1. Department of Communications Engineering, National Chung Cheng University, Chiayi, Taiwan
2. Department of Electrical Engineering, National Chung Cheng University, Chiayi, Taiwan
3. Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan
4. Advanced Institute for Manufacturing with High-tech Innovations (AIM-HI), National Chung Cheng University, Chiayi, Taiwan