George K. Karagiannidis

RF versus Lightwave Wireless Power Transfer: Research challenges and Future trends

ABSTRACT
Wireless power transfer (WPT) is regarded as a disruptive technological paradigm to prolong the lifetime of energy-constrained devices, such as the ones used in the Internet-of-Things (IoT) applications. Far-field WPT is based on the transmission/reception of propagating electromagnetic waves, including radio frequency (RF) and light waves.  However, as it will be highlighted in this talk, lightwave WPT is fundamentally different to RF, due to the divergent channels characteristics, transmission/reception equipment, and energy harvesting (EH) model, among others. Lightwave WPT creates many new challenges, including the increase of the EH efficiency, the optimal design of the optical devices, and the support of multiuser scenarios, which call for an interdisciplinary approach. Moreover, simultaneous lightwave information and power transfer (SLIPT) will be presented and compared to the corresponding RF-based technology, while future research directions will also be discussed.

BIOGRAPHY
George K. Karagiannidis (M’96-SM’03-F’14) was born in Pithagorion, Samos Island, Greece. He received the University Diploma (5 years) and PhD degree, both in electrical and computer engineering from the University of Patras, in 1987 and 1999, respectively. From 2000 to 2004, he was a Senior Researcher at the Institute for Space Applications and Remote Sensing, National Observatory of Athens, Greece. In June 2004, he joined the faculty of Aristotle University of Thessaloniki, Greece where he is currently Professor in the Electrical & Computer Engineering Dept. and Director of Digital Telecommunications Systems and Networks Laboratory.  He is also Honorary Professor at South West Jiaotong University, Chengdu, China.

His research interests are in the broad area of Digital Communications Systems and Signal processing, with emphasis on Wireless Communications, Optical Wireless Communications, Wireless Power Transfer and Applications, Communications for Biomedical Engineering, Stochastic Processes in Biology and Wireless Security.

He is the author or co-author of more than 450 technical papers published in scientific journals and presented at international conferences. He is also author of the Greek edition of a book on “Telecommunications Systems” and co-author of the book “Advanced Optical Wireless Communications Systems”, Cambridge Publications, 2012.

Dr. Karagiannidis has been involved as General Chair, Technical Program Chair and member of Technical Program Committees in several IEEE and non-IEEE conferences. In the past, he was Editor in IEEE Transactions on Communications, Senior Editor of IEEE Communications Letters, Editor of the EURASIP Journal of Wireless Communications & Networks and several times Guest Editor in IEEE Selected Areas in Communications. From 2012 to 2015 he was the Editor-in Chief of IEEE Communications Letters.

Dr. Karagiannidis is IEEE Fellow and one of the highly-cited authors across all areas of Electrical Engineering, recognized as 2015, 2016 and 2017 Web-of-Science Highly-Cited Researcher.