1. Department of Electronic Systems, Norwegian University of Science and Technology, 2821 Gjøvik, Norway
2. Department of Information Security and Communication Technology, Norwegian University of Science and Technology, 2821 Gjøvik, Norway
3. Department of Electrical and Electronics Engineering, Atilim University, Incek Golbasi, 06830 Ankara, Turkey
4. Department of Computer Science, Norwegian University of Science and Technology, 2821 Gjøvik, Norway