1. School of Economics and Management, Chongqing Jiaotong University, Chongqing, People's Republic of China
2. Department of Mathematics, Chongqing Jiaotong University, Chongqing, People's Republic of China
3. Department of Mathematics, Yangzhou University, Yangzhou, People's Republic of China
4. School of Mathematics and Physics, Yancheng Institute of Technology, Yancheng, People's Republic of China
5. Communication Systems and Networks (CSN) Research Group, Department of Electrical and Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia