1. Advanced Communication Engineering (ACE), Centre of Excellence, Faculty Electronic Engineering Technology, University Malaysia Perlis, Kangar, Arau, Perlis, Malaysia
2. Centre for Wireless Communications (CWC), University of Oulu, Oulu, Finland
3. Centre for Advanced Electrical & Electronic System (CAEES) Faculty of Engineering, Built Environment and Information Technology, SEGi University, Petaling Jaya, Selangor, Malaysia
4. Department of Electrical Engineering, Universitas Sumatera Utara, Medan, Indonesia