1. Wavecontrol SL, Carrer de Pallars 65, 08014 Barcelona, Spain
2. Department of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy
3. EMZER Technological Solutions SL, Carrer de Pallars 65, 08014 Barcelona, Spain