ACM SIGMOBILE - Mobihoc 2011 - Paris France - May 16-20

MobiHoc 2011 Tutorials


Two distinguished tutorials will be held on Monday May 16, 2011: They will be held in the Tutorials (and Workshops) Venue

Random Matrix Theory for Wireless Communications

by Mérouane Debbah
Monday May 16, 2011 - 9h-12h

The asymptotic behaviour of the eigenvalues of large random matrices has been extensively studied since the fifties. One of the first related result was the work of Eugène Wigner in 1955 who remarked that the eigenvalue distribution of a standard Gaussian hermitian matrix converges to a deterministic probability distribution called the semi-circular law when the dimensions of the matrix converge to infinity. Since that time, the study of the eigenvalue distribution of random matrices has triggered numerous works, in the theoretical physics as well as probability theory communities. However, as far as communications systems are concerned, until the mid 90's, intensive simulations were thought to be the only technique to get some insight on how communications behave with many parameters. All this changed in 1997 when large system analysis based on random matrix theory was discovered as an appropriate tool to gain intuitive insight into communication systems. In particular, the self-averaging effect of random matrices was shown to be able to capture the parameters of interest of communication schemes. The results led to very active research in many fields such as, just to name a few:

  • MIMO Broadcast systems with a large large number of users
  • MIMO (and Network MIMO) systems with a large number of users
  • Channel modelling of wireless communication systems
  • Flexible networks

The tutorial is intended to give a comprehensive overview of random matrices and their application to the analysis and design of communication systems. As communication systems become more and more complex, the tutorial should provide the attendees with appropriate mathematical tools to cope with the analysis and design of suited schemes.

Mérouane Debbah was born in Madrid, Spain. He entered the Ecole Normale Supérieure de Cachan (France) in 1996 where he received his M.Sc and Ph.D. degrees respectively in 1999 and 2002. From 1999 to 2002, he worked for Motorola Labs on Wireless Local Area Networks and prospective fourth generation systems. From 2002 until 2003, he was appointed Senior Researcher at the Vienna Research Center for Telecommunications (FTW) (Vienna, Austria) working on MIMO wireless channel modeling issues. From 2003 until 2007, he joined the Mobile Communications department of the Institut Eurecom (Sophia Antipolis, France) as an Assistant Professor. He is presently a Professor at Supelec (Gif-sur-Yvette, France), holder of the Alcatel-Lucent Chair on Flexible Radio. His research interests are in information theory, signal processing and wireless communications. He is an Associate Editor for IEEE Transactions on Signal Processing. Mérouane Debbah is the recipient of the "Mario Boella" prize award in 2005, the 2007 General Symposium IEEE GLOBECOM best paper award, the Wi-Opt 2009 best paper award, the 2010 Newcom++ best paper award as well as the Valuetools 2007,Valuetools 2008 and CrownCom2009 best student paper awards. He is a WWRF fellow.

Designing Ad Hoc Networking with Application Constraints

by Christophe Guettier
Monday May 16, 2011 - 14h-17h

Most of the open litterature considers Mobile Ad Hoc Networking (MANET) as an easy approach to enable mobile networking without fixed infrastructure. Actually, MANET Routing and Access protocols get rid of networking infrastructure constraints and yield attractive technologies for application developpers. However, these applications are introducing other sorts of constraint, derived from user requirements, radio management or the integration environment. Furthermore, mobile networking has to provide some Quality/Guarantee of Service (reliability, security, delays, ...) while dealing with a complex operational environment. Therefore, and to many respects, ad hoc networking favours distributed solutions instead of classical engineering approaches that generally tend to centralise network control.

This tutorial adresses scientists, engineers and project managers involved or interested in the development of MANET applications. A review of traffic and network engineering techniques is provided, emphasizing issues on traffic admission, routing, access and cross-layering constraints. Example of solution paradigms, applied to various classes of well known MANET protocols (proactive, reactive, ...) are investigated. Differences with existing traffic engineering practices, known in infrastructure networking are also highlighted. Practical application examples (from various domains: defense, disaster response and space exploration), that focus on network centric and collaborative functionalities, are also illustrating the tutorial.

Christophe Guettier obtained his PhD in Computer Science from the Ecole des Mines de Paris in 1997 with the support of Thomson-CSF/Corporate Research Lab. The thesis addressed design optimization for high performance sensors (airborne radars, submarine sonars, surveillance / tracking radars). From 1998 to 2001, as R&D director of the SME Axlog Ingenierie, he led research and development for Dassault Aviation and European Space Agency on avionics and swarming autonomous navigation. In 2001, he is recruited by Xerox Palo Alto Research Center (California) as research fellow to develop Network Embedded System Technologies for the Air Force Research Lab in partnership with Boeing. In 2002, he joined Imperial College London as research scientist, applying optimization techniques for routing and aerospace payload design. From 2004, in SAGEM defense and security, he managed projects on network centric warfare and led operational experiments Phoenix 2007 and 2008. In charge of business development for information and communication system, Christophe Guettier has 30 publications in conference and journals of these areas and delivered a European / US Patent on design optimization.