1. Department of Telecommunications Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
2. Department of Electronics and Telecommunications Engineering, Faculty of Industrial Education and Technology, Rajamangala University of Technology Srivijaya, Songkhla 90000, Thailand
3. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic
4. Czech Technical University in Prague, Faculty of Biomedical Engineering, nám.Sítná 3105, Kladno, Czech Republic