1. Wireless Communication Centre, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
2. Department of Electrical Engineering, Faculty of Engineering, University of Kufa, Kufa, Iraq
3. Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Malaysia
4. Department of Electrical Engineering, University of Tabuk, Tabuk, Saudi Arabia
5. Department of Electrical Engineering, Umm Al-Qura University Makkah, Mecca, Saudi Arabia