Séminaire ICI : Samir M. Perlaza

Titre du séminaire et orateur

Feedback in Distributed Wireless Networks.
Samir M. Perlaza, INRIA Lyon and Princeton University, NJ, USA

Date et lieu

Jeudi 12 juin 2014, 14h15.
ENSEA, salle 384.


In this talk, the use of output feedback in distributed wireless networks is discussed using tools from information theory and game theory. In particular, the two-user Gaussian decentralized interference channel (DIC) is adopted as a study case in which a transformative role of feedback emerges: harnessing interference as side information. This allows us to show that thanks to the use of feedback, Pareto optimal operating points are achievable even in fully decentralized networks. Finally, we show that the existence of a feedback link is not a sufficient condition for improving the performance, i.e., achievable transmission rates at a Nash equilibrium, with respect to the case in which feedback is not available. Indeed, particular conditions are required for feedback to be beneficial in DICs. These conditions are presented using illustrative examples to provide useful insight about these results.


Samir M. Perlaza is a research scientist with the Institut National de Recherche en Informatique et en Automatique (INRIA), France, and a visiting research collaborator at the department of electrical engineering at Princeton University, NJ, USA. He received the M.Sc. and Ph.D. degrees from Ecole Nationale Supérieure des Télécommunications (Telecom ParisTech), Paris, France, in 2008 and 2011, respectively. Previously, from 2008 to 2011, he was a Research Engineer at France Télécom - Orange Labs (Paris, France) and he has held academic appointments at the Alcatel-Lucent Chair in Flexible Radio at Supélec (Gif-sur-Yvette, France); at Princeton University (Princeton, NJ) and at the University of Houston (Houston, TX). His research interests lie in the overlap of signal processing, information theory, game theory and wireless communications.  Dr. Perlaza was a recipient of an Alban Fellowship of the European Union in 2006 and the Best Student Paper Award in Crowncom in 2009.