1. Institute of Technology of Cambodia,Dept. Telecom. and Network Eng.,Phnom Penh,Cambodia
2. Institute of Technology of Cambodia,Dept. Elec. and Energy Eng.,Phnom Penh,Cambodia
3. Univ. Grenoble Alpes,Gipsa-Lab,Grenoble,France
4. Univ. Claude Bernard Lyon 1,Dépt Mécanique,Lyon,France