PAPR Reduction Using Null Space in MIMO Channel Based on Signal Processing at Base Station for Downlink AF-Based Relaying MIMO-OFDM Signals. - Asuka Kakehashi; Nobuhide Nonaka; Kenichi Higuchi (VTC Fall, 2022)

PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals at Multiple-Antenna AF Relay Station Considering Direct Link from Base Station to User Equipment. - Asuka Kakehashi; Kenichi Higuchi (GCCE, 2023)

Base Station-Driven PAPR Reduction Method Utilizing Null Space for MIMO-OFDM Systems With Amplify-and-Forward Relaying. - Asuka Kakehashi; Takanori Hara; Kenichi Higuchi (IEEE Access, 2024)

Joint PAPR Reduction Using Null Space in MIMO Channel and Predistortion for MIMO-OFDM Signals in Multi-Antenna AF-Type Relay Transmission. - Asuka Kakehashi; Kenichi Higuchi (IEICE Trans. Commun., 2025)