Department of Electronic and Informatics Engineering, University of Algarve, Faro, Portugal. antoniodosanjos@gmail.com|Department of Electronic and Informatics Engineering, University of Algarve, Faro, Portugal. antoniodosanjos@gmail.com|Department of Electronic and Informatics Engineering, University of Algarve, Faro, Portugal. antoniodosanjos@gmail.com|Department of Electronic and Informatics Engineering, University of Algarve, Faro, Portugal. antoniodosanjos@gmail.com|Department of Electronic and Informatics Engineering, University of Algarve, Faro, Portugal. antoniodosanjos@gmail.com