2 citations · 2 across the 10 of their papers we have counts for
6 papers · 1 filter
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Channel prediction compensates for outdated channel state information in multiple-input multiple-output (MIMO) systems.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…
Meta-Heuristic Fronthaul Bit Allocation for Cell-free Massive MIMO Systems
Minje Kim, In-soo Kim, Junil Choi
Limited capacity of fronthaul links in a cell-free massive multiple-input multiple-output (MIMO) system can cause quantization errors at a central processing unit (CPU) during data…
Knowledge Distillation from Language-Oriented to Emergent Communication for Multi-Agent Remote Control
Yongjun Kim, Sejin Seo, Jihong Park +3
In this work, we compare emergent communication (EC) built upon multi-agent deep reinforcement learning (MADRL) and language-oriented semantic communication (LSC) empowered by a pr…
Analyzing Downlink Coverage in Clustered Low Earth Orbit Satellite Constellations: A Stochastic Geometry Approach
Miyeon Lee, Sucheol Kim, Minje Kim +2
Satellite networks are emerging as vital solutions for global connectivity beyond 5G. As companies such as SpaceX, OneWeb, and Amazon are poised to launch a large number of satelli…