1. Department of Electrical and Computer Engineering, Dhofar University, Salalah, Oman
2. LISI Laboratory, INSAT, University of Carthage, B.P. 676, 1080, Tunis Cedex, Tunisia
3. Department of Mechanical and Mechatronics Engineering, Dhofar University, Salalah, Oman
4. Department of Electrical Engineering, University of Tunis, ENSIT, Tunis, Tunisia