ComNum - Seminars

September,23 2019 [ComNum] New Paradigms for 6G Wireless Communications

Seminar Author(s):

Andrea Goldsmith

Seminar description:

at 10.15apm in Amphi Grenat

Abstract:  

Wireless technology has enormous potential to change the way we live, work, and play over the next several decades. Future wireless networks will support 100 Gbps communication between people, devices, and the “Internet of Things,” with high reliability and uniform coverage indoors and out. New architectures including edge computing will drastically enhance efficient resource allocation while also reducing latency for real-time control. The shortage of spectrum will be alleviated by advances in massive MIMO and mmW technology, and breakthrough energy-efficiency architectures, algorithms and hardware will allow wireless networks to be powered by tiny batteries, energy-harvesting, or over-the-air power transfer. There are many technical challenges that must be overcome in order to make this vision a reality. This talk will describe our recent research addressing some of these challenges, including new modulation and detection techniques robust to rapidly time-varying channels, blind MIMO decoding strategies, machine learning equalization and source-channel coding, as well as “fog”-optimization of resource allocation in cellular systems.

Biography:

Andrea Goldsmith is the Stephen Harris professor in the School of Engineering and a professor of Electrical Engineering at Stanford University. She co-founded and served as Chief Technical Officer of Plume WiFi  and of Quantenna (QTNA), and she currently serves on the Board of Directors for Crown Castle (CCI) and Medtronic (MDT). She has also held industry positions at Maxim Technologies, Memorylink Corporation, and AT&T Bell Laboratories. Dr. Goldsmith is a member of the National Academy of Engineering and the American Academy of Arts and Sciences, a Fellow of the IEEE and of Stanford, and has received several awards for her work, including the IEEE Sumner Award, the ACM Athena Lecturer Award, the IEEE Comsoc Edwin H. Armstrong Achievement Award, the National Academy of Engineering Gilbreth Lecture Award, the Women in Communications Engineering Mentoring Award, and the Silicon Valley/San Jose Business Journal’s Women of Influence Award. She is author of the book ``Wireless Communications'' and co-author of the books ``MIMO Wireless Communications'' and “Principles of Cognitive Radio,” all published by Cambridge University Press, as well as an inventor on 29 patents. Her research interests are in information theory and communication theory, and their application to wireless communications and related fields. She received the B.S., M.S. and Ph.D. degrees in Electrical Engineering from U.C. Berkeley.

Contact(s):

Wigger Michele

September,17 2019 6Gwireless: Wireless Networks Empowered by Reconfigurable Intelligent Surfaces

Seminar Author(s):

Marco Di Renzo

L2S, CentraleSupelec

Seminar description:

Mardi 17 septembre, 14H, Télécom Paris, Amphi B312, 46 rue Barrault, Paris 13

 Future wireless networks are expected be more than allowing people, mobile devices, and objects to communicate with each other. Future wireless networks will constitute a distributed intelligent communications, sensing, and computing platform. Small cells, Massive MIMO, millimeter-wave communications are three fundamental approaches to meet the requirements of 5G wireless networks. Their advantages are undeniable. The question is, however, whether these technologies will be sufficient to meet the requirements of future wireless networks that integrate communications, sensing, and computing in a single platform. Wireless networks, in addition, are rapidly evolving towards a softwaredefined design paradigm, where every part of the network can be configured and controlled via software. In this optimization process, however, the wireless environment remains an uncontrollable factor: It remains unaware of the communication process undergoing within it. Apart from being uncontrollable, the environment has a negative effect on the communication efficiency: signal attenuation limits the network connectivity, multi-path propagation results in fading phenomena, reflections and refractions from objects are a source of uncontrollable interference. In the recent period, a brand-new technology, which is referred to as Reconfigurable Intelligent Surfaces (RISs), was brought to the attention of the wireless community. The wireless future that can be envisioned by using this technology consists of coating every environmental object with man-made reconfigurable surfaces of electromagnetic material (software-defined reconfigurable metasurfaces) that are electronically controlled with integrated electronics and wireless communications. In contrast to any other technology currently being used in wireless networks, the distinctive characteristic of the RISs consists of making the environment fully controllable by the telecommunication operators, by allowing them to shape and control the electromagnetic response of the objects distributed throughout the network. The RISs are a promising but little understood technology that has the potential of fundamentally changing how wireless networks are designed today. In this talk, we will discuss the potential of RISs in 6G wireless networks.

 

Contact(s):

Sibille Alain

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