3 papers
cs.IT2026
GNN-Based Polarforming for Multi-User MISO Short-Packet URLLC under Imperfect CSI
Zahra Mehrzad, Hamed Aghaei-Karkaj, Rahman Saadat Yeganeh +4
This paper investigates polarization-aware transmission for multi-user multiple-input single-output (MU-MISO) short-packet ultra-reliable low-latency communications (URLLC) under i…
eess.SY2025
Enhancing Energy and Spectral Efficiency in IoT-Cellular Networks via Active SIM-Equipped LEO Satellites
Rahman Saadat Yeganeh, Hamid Behroozi, Mohammad Javad Omidi +3
This paper investigates a low Earth orbit (LEO) satellite communication system enhanced by an active stacked intelligent metasurface (ASIM), mounted on the backplate of the satelli…
eess.SP2025
Energy Efficient RSMA-Based LEO Satellite Communications Assisted by UAV-Mounted BD-Active RIS: A DRL Approach
Rahman Saadat Yeganeh, Hamid Behroozi
This paper proposes an advanced non-terrestrial communication architecture that integrates Rate-Splitting Multiple Access (RSMA) with a Beyond-Diagonal Active Reconfigurable Intell…