1. School of Business, Sichuan Normal University, Chengdu, P.R. China
2. Communications Systems and Networks (CSN) Research Group, Department of Electrical and Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia
3. Department of Mathematics, Quaid-I-Azam University, Islamabad, Pakistan
4. Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia