Demosthenes Vouyioukas (m) received a five-year Diploma in Electrical and Computer Engineering (1996) and a Ph.D. degree (2003) in Electrical and Computer Engineering both from the National Technical University of Athens (NTUA). He has also received a Joint Engineering-Economics M.Sc. from NTUA (2004). He is currently Associate Professor at the Department of Digital Systems, University of Piraeus, Greece. His research interests include mobile and wireless communication systems, channel characterization and propagation models, performance modeling of wireless networks, cooperative wideband systems with relays, UWB indoor localization techniques, next-generation mobile and satellite networks, MIMO, and 5G technologies. In this area, he has over 150 publications in scientific journals, books, book chapters, and international conference proceedings.