1. Centre for Communication Services Convergence Technologies, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Malaysia
2. Department of Electrical Engineering, College of Engineering, University of Babylon, Babylon, Iraq
3. Faculty of Engineering, Sohar University, PO Box 44, PCI 311 Sohar, Oman
4. School of Computer Engineering, University Malaysia Perlis, Kangar, Malaysia