless Artificial noise Electrical Engineering and Systems Science - Signal Processing Electrical and Electronic Engineering business |
Zdroj: | IEEE Journal on Selected Areas in Communications. 39:3348-3362 |
ISSN: | 1558-0008 0733-8716 |
Popis: | 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. |
Databáze: | OpenAIRE |
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