Toronto Networking Seminar
Organized by Department of Computer Science and Department of Electrical and Computer Engineering, University of Toronto
Cross-Layer Design of All-Optical Networks Incorporating Crosstalk Effects
Yvan Pointurier
Department of Electrical and Computer Engineering
McGill University
Date: Friday, February 8, 2pm
Location: BA 1220
Abstract:
The performance of current optical networks is inherently limited by the
speed of electronic components, and especially the electronic switches;
a new generation of optical networks, referred to as all-optical
networks, overcome this limitation by switching data entirely optically
using all-optical crossconnects (OXCs). However, all-optical networks
are prone to phenomena that are unknown to current optical networks. For
instance, OXCs are subject to optical leaks, resulting in unwanted
components called node crosstalk being added to transmitted signals.
Realizing that crosstalk can be a serious impairment for proper network
operation, we propose to mitigate physical layer impact (including node
crosstalk) at call admission time using specifically designed QoS-aware
Routing and Wavelength Assignment (RWA) algorithms (a network-layer
technique). Our new RWA algorithms choose a route and a wavelength for
incoming calls in all-optical networks (viewed as circuit-switched
networks) depending on the physical-layer state, making RWA algorithms
and all-optical networks design a cross-layer issue.
We show that our new RWA algorithms outperform traditional RWA
algorithms while exhibiting additional interesting properties. To
decrease the time to evaluate QoS-aware RWA algorithms, we also present
an analytical technique to evaluate the performance of a class of RWA
algorithms incorporating multiple physical layer impairments including
node crosstalk.
Bio:
Yvan Pointurier received a Diplome d'Ingenieur from Ecole Centrale
de Lille (France) and a M.S. degree from the Department of Computer
Science at the University of Virginia (USA) in 2002 (advisor: Jorg
Liebeherr), and a Ph.D. from the Charles L. Brown Department of
Electrical and Computer Engineering in 2006, also at the University of
Virginia (advisor: Maite Brandt-Pearce).
He is currently a Postdoctoral Fellow in the Department of Electrical
and Computer Engineering at McGill University in Montreal, Canada.
His research interests span design, optimization and monitoring of
networks in general, and optical networks in particular.
Host of the talk
Jörg Liebeherr (jorg@comm.toronto.edu)
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