Two-Phase Covert Communication with A Wireless-Powered Jammer by RIS

• Published in: IEEE transactions on vehicular technology pp. 1 - 6
• Main Authors: Zhang, Dengfeng, Zhang, Jia, Yuan, Qi, Sun, Jiande, Yan, Shihao
• Format: Journal Article
• Language: English
• Published: IEEE 2025
• Subjects: Communication system security; Covert communication; discrete phase shift; energy harvest; Interference; Jamming; Rayleigh channels; reconfigurable intelligent surface (RIS); Reconfigurable intelligent surfaces; Reflection; Switches; Transmitters; Vectors; Wireless communication

In this work, we consider a two-phase covert communication system assisted by a wireless powered jammer via a reconfigurable intelligent surface (RIS) with discrete phase shifts. Specifically, in the first phase, the jammer harvests energy from the same transmitter of covert signals with the aid of...