1. L. Rakotondrainibe:
Institute of Electronics and Telecommunications of Rennes, IETR UMR CNRS 6164, INSA, 20 Avenue des Buttes de Coesmes, CS 14315, 35043 Rennes cedex, France
2. Y. Kokar:
Institute of Electronics and Telecommunications of Rennes, IETR UMR CNRS 6164, INSA, 20 Avenue des Buttes de Coesmes, CS 14315, 35043 Rennes cedex, France
3. G. Zahira:
Institute of Electronics and Telecommunications of Rennes, IETR UMR CNRS 6164, INSA, 20 Avenue des Buttes de Coesmes, CS 14315, 35043 Rennes cedex, France
4. G. El-Zein:
Institute of Electronics and Telecommunications of Rennes, IETR UMR CNRS 6164, INSA, 20 Avenue des Buttes de Coesmes, CS 14315, 35043 Rennes cedex, France