1. Department of Electrical and Information Engineering (DEI), Technical University of Bari, Via E. Orabona 4, 70125 Bari, Italy
2. Radio-Electronic and Information & Measuring Technology Department, Kazan National Research Technical University (KNRTU-KAI), Karl Marx Street 10, Kazan, Tatarstan 420111, Russia
3. Department of Electrical Engineering, Institute of Engineering (ISEP), Polytechnic of Porto, Rua Dr. Antonio Bernardino de Almeida 431, 4200-072 Porto, Portugal
4. IMS Laboratory, Bordeaux 1 University, 351 Cours de la Liberation, 33400 Talence, France