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Prof.
Branimir Vojcic
Energy-aware and Link-adaptive
Routing Metrics for
Ultra Wideband Sensor Networks
Wireless Sensor Networks are energy
constrained since sensors operate with limited battery
capacity. Thus, energy consumption is one of the most
critical issues in the design of routing protocols. In
addition, the link quality needs to be taken into
account in the route decision for a wireless multihop
network in order to efficiently exploit the inherent
spatial diversity. In this talk we consider energy-aware
and link-adaptive routing strategies for a UWB (Ultra
Wide Band) sensor networks. We utilizes the ranging
capabilities offered by UWB and employ adaptive
modulation to take advantage of favorable link
conditions. Different routing
metrics are proposed based on the
availability of sensor node’s location, link quality and
next hop battery capacity information. These routing
metrics integrate the measure of next hop remaining
battery capacity with the throughput performance
measures, Maximum Forward Progress (MFP) or Maximum
Information Progress (MIP). The effectiveness of these
metrics is evaluated in different simulation scenarios
in terms of network throughput and lifetime for both
random and grid sensor network topologies
Prof.
Branimir Vojcic,
Department of
Electrical and Computer Engineering at the
George Washington
University
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Prof.
Alberto Sangiovanni-Vincentelli
Platform-based Design of Wireless Sensor Networks: the
Metropolis Approach
Wireless Sensor Networks are a very active area
of research. Their applications in all
industrial and personal activities are
compelling. The evolution of IC manufacturing
and design technology is at the basis of the
rapid advances in this field. After a brief
overview of wireless technology and its use, I
will focus on the challenges that a designer has
to face to develop applications on a wireless
network. A design methodology will be presented
that is based on a rigorous abstraction and
refinement process (platform-based design) and a
proposal for the standardization of appropriate
APIs will be introduced. I will then outline a
design flow that spans application specification
to implementation based on the Metropolis
framework, a general environment for system
level design. The framework is centered on
rigorous semantics and orthogonalization of
concern principles that allow separating
communication from computation, functionality
from architecture and optimizing the final
implementation with respect to a set of complex
constraints and requirements
Prof. Alberto Sangiovanni-Vincentelli
The Edgar L. and Harold H.
Buttner Chair of Electrical Engineering and
Computer Science
University of California at
Berkeley
Co-founder, Chief Technology
Advisor and Member of the Board, Cadence Design
Systems
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Prof. Rafael Pérez Jiménez
A Comparison Between
Impulse Radio UWB and Wireless Optical Diffuse Systems
for Sensor Networking
In the last years, UWB has become one of
the most promising technologies for radio networking and
sensor interconnection. One of the UWB techniques is
impulse radio, offering large available transmission
speed over short range distances. At the same time,
wireless optical communications offers an alternative to
classical radio systems in some especial environments
which are severely affected by EM interferences as
nuclear plants, hospitals or in-board systems. They do
not require legal procedures for frequency assignment
and the cost of the transceivers is usually lower than
in radio-frequency. Both technologies share some
characteristics as the absence of a carrier, the short
duration of the pulse and the amount of bandwidth
available. In this dissertation we will consider using
similar strategies for medium-access control, coding and
pulse conformation in both scenarios, we shall also
explore other similitudes on the present standards for
both technologies in order to study possible future
concurrency.
Rafael Perez-Jimenez (Madrid, Spain,
1965) obtained his M.S. degree at the Polytechnic
University of Madrid in 1991, and his Ph.D. in
Telecommunications (Honors, Best Ph.D. Thesis award), in
1995 from the University of Las Palmas, Spain; where he
is currently a Full Professor of Communications at the
Signal and Communications Department, Telecommunications
School. He has held visiting positions at the University
of California-Davis, the Polytechnic University of
Madrid and the Università degli Studi di Roma “La
Sapienza”. His research interests include optical
wireless communications, wireless personal area networks
and free space optical communications. He has
participated on several research projects with the
Spanish research administration and communication
companies from 1991. |
