1. Department of Electrical Engineering, School of Energy Systems, Lappeenranta-Lahti University of Technology (LUT), Lappeenranta, Finland
2. Department of Telecommunications, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic
3. Institute of Automation and Computer Science, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic
4. Department of Computer Science, Federal University of Lavras, Lavras, Minas Gerais, Brazil
5. Unit of Electrical Engineering, Tampere University, Tampere, Finland
6. School of Electrical and Computer Engineering, State University of Campinas (UNICAMP), Campinas, Brazil