Link Budget Analysis for Reconfigurable Smart Surfaces in Aerial Platforms

Non-terrestrial networks, including Unmanned Aerial Vehicles (UAVs), High Altitude Platform Station (HAPS) nodes and Low Earth Orbiting (LEO) satellites, are expected to have a pivotal role in sixth-generation wireless networks. With inherent features such as flexible placement, wide footprints, preferred channel conditions, they can tackle several challenges faced by current terrestrial However, their successful widespread adoption relies on energy-efficient on-board communication systems. In this context, the integration of Reconfigurable Smart Surfaces (RSS) into aerial platforms is envisioned key enabler cost-effective platform deployments. RSS consist low-cost reflectors capable smartly directing signals nearly passive way. paper, we investigate link budget RSS-assisted communications for two reflection paradigms discussed literature, namely “specular” “scattering” paradigms. Specifically, analyze characteristics RSS-equipped compare performance with that networks using standardized models. addition, derive optimal placements both Our results provide important insights design communications. For instance, given HAPS has large area RSS, it provides superior most studied scenarios. contrast, limited UAVs propagation loss LEO satellite make them unfavorable candidates supporting users. Finally, location an may depend platform’s altitude, coverage footprint, type environment