Efficient Phase Control Determination by Codebook without CSI for Standalone IRS Realization. - Ryuhei Hibi; Yuichi Kawamoto; Nei Kato (GLOBECOM, 2022)

Standalone-Intelligent Reflecting Surface Control Method Using Hierarchical Exploration by Beamwidth Expansion and Environment-Adaptive Codebook. - Ryuhei Hibi; Yuichi Kawamoto; Nei Kato (IEEE Trans. Veh. Technol., 2023)

3D Codebook Construction Strategy based on Control Accuracy Index for Intelligent Reflecting Surface in Near-field. - Ryuhei Hibi; Hiroaki Hashida; Yuichi Kawamoto; Nei Kato (VTC Fall, 2024)

IRS-Aided Near-Field Communication: Prospects and Challenges with Codebook Approach. - Ryuhei Hibi; Hiroaki Hashida; Yuichi Kawamoto; Nei Kato (IEEE Wirel. Commun., 2025)