Localizing Mobile Nodes in Fixed Infrastructure and Ad Hoc Networks

Speaker:	Dr. Gergely V. ZÁRUBA
		Department of Computer Science and Engineering
		University of Texas, Arlington

Title:		"Localizing Mobile Nodes in Fixed Infrastructure and Ad
		 Hoc Networks"

Date:		3 February, 2009

Time:		4:00pm - 5:00pm

Venue:		Lecture Theatre F
		(Leung Yat Sing Lecture Theatre, near lift nos. 25/26)
		HKUST

Abstract:

This talk will be focusing on finding the location (localizing) of mobile
nodes in both infrastructure (e.g., WLAN, static mesh) and
infrastructure-less (e.g., ad hoc, sensor) networks. Although GPS is a
valid localization technology for outdoors its cost, and power
requirements may prohibit its constant use for pervasive applications or
sensor networks. Furthermore, GPS usually does not work in indoor
environments nor does it help in relaying location information to other
nodes. For finding location of users or other entities in indoor
environments, simple received signal strength based multilateration
techniques have been proposed in the literature but they suffer from a
coverage problem, as well as they do not take past movement history into
account when estimating current location. Other, more appropriate
filtering techniques (e.g., Kalman filters) have also been proposed but
lack properties that are needed in indoor environments. In this talk we
will be looking into the use of Monte Carlo filtering (also known as
"particle filtering") to be used in determining the location of nodes in
infrastructure and (time permitting) ad hoc network environments.


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Biography:

Gergely V. Záruba (pronounce: Ghehrgay Zaruba) is an Associate Professor
of Computer Science and Engineering at The University of Texas at
Arlington (CSE@UTA). He has received the Ph.D. degree in Computer Science
working with Dr. Imrich Chlamtac from The University of Texas at Dallas in
2001, and the M.S. degree in Computer Engineering from the Technical
University of Budapest, Department of Telecommunications and Telematics,
in 1997. Dr. Zaruba's research interests include wireless localization,
assistive technologies, wireless networks, algorithms, and protocols, and
performance evaluation. He has served on many organizing and technical
program committees for leading conferences and has guest edited journals.
He is a member of the IEEE and its Communications Society.