Fotsin Hilaire Bertrand

Work place: Laboratory of Condensed Matter-Electronics and Signal Processing (LAMACET), Department of Physics, Faculty of Sciences, University of Dschang, Cameroon



Research Interests: Physics, Computational Physics


Fotsin Hilaire Bertrand is a Professor of physics and electronics at the University of Dschang, Cameroon, where he is the Deputy Head of the Condensed Matter, Electronics, and Signal Processing Laboratory. He was awarded the “Doctorat de Troisième Cycle” degree in physics (electronics) from the University of Yaoundé I (Cameroon) in 2000. In 2005, he was awarded the “Doctorat d’Etat” degree from the University of Yaoundé I, Cameroon. He served as an Assistant Lecturer at the Physics Department, Faculty of Science, University of Dschang, Cameroon, from 1996 to 2000. From 2000 to 2009 he worked as a Lecturer in the same Department. From 2004 to 2005 he was a Visiting Scientist at the Centre de Recherche en Automatique de Nancy (CRAN) in France. In 2009, he became an associate professor. In 2016, he became a full professor of Physics. His research interests include nonlinear dynamics, focusing on chaos control and synchronization in electronic circuits. Professor Fotsin is the author and coauthor of more than 80 scientific articles in the area of nonlinear dynamics, chaos control and chaos synchronization, and renewable energies.

Author Articles
A Secure Communication Scheme using Generalized Modified Projective Synchronization of Coupled Colpitts Oscillators

By Kammogne Soup Tewa Alain Fotsin Hilaire Bertrand

DOI:, Pub. Date: 8 Jan. 2018

A new scheme for secure information transmission is proposed using the generalized modified projective synchronization (GMPS) method. The linear transformation of the modified Colpitts oscillator, first introduced in Cristinel and Radu (Low-Power Realizations of Secure Chaotic Communication Schemes. IEEE Asia Pacific Conference on Circuits and Systems, 2000) is investigated prior to the more detailed study by Kammogne et al. (Journal of chaos. (2014). doi: 10.1155/2014/659647). This circuit is employed to encrypt the information signal. In the receiver end, by designing the controllers and the parameter update rule, GMPS between the transmitter and receiver systems is achieved and the unknown parameters are estimated simultaneously. Based on the Lyapunov stability theory, the controllers and corresponding parameters update rule are constructed to achieve generalized modified projective synchronization between the transmitter and receiver system with uncertain parameters. The original information signal can be recovered successfully through some simple operations by the estimated parameter. The message signal can be finally recovered by the identified parameter and the corresponding demodulation method. Numerical simulations are performed to show the validity and feasibility of the presented secure communication scheme.

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