1. Center of Aerocraft TT&C and CommunicationChongqing UniversityChongqing400044People's Republic of China
2. College of Communication EngineeringChongqing UniversityChongqing400044People's Republic of China
3. Shenzhen Key Laboratory of Millimeter Waves Wireless CenterCityU Shenzhen Research InstituteShenzhen518057People's Republic of China
4. School of Electrical EngineeringSouthwest Jiaotong UniversityChengdu611756People's Republic of China