1. Frontiers Science Center for Smart High-speed Railway System and the School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
2. Laboratoire des Signaux et Systèmes, Université Paris-Saclay, CNRS, CentraleSupélec, Gif-sur-Yvette, France
3. State Key Laboratory of Mobile Network and Mobile Multimedia Technology, ZTE Corporation, Shenzhen, China
4. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, China