Emerging Topics in 5G Networks: Simultaneous Wireless Information and Energy Transfer
Presenters: Marco Maso (Mathematical and Algorithmic Sciences Lab, Huawei France Research Center, France), Marco Di Renzo (Paris-Saclay University / CNRS, France), Samir M. Perlaza (INRIA, France), Bruno Clerckx (Imperial College London, United Kingdom).
Date: Monday, December 04, 14:00 – 17:30
Abstract: Efficient energy utilization is among the main challenges of future communication networks to extend their lifetime and reduce operating costs. Networks are generally populated by battery-dependent devices. In some cases, such dependency is relevant at a point in which the battery lifetime often represents a bottleneck for the network lifetime as well. Within this context, wireless energy transmission becomes an alternative to eliminate the need for in-situ battery recharging. Nonetheless, for decades, the traditional engineering perspective was to design separately information transmission systems and energy transmission systems. However, this approach has been shown to be suboptimal. Indeed, a radio frequency (RF) signal carries both energy and information. From this standpoint, a variety of modern wireless systems and proposals question the conventional separation approach and suggest that RF signals can be simultaneously used for information and energy transmission. This tutorial starts from this observation and aims at familiarizing the attendees with the new communication paradigm of simultaneous wireless information and energy transfer (SWIET) in wireless networks, and its associated challenges. The tutorial is divided into four parts. In first part, an historical and technical introduction to wireless energy transfer is given. The second part focuses more specifically on communication techniques and fundamental limits of SWIET, both for point-to-point and multi-user scenarios. The third part extends the discussion to network-related aspects, and presents the modeling and analysis of energy neutral network. Finally, the fourth part is devoted to the introduction of the concept self-sustainable systems and energy recycling strategies, with practical examples.