4 papers · 1 filter
Hardware-Efficient Cognitive Radar: Multi-Target Detection with RL-Driven Transmissive RIS
Adam Umra, Aya Mostafa Ahmed, Stefan Roth +1
Cognitive radar has emerged as a key paradigm for next-generation sensing, enabling adaptive, intelligent operation in dynamic and complex environments. Yet, conventional cognitive…
Covertness in the Near Field: Maximizing the Covert Region with FDA
Fatemeh Lotfi, Stefan Roth, Anas Chaaban +1
Covert communication in wireless networks ensures that transmissions remain undetectable to adversaries, making it a potential enabler for privacy and security in sensitive applica…
Enhancing the Secrecy Rate with Direction-range Focusing with FDA and RIS
Chu Li, Stefan Roth, Aydin Sezgin
One of the great potentials to improve the confidentiality in mmWave/THz at the physical layer of technical communication, measured by the secrecy rate, lies in the use of reconfig…
Base-Stations Up in the Air: Multi-UAV Trajectory Control for Min-Rate Maximization in Uplink C-RAN
Stefan Roth, Ali Kariminezhad, Aydin Sezgin
In this paper we study the impact of unmanned aerial vehicles (UAVs) trajectories on terrestrial users' spectral efficiency (SE). Assuming a strong line of sight path to the users,…