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Séminaire dirigé par Monsieur Matthieu CRUSSIÈRE






Sup'Com organise un séminaire intitulé « Application of Time Reversal Principles to Wireless Communications: from Single-User SISO to Multiple-User Large Scale MIMO Scenarios », dirigé par Monsieur Matthieu CRUSSIÈRE qui aura lieu le 10 novembre 2015 à l’amphi II








Associate Professor at INSA RENNES



Matthieu CRUSSIÈRE received the Ph.D. degree in electrical engineering from the National Institute of Applied Sciences (INSA), Rennes, France, in 2005. He then joined the Department of Telecommunications and Electronic Engineering at INSA as an Associate Professor and was involved in the Digital Communication Department of the Electronics and Telecommunications Institute of Rennes (IETR), France. In 2013, he became a research fellow at the Institute of Research and Technology (IRT) B-COM in Rennes. His main research interests lie in digital communications and signal processing techniques. His first works were focused on the optimization of high-bit rate power-line communications using hybrid multicarrier and spread-spectrum waveforms. These last years, his research activities have been dedicated to adaptive resource allocation, cross-layer mechanism and system design in the context of multicarrier and multiple antenna systems. He is author or co-author of more than 80 technical papers in international conferences and journals. He was involved in several European and French national research projects in the field of power-line communications, broadcasting systems, ultra wideband and mobile radio communications. He has been involved in the technical program committee of different IEEE conferences, including ICT, PIMRC and VTC. He was TPC chair and co-organizer of the 3rd IWCLD workshop, co-sponsored by IEEE.




Within the wide landscape of signal processing techniques for wireless communications, Time Reversal (TR) is today considered as one of the very promising strategies for green communications and multi-user multiplexing in particular thanks to its good spatial and temporal focusing properties. Firstly introduced for ultrasound and underwater acoustic waves, TR has more recently been applied to electromagnetic waves in the context of wireless communications. TR turns out to be a simple and efficient pre-filtering technique suitable for low power transmissions, multiple user discrimination and also leads to low-complexity receivers. In this tutorial, we intend to provide a comprehensive and in-depth overview on the TR paradigm, from theoretical aspects to practical issues. We will first give the necessary background to understand the physical nature of the TR concept, based on wave propagation and Maxwell theory, and will then give and discuss the analytical and simulation tools that have to be used from a digital communication and signal processing point of view in order to quantify the performance of TR, both in terms of system capacity and bit error rate. On this basis, a critical analysis of the state of the art of TR for wireless communications will be exposed, from UWB (Ultra Wideband) systems to multiantenna narrow band systems. We will address various system architectures from a low to a large number of transmit antennas and for single-user and multiple-user transmission scenarios.


Throughout this tutorial, we will be giving the latest insights on TR, highlighting the interrelations or the possible hybridizations with other very popular schemes such as multicarrier modulations, multiple antenna systems, beamforming or spatial multiplexing, and massive or large scale antenna systems. We will provide all the material to better understand the potential of TR in the perspective of the design of future wireless communication networks. The session will end with the presentation of a proof of concept study, exhibiting the technical challenges for the implementation of TR-based schemes in real systems.