1. School of Engineering, Qufu Normal University, Rizhao 276826, China, also with the School of Information Science and Engineering, Chengdu University, Chengdu 610106, China, and also with the Department of Engineering Technology, Rizhao Huilian Zhongchuang Institute of Intelligent Technology, Rizhao 276826, China.
2. School of Engineering, Qufu Normal University, Rizhao 276826, China.
3. Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea (e-mail: jessie@ynu.ac.kr)
4. School of Mathematics, Southeast University, Nanjing 211189, China, and also with the Yonsei Frontier Lab, Yonsei University, Seoul 03722, Republic of Korea.
5. College of Mathematics and Statistics, Guangxi Normal University, Guilin 541006, China, and also with the School of Information Science and Engineering, Chengdu University, Chengdu 610106, China.