13 papers
Joint Geometric and QoS-Aware Routing in Optical LEO Satellite Networks via DRL
Abdulrahman Al-Hababi, Meysam Ghanbari, Mohammad Taghi Dabiri +3
Optical inter satellite links ISLs are becoming the backbone of modern LEO constellations offering high capacity and low latency but introducing stringent geometric and physical la…
Receiver-Side Physics-Informed Residual Digital Twin for Predictive Fine Tracking in Inter-Satellite Optical Links
Mahtab Dashtebozorgi, Meysam Ghanbari, Rula Ammuri +2
Fine tracking in inter-satellite optical links must compensate residual line-of-sight (LOS) motion despite sensor noise, vibration, model mismatch, and actuator latency. This paper…
Learning-Free Hierarchical Joint Estimation of AoA, Pointing Error, Receiver Jitter, and Turbulence in Multi-Aperture FSO Systems
Mahtab Dashtebozorgi, Meysam Ghanbari, Rula Ammuri +2
This paper proposes a learning free hierarchical estimator for jointly recovering the angle of arrival (AoA), transmitter pointing error, receiver induced jitter, and per aperture…
OHL-Assisted All-Optical Regenerative Relaying for Pointing-Impaired M-PAM Inter-Satellite Links
Meysam Ghanbari, Mohammad Taghi Dabiri, Zain Ali +4
Rapid inter-satellite traffic growth in LEO constellations demands spectrally efficient, low-latency optical relaying. While amplify and forward (AF) relays are latency-efficient,…
QoS- and Physics-Aware Routing in Optical LEO Satellite Networks via Deep Reinforcement Learning
Mohammad Taghi Dabiri, Rula Ammuri, Mazen Hasna +1
Optical inter-satellite links (ISLs) are becoming the principal communication backbone in modern large-scale LEO constellations, offering multi-Gb/s capacity and near speed-of-ligh…
Towards City-Scale Quantum Timing: Wireless Synchronization via Quantum Hubs
Mohammad Taghi Dabiri, Mazen Hasna, Rula Ammuri +2
This paper presents a novel wireless quantum synchronization framework tailored for city-scale deployment using entangled photon pairs and passive corner cube retroreflector (CCR)…
Balancing Decentralized Trust and Physical Evidence: A Blockchain-Physical Layer Co-Design for Real-Time 3D Prioritization in Disaster Zones
Mohammad Taghi Dabiri, Mazen Hasna, Aiman Erbad +2
During disaster response, making rapid and well-informed decisions about which areas require immediate attention can save lives. However, current coordination models often struggle…
CV Quantum Communications with Angular Rejection Filtering: Modeling and Security Analysis
Mohammad Taghi Dabiri, Meysam Ghanbari, Rula Ammuri +3
Continuous-variable quantum key distribution (CVQKD) over free-space optical links is a promising approach for secure communication, but its performance is limited by turbulence, p…
AI Assisted Next Gen Outdoor Optical Networks: Camera Sensing for Monitoring and User Localization
Meysam Ghanbari, Mohammad Taghi Dabiri, Rula Ammuri +2
We consider outdoor optical access points (OAPs), which, enabled by recent advances in metasurface technology, have attracted growing interest. While OAPs promise high data rates a…
MRR-Based Line-Laser Scanning for Reliable Vehicular Positioning and Optical Communication
Mohammad Taghi Dabiri, Hossein Safi, Rula Ammuri +4
High-speed vehicular environments require optical systems capable of joint sensing, positioning, and communication (JSPC) without mechanical tracking. Existing optical and integrat…
Learning-Driven Dual-Line Laser Scanning for Fast and Accurate LEO Satellite Positioning
Mohammad Taghi Dabiri, Rula Ammuri, Mazen Hasna +1
Accurate and low-latency positioning is a key enabler for optical links with Low Earth Orbit (LEO) satellites, where millisecond-level beam alignment is required to maintain reliab…
Hierarchical Deep Learning for Joint Turbulence and PE Estimation in Multi-Aperture FSO Systems
Mohammad Taghi Dabiri, Meysam Ghanbari, Rula Ammuri +2
Accurate characterization of free-space optical (FSO) channels requires joint estimation of transmitter pointing errors, receiver angle-of-arrival (AoA) fluctuations, and turbulenc…
Compact Analytical Model for Real-Time Evaluation of OAM-Based Inter-Satellite Links
Mohammad Taghi Dabiri, Mazen Hasna
This paper presents an efficient analytical framework for evaluating the performance of inter-satellite communication systems utilizing orbital angular momentum (OAM) beams under p…