1. Centre for Wireless Innovation, ECIT Institute, Queen’s University Belfast, Belfast, U.K
2. Department of Electrical and Computer Engineering, Center for Cyber-Physical Systems, Khalifa University, Abu Dhabi, United Arab Emirates
3. Department of Signal Theory, Networking and Communications, University of Granada, Granada, Spain
4. Wireless Technology Laboratory, School of Electrical and Computer Engineering, University of Campinas, Campinas, Brazil