Author

Chan-Byoung Chae

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Preprint Aug 2026

Channel2World: A Wireless Foundation Model for RF Environment Representation

Channel2World is proposed, a wireless foundation model that learns a reusable environment-level representation from multiple-input multiple-output (MIMO) channel-position observations that generalizes across deployments and provides effective conditioning in unseen environments.

Hyung-Joo Moon, J. Jang, Kwang Soon Kim et al. · 0 citations

Preprint Aug 2026

Geometry-Aware DRL for Multi-Subband Scheduling in Satellite-Assisted UAM Networks

GeoSetPPO is proposed, a geometry-aware set-attention proximal policy optimization (PPO) method that outputs per-UAM discrete association and subband decisions with permutation-invariant representations that demonstrates stable convergence, higher returns, and favorable reward and schedule-feasibility performance relat...

Hyung-Joo Moon, Sangha Park, Chan-Byoung Chae et al. · 0 citations

Preprint Jul 2026

Energy Efficiency Optimization in Distributed MIMO vRAN via Cross-Layer Link Abstraction

The proposed framework achieves higher average EE than a traffic-agnostic always-on MIMO baseline, while maintaining comparable throughput at peak hours, and is extended to a traffic-aware setting with realistic user trajectories from the multi-agent transport simulator.

Jae-Don Park, Chan-Byoung Chae, Robert W. Heath · 0 citations