1. Department of Electrical and Electronic Engineering, College of Technology (COT), University of Buea, P.O. Box 63, Buea, Cameroon
2. Research Unit of Automation and Applied Computer (URAIA), Electrical Engineering Department of IUT-FV, University of Dschang, P.O. Box 134, Bandjoun, Cameroon
3. Department of Automation, Biomechanics and Mechatronics, Lodz University of Technology, ul. Stefanowskiego 1/15, 90-537 Lodz, Poland
4. School of Fundamental Sciences, Massey University, Palmerston North, Private Bag 4410, New Zealand
5. Department of Electrical and Electronic Engineering, Faculty of Engineering and Technology (FET), University of Buea, P.O. Box 63, Buea, Cameroon
6. Department of Electrical Engineering, École de Technologie Supérieure (ÉTS), Montreal, Quebec H3C1K3, Canada
7. Unité de Recherche de Matière Condensée, d’Électronique et de Traitement de Signal (UR-MACETS), Faculty of Sciences, University of Dschang, P.O. Box 67, Dschang, Cameroon