Author

S. Chatzinotas

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Preprint Aug 2026

Energy Efficient Multi-User Beamforming and 3D Position Optimization for SIM-Assisted UAVs

This paper studies energy-efficient downlink multi-user transmissions with unmanned aerial vehicle (UAV) communication systems equipped with stacked intelligent metasurfaces (SIM), enabling wave-domain analog beamforming through multiple cascaded metasurface layers, while low-dimensional digital precoding is carried ou...

Chandan Kumar Sheemar, Giovanni Iacovelli, Sourabh Solanki et al. · 1 citation

Preprint Jun 2026

Multi-Timescale Latent-Action DRL for Joint Optimization in Edge-Cloud Networks

A two-timescale multi-layer deep reinforcement learning framework with a latent action space (2T-MDRL-LA) to jointly optimize service placement, user association, computational delegation, task offloading, and user transmit power and achieves near-optimal performance compared to branch-and-bound solutions.

V. Son, Van-Dinh Nguyen, Ngoc Hung Nguyen et al. · 0 citations