 |
Plenary Talk 4
Distributed Decision Techniques in Wireless Sensor Networks
Sergio Barbarossa
University of Rome “La Sapienza”
Tuesday, June 23rd
14:00 - 15:00
Teatro del Pavone
Abstract
A clear trend in modern networked sensing or communication systems is the search for decentralized strategies endowing the system with the capability of taking autonomous decisions without the intervention of a central control node. Decentralizing decisions improve the resilience of the system with respect to node failure or congestions around the sink nodes. Two important motivating applications, specifically addressed in this talk, are wireless sensor networks and cognitive radio ad hoc networks. In these contexts, the word decision encompasses problems as diverse as cooperative sensing, detection and parameter estimation, communication protocols, motion coordination, network topology control, etc. The goal of this talk is to show how the previous problems can be solved in a decentralized form, with minimum exchange of information between neighboring nodes only. It will be shown, for example, how basic signal processing tools, like signal subspace projection techniques, can be put in a decentralized form, taking into account at the same time the reliability of the decisions, the network topology and the energy necessary for the whole network to reach the final decision, with the prescribed accuracy. The main theme of the talk is to show that, even though the results are only preliminary, a proper cross-fertilization between basic methodological tools such as game theory, complex graphs, and signal processing can provide a really added value in devising innovative autonomous decision strategies, directly put in a decentralized form. The goal is to emphasize the role of interdisciplinary approaches in the design of complex systems, with the hope of triggering the interest of young researchers towards a multidisciplinary approach to build their cultural background as well as to achieve further research developments.
Biography
 Sergio Barbarossa (S'82M'88) received the electrical engineering degree in 1984 and the Ph.D. degree in electrical engineering in 1988, both from the University of Rome "La Sapienza," Rome, Italy. He joined the Radar System Division of Selenia in 1985, as a Radar System Designer. In 1987, he was a Research Engineer at the Environmental Research Institute of Michigan (ERIM), Ann Arbor, MI. From 1988 until 1991, he was an Assistant Professor at the University of Perugia. In November 1991, he joined the University of Rome "La Sapienza," where he is currently a Full Professor and Director of graduate studies. He has held positions as Visiting Scientist and Visiting Professor at the University of Virginia (1995, 1997), the University of Minnesota (1999), and the Polytechnic University of Catalonia (2001, 2008). He has been one of the primary investigators in several EU projects on multiantenna systems, sensor networks and cognitive radios.
From 1998 to 2004, he has been a member of the IEEE Signal Processing for Communications Technical Committee. He served as an Associate Editor of the IEEE TRANSACTIONS ON SIGNAL PROCESSING from 1998 to 2001 and from 2004 to 2006. He received the 2000 IEEE Best Paper Award from the IEEE Signal Processing Society, for a co-authored paper in the area of signal processing for communications. He is the author of a research monograph on Multiantenna Wireless Communication Systems. His current research interests lie in the areas of cognitive radios and sensor networks.
|
 |
