1. Department of Radio Engineering Systems, Saint Petersburg Electrotechnical University, Saint Petersburg, Russia
2. Institute for Computer Technologies and Information Security, Southern Federal University, Taganrog, Russia
3. Institute of High Frequency Technology, Hamburg University of Technology, Hamburg, Germany
4. Faculty of Electrical Engineering and Informatics, Technical University of Košice, Košice, Slovakia
5. Faculty of Aeronautics, Technical University of Košice, Košice, Slovakia