1. College of Electronics and Information Engineering, Sichuan University, Chengdu, Sichuan, China;
2. Fujian Provincial Key Laboratory of Information Processing and Intelligent Control, Minjiang University, Fuzhou, China;
3. Department of Computer Science, Bahria University, Islamabad, Pakistan;
4. School of Electronic Engineering, Xidian University, Xi’an, China;
5. Department of Embedded Systems Engineering, Incheon National University, Incheon, Korea