1. Electronics & Communiticaon Technology Department, College of Electrical and Electronics Technology - Benghazi, Benghazi, Libya
2. Department of Computer Networks and Communications, University of Benghazi, Benghazi, Libya
3. Electrical and Electronics Engineering Department University of Benghazi Benghazi, Libya
4. Electrical and Electronic Engineering Department, Universiti Kebangsaan Malaysia, Bangi Selangor, Malaysia