1. School of Electronic and Electrical Engineering, Minnan University of Science and Technology, Quanzhou 362700, China
2. School of Electronic & Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
3. Department of Computer, Control and Management Engineering, University of Rome La Sapienza, Via Ariosto 25, 00185 Roma, Italy
4. Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy