Efficient Channel AoD/AoA Estimation Using Widebeams for Millimeter Wave MIMO Systems. - Hyeongtaek Lee; Sucheol Kim; Junil Choi (SPAWC, 2019)

Massive MIMO Channel Prediction: Machine Learning Versus Kalman Filtering. - Hwanjin Kim; Sucheol Kim; Hyeongtaek Lee; Junil Choi (GLOBECOM (Workshops), 2020)

Downlink Channel Reconstruction for Massive MIMO Spatial Multiplexing. - Hyeongtaek Lee; Hyuckjin Choi; Hwanjin Kim; Sucheol Kim; Junil Choi (ICC, 2021)

Complete Power Reallocation for MU-MIMO under Per-Antenna Power Constraint. - Sucheol Kim; Hyeongtaek Lee; Hwanjin Kim; Yongyun Choi; Junil Choi (CoRR, 2021)

Massive MIMO Channel Prediction: Kalman Filtering Vs. Machine Learning. - Hwanjin Kim; Sucheol Kim; Hyeongtaek Lee; Chulhee Jang; Yongyun Choi; Junil Choi (IEEE Trans. Commun., 2021)

Downlink Channel Reconstruction for Spatial Multiplexing in Massive MIMO Systems. - Hyeongtaek Lee; Hyuckjin Choi; Hwanjin Kim; Sucheol Kim; Chulhee Jang; Yongyun Choi; Junil Choi (IEEE Trans. Wirel. Commun., 2021)

Channel Estimation for Intelligent Reflecting Surface Assisted MmWave Systems Using Analog Feedback. - Sucheol Kim; Hyeongtaek Lee; Jihoon Cha; Junil Choi (SAM, 2022)

Parameter-Based Channel Estimation for Intelligent Reflecting Surface Aided MIMO Systems. - Sucheol Kim; Hyeongtaek Lee; Jihoon Cha; Junil Choi (WCNC, 2022)

Low-Complexity Beamforming Optimization for IRS-Aided MU-MIMO Wireless Systems. - Seungsik Moon; Hyeongtaek Lee; Junil Choi; Youngjoo Lee (IEEE Trans. Veh. Technol., 2022)

Practical Channel Estimation and Phase Shift Design for Intelligent Reflecting Surface Empowered MIMO Systems. - Sucheol Kim; Hyeongtaek Lee; Jihoon Cha; Sung-Jin Kim; Jaeyong Park; Junil Choi (IEEE Trans. Wirel. Commun., 2022)

Multi-User Beamforming under Per-Antenna Power Constraint. - Sucheol Kim; Hyeongtaek Lee; Hwanjin Kim; Junil Choi (ICTC, 2023)

Complete Power Reallocation for MU-MISO Under Per-Antenna Power Constraint. - Sucheol Kim; Hyeongtaek Lee; Hwanjin Kim; Yongyun Choi; Junil Choi (IEEE Trans. Commun., 2023)

Channel Estimation for Reconfigurable Intelligent Surface With a Few Active Elements. - Gyoseung Lee; Hyeongtaek Lee; Jaeky Oh; Jaehoon Chung; Junil Choi (IEEE Trans. Veh. Technol., 2023)

Two-Way Optimization for RIS Empowered FDD MIMO Communication Systems. - Gyoseung Lee; Hyeongtaek Lee; A. Lee Swindlehurst; Junil Choi (WCNC, 2024)

An Experimental Multi-Band Channel Characterization in the Upper Mid-Band. - Roberto Bomfin; Ahmad Bazzi; Hao Guo; Hyeongtaek Lee; Marco Mezzavilla; Sundeep Rangan; Junil Choi; Marwa Chafii (CoRR, 2024)

Joint Downlink and Uplink Optimization for RIS-Aided FDD MIMO Communication Systems. - Gyoseung Lee; Hyeongtaek Lee; Donghwan Kim; Jaehoon Chung; A. Lee Swindlehurst; Junil Choi (IEEE Trans. Wirel. Commun., 2024)

Multi-Group Multicasting Systems Using Multiple RISs. - Hyeongtaek Lee; Seungsik Moon; Youngjoo Lee; Jaeky Oh; Jaehoon Chung; Junil Choi (IEEE Trans. Wirel. Commun., 2024)

RIS-Enabled Cellular Systems Operated by Different Service Providers. - Hyeongtaek Lee; Junil Choi (IEEE Trans. Veh. Technol., 2025)

Robust Transmission Design for Active RIS-Aided Systems. - Jinho Yang; Hyeongtaek Lee; Junil Choi (IEEE Trans. Veh. Technol., 2025)