1. School of Computer Science and Cyber Engineering, Guangzhou University, Guangzhou, China
2. Signal Processing and Satellite Communications Research Group (SIGCOM), Interdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg, Luxembourg, Luxembourg
3. School of Information Science and Technology, Southwest Jiaotong University, Chengdu, China
4. Department of Electrical and Computer Engineering, Utah State University, Logan, UT, USA