5 papers · 1 filter
Demand-Aware Cooperative Transmission Design for Energy-Efficient LEO Satellite Networks
Wooseok Cha, Kyeongsoo Kim, Seonghoon Kim +2
Low Earth orbit (LEO) satellite networks are envisioned as a promising solution for providing ubiquitous connectivity and narrowing the digital divide. The extensive footprint of L…
Analysis of Beam Misalignment Effect in Inter-Satellite FSO Links
Minje Kim, Hongjae Nam, Beomsoo Ko +4
Free-space optical (FSO) communication has emerged as a promising technology for inter-satellite links (ISLs) due to its high data rate, low power consumption, and reduced interfer…
Modeling and Analysis of Hybrid GEO-LEO Satellite Networks
Dong-Hyun Jung, Hongjae Nam, Junil Choi +1
As the number of low Earth orbit (LEO) satellites rapidly increases, the consideration of frequency sharing or cooperation between geosynchronous Earth orbit (GEO) and LEO satellit…
Machine Learning-based Channel Prediction in Wideband Massive MIMO Systems with Small Overhead for Online Training
Beomsoo Ko, Hwanjin Kim, Minje Kim +1
Channel prediction compensates for outdated channel state information in multiple-input multiple-output (MIMO) systems. Machine learning (ML) techniques have recently been implemen…
UV-Plane Beam Mapping for Non-Terrestrial Networks in 3GPP System-Level Simulations
Dong-Hyun Jung, Sucheol Kim, Miyeon Lee +2
Due to the high altitudes and large beam sizes of satellites, the curvature of the Earth's surface can impact system-level performance. To consider this, 3GPP introduces the UV-pla…