1. Wireless Communication Centre, Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Johor Bahru, Malaysia
2. Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Parit Raja, Johor, Malaysia
3. School of Electrical and Electronics Engineering, Yonsei University, Seodaemun-gu, Seoul, South Korea
4. Faculty of Electrical Engineering, King Saud University, Riyadh, Saudi Arabia
5. College of Engineering, Muzahimiyah Branch, King Saud University, Riyadh, Saudi Arabia
6. Fakulti Kejuruteraan Elektrik, Universiti Teknikal Malaysia Melaka (UTeM), Durian Tunggal, Malaysia