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 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, Molecular and Nanoscale Communications, Stochastic Processes in Biology and Wireless Security.
He is author or co-author of more than 450 technical papers published in scientific journals and presented at international conferences. He is also co-author of the book “Advanced Optical Wireless Communications Systems”, Cambridge Publications, 2012.
He was Editor in IEEE Transactions on Communications, Senior Editor of IEEE Communications Letters, 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 one of the highly-cited researchers across all areas of Electrical Engineering, recognized as 2015 and 2016 Thomson Reuters highly-cited researcher.