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, Huzhou Teachers College, Huzhou, People's Republic of China
4. Department of Mathematics, Yangzhou University, Yangzhou, People's Republic of China
5. Communication Systems and Networks (CSN) Research Group, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia