5 papers
Stochastic Design of Active RIS-Assisted Satellite Downlinks under Interference, Folded Noise, and EIRP Constraints
Muhammad Khalil, Ke Wang, Jinho Choi
Active reconfigurable intelligent surfaces (RISs) can mitigate the double-fading loss of passive reflection in satellite downlinks. However, their gains are limited by random co-ch…
Adaptive Channel Estimation and Quantized Feedback for RIS Assisted Optical Wireless Communication Systems
Muhammad Khalil, Ke Wang, Jinho Choi
This paper presents a unified modeling, estimation, and feedback framework for reconfigurable intelligent surface RIS-assisted optical wireless links. The key modeling element is a…
Performance Evaluation of High Power Microwave Systems Against UAVs A Probabilistic Antenna Propagation Framework with Sensitivity Analysis
Muhammad Khalil, Ke Wang, Jinho Choi
We present an uncertainty-aware probabilistic framework for high-power microwave (HPM) counter-UAV performance under stochastic target motion, beam-pointing uncertainty, atmospheri…
Adaptive Power Allocation in Spaceborne Assisted NOMA Systems for Integrated Terrestrial Communications
M Khalil, Ke Wang, Jinho Choi
This study introduces an innovative approach for adaptive power allocation in Non-Orthogonal Multiple Access (NOMA) systems, enhanced by the integration of spaceborne and terrestri…
Enhancing Satellite Quantum Key Distribution with Dual Band Reconfigurable Intelligent Surfaces
Muhammad Khalil, Ke Wang, Jinho Choi
This paper presents a novel system architecture for hybrid satellite communications, integrating quantum key distribution (QKD) and classical radio frequency (RF) data transmission…