1. ReDCAD Lab, ENIS, University of Sfax, Sfax, Tunisia
2. Laboratory of Signals, Systems, Artificial Intelligence and Networks (SM@RTS), Centre de Recherche en Numérique de Sfax, Technopôle de Sfax, Sfax, Tunisia
3. Department of Mathematics and Computer Science, Philipps-Universität Marburg, Marburg, Germany