1. School of Electronical and Control Engineering, Shaanxi University of Science and Technology, Xi’an, China
2. Shaanxi Joint Laboratory of Artificial Intelligence, Shaanxi University of Science and Technology, Xi’an, China
3. School of Electrical and Information Engineering, Tianjin University, Tianjin, China
4. School of Computer Science and Engineering, Xi’an University of Technology, Xi’an, China
5. Faculty of Technology, Bielefeld University, Bielefeld, Germany
6. Department of Electronic and Electrical Engineering, Brunel University London, Uxbridge, U.K.