1. Department of Electronics and Communication Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India
2. Discipline of Electrical, Electronic and Computer Engineering, University of KwaZulu-Natal, Durban 4041, South Africa
3. Department of Information and Communication Technology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India
4. Department of Electrical and Computer Engineering, University of Western Macedonia, 50100 Kozani, Greece
5. Ignion, 08174 Barcelona, Spain
6. Research Group on Smart Society, La Salle Engineering, Universitat Romon Llull, 08022 Barcelona, Spain