18 citations · 22 across the 9 of their papers we have counts for
9 papers · 1 filter
Evolution of UE in Massive MIMO Systems for 6G: From Passive to Active
Kwonyeol Park, Hyuckjin Choi, Geonho Han +4
As wireless networks continue to evolve, stringent latency and reliability requirements and highly dynamic channels expose fundamental limitations of gNB-centric massive multiple-i…
Anomaly Detection-Based UE-Centric Inter-Cell Interference Suppression
Kwonyeol Park, Hyuckjin Choi, Beomsoo Ko +7
The increasing spectral reuse can cause significant performance degradation due to interference from neighboring cells. In such scenarios, developing effective interference suppres…
Multi-User SLNR-Based Precoding With Gold Nanoparticles in Vehicular VLC Systems
Geonho Han, Hyuckjin Choi, Hyesang Cho +3
Visible spectrum is an emerging frontier in wireless communications for enhancing connectivity and safety in vehicular environments. The vehicular visible light communication (VVLC…
WMMSE-Based Rate Maximization for RIS-Assisted MU-MIMO Systems
Hyuckjin Choi, A. Lee Swindlehurst, Junil Choi
Reconfigurable intelligent surface (RIS) technology, given its ability to favorably modify wireless communication environments, will play a pivotal role in the evolution of future…
A Deep Reinforcement Learning Approach for Autonomous Reconfigurable Intelligent Surfaces
Hyuckjin Choi, Ly V. Nguyen, Junil Choi +1
A reconfigurable intelligent surface (RIS) is a prospective wireless technology that enhances wireless channel quality. An RIS is often equipped with passive array of elements and…
WiThRay: A Versatile Ray-Tracing Simulator for Smart Wireless Environments
Hyuckjin Choi, Jaehoon Chung, Jaeky Oh +2
This paper presents the development and evaluation of WiThRay, a new wireless three-dimensional ray-tracing (RT) simulator. RT-based simulators are widely used for generating reali…
On the Physical Layer Security of Visible Light Communications Empowered by Gold Nanoparticles
Geonho Han, Hyuckjin Choi, Ryeong Myeong Kim +3
Visible light is a proper spectrum for secure wireless communications because of its high directivity and impermeability in indoor scenarios. However, if an eavesdropper is located…
Downlink Channel Reconstruction for Spatial Multiplexing in Massive MIMO Systems
Hyeongtaek Lee, Hyuckjin Choi, Hwanjin Kim +4
To get channel state information (CSI) at a base station (BS), most of researches on massive multiple-input multiple-output (MIMO) systems consider time division duplexing (TDD) to…
Downlink Extrapolation for FDD Multiple Antenna Systems Through Neural Network Using Extracted Uplink Path Gains
Hyuckjin Choi, Junil Choi
When base stations (BSs) are deployed with multiple antennas, they need to have downlink (DL) channel state information (CSI) to optimize downlink transmissions by beamforming. The…