1. Department of Electronics and Robotics, Almaty University of Power Engineering and Telecommunications, Almaty 050013, Kazakhstan
2. Institute of Automation and Telecommunication, Academy of Logistics and Transport, Almaty 050012, Kazakhstan
3. Department of Telecommunications, University of Ruse, 7004 Ruse, Bulgaria
4. Department of Thermal Power Engineering, Kazakh Agrotechnical University, Astana 010011, Kazakhstan