468 citations · 1.9k across the 64 of their papers we have counts for
68 papers
Joint Channel Estimation and Beamforming for Reconfigurable Intelligent Surface Aided MIMO Systems: Sparsity-Based Approach
Sung Hyuck Hong, Junil Choi
Continuous efforts have been devoted to integrate millimeter wave (mmWave) and terahertz (THz) bands into future communication standards in order to overcome the bandwidth shortage…
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…
Satellite Clusters Flying in Formation: Orbital Configuration-Dependent Performance Analyses
Dong-Hyun Jung, Joon-Gyu Ryu, Junil Choi
This paper considers a downlink satellite communication system where a satellite cluster, i.e., a satellite swarm consisting of one leader and multiple follower satellites, serves…
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…
EMC2-Net: Joint Equalization and Modulation Classification based on Constellation Network
Hyun Ryu, Junil Choi
Modulation classification (MC) is the first step performed at the receiver side unless the modulation type is explicitly indicated by the transmitter. Machine learning techniques h…
Channel Estimation for Reconfigurable Intelligent Surface with a few Active Elements
Gyoseung Lee, Hyeongtaek Lee, Jaeky Oh +2
In this paper, a channel estimation technique for reconfigurable intelligent surface (RIS)-aided multi-user multiple-input single-output communication systems is proposed. By deplo…