37 citations · 44 across the 12 of their papers we have counts for
9 papers · 1 filter
Energy Efficiency Optimization for 5G NR PDSCH: A Cross-Layer Link Abstraction Framework
Jaebum Park, Chan-Byoung Chae, Robert W. Heath
Energy efficiency (EE) optimization for cellular links often assumes Shannon-capacity transmission. The 3GPP New Radio (NR) physical downlink shared channel (PDSCH), however, deliv…
Geometry-Aware DRL for Multi-Subband Scheduling in Satellite-Assisted UAM Networks
Hyung-Joo Moon, Sangha Park, Chan-Byoung Chae +1
In this paper, we investigate downlink scheduling for urban air mobility (UAM) in a cooperative space-air-ground integrated network. Multiple ground stations (GSs) employ narrow th…
Channel2World: A Wireless Foundation Model for RF Environment Representation
Hyung-Joo Moon, Joonkyu Jang, Kwang Soon Kim +3
Wireless channels are commonly treated as link-specific observations, although their multipath structure is governed by the surrounding radio-frequency (RF) environment. In this pa…
When 5G MIMO Scaling Breaks: Toward 6G Upper-Mid-Band Extreme MIMO
Kwang Soon Kim, Jeonghun Park, Byung-Wook Min +9
The upper-mid band, particularly the 7-8 GHz range within frequency range 3 (FR3), has emerged as a leading spectrum candidate for wide-area sixth-generation (6G) cellular networks…
Energy Efficiency Optimization in Distributed MIMO vRAN via Cross-Layer Link Abstraction
Jaebum Park, Chan-Byoung Chae, Robert W. Heath
Virtualized radio access networks (vRAN) run the compute-intensive multiple-input multiple-output (MIMO) baseband as software on shared servers, which makes energy efficiency (EE)…
Signal Processing Foundations of Reconfigurable Antennas in the Tri-Hybrid MIMO Architecture
Nitish Vikas Deshpande, Joseph Carlson, Siyun Yang +6
To enable larger apertures in multipleinput multipleoutput MIMO systems the trihybrid MIMO architecture offers a promising lowcost and lowpower solution by introducing reconfigurab…
Extreme-MIMO Field Trials in 7 GHz Band: Unlocking the Potential of New Spectrum for 6G
Seunghyun Lee, Jungmin Yoon, Sangwon Jung +6
The frequency range around 7 GHz has emerged as a promising upper mid-band spectrum for 6th generation (6G), offering a practical balance between coverage and capacity. To fully ex…
Switch-DFT: Adaptive Waveform and MIMO Switching for Energy-Efficient Base Stations
Jaebum Park, Chan-Byoung Chae, Robert W. Heath
Energy efficiency has emerged as a critical challenge in modern base stations (BSs), as the power amplifier (PA) consumes a substantial portion of the total power due to its limite…
Accelerating vRAN and O-RAN with SIMD: Architectural Perspectives and Performance Evaluation
Jaebum Park, Chan-Byoung Chae, Robert W. Heath
The evolution of radio access networks (RANs) toward virtualization and openness creates new opportunities for flexible, cost-effective, and high-performance deployments. Achieving…