17. April 2018, 11.00 am
Seminar Room, Wohllebengasse 12-14, 1st floor
The Emergence of Wireless Powered Communication Networks
Prof. Zoran Hadzi-Velkov
Faculty of Electrical Engineering and Information Technologies Ss. Cyril and Methodius University, Skopje
In this talk, we discuss the concept of simultaneous information and power transfer and the emerging wireless powered communication networks. These extremely popular research notions build upon the energy harvesting communications, and promise self-sustainable and everlasting operation of future prevalent “Internet of Things”. We discuss the transmission of radio frequency (RF) energy from an RF source to a device that can harvest and store that energy in a battery. Due to the large attenuation of radio signals during transmission over the air, relatively small amounts of energy can be collected, and therefore the RF source and RF receiver are typically placed at relatively small distances. Despite these physical limitations, the research results confirm that wireless powered communications networks are feasible in practice, as they achieve information rates comparableto those in conventional wireless networks. Unlike conventional networks, nodes in wireless powered networks have a limited amount of energy at a given moment, so the novel communication schemes and protocols must effectively exploit the available energy in order to maximize the network performance.