1. Research Unit of Automation and Applied Computer (UR-AIA), Electrical Engineering Department of IUT-FV, University of Dschang, P.O. Box: 134, Bandjoun, Cameroon
2. Research Unit of Condensed Matter of Electronics and Signal Processing. Department of Physics, Faculty of Sciences, University of Dschang, P.O. Box 67, Dschang, Cameroon