1. College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2. Department of Electrical Engineering, Sukkur IBA University, Sukkur 65200, Pakistan
3. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
4. School of Physics and Information Engineering, Shanxi Normal University, Taiyuan 030031, China