1. Department of Electrical Engineering, Faculty of Engineering Bayero University Kano Kano Nigeria
2. Wireless Communication Centre (WCC) Faculty of Electrical Engineering University of Technology Malaysia Skudai Malaysia
3. Institute of Electronics and Telecommunications of Rennes (IETR) Université de Rennes I Rennes France
4. Department of Electronics and Telecommunications Engineering Ahmadu Bello University Zaria Zaria Nigeria