CS Colloquium Series @ UCY
Department of Computer Science - University of Cyprus
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Colloquium Coordinator: Demetris Zeinalipour
Colloquium: Cross Layer Rate Adaptation in Wireless Ad-hoc Networks, Dr. Emmanouil G. Spanakis (University of Cyprus, Cyprus), Monday, October 4th, 2010, 14:00-15:00 EET.
The Department of Computer Science at the University of Cyprus cordially invites you to the Colloquium entitled:
Cross Layer Rate Adaptation in Wireless Ad-hoc Networks
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Speaker: Dr. Emmanouil G. Spanakis |
Abstract:
In a wireless network, with nodes sharing the same spectrum,
each transmission is affected from, and affects, all other transmissions
in range. When multiple uncoordinated links share a common medium the
effect of interference is a crucial limiting factor for network
performance. The general objective of this work is to present an in-depth
analysis of how cross layer techniques can be used in the design and study
of wireless ad hoc networks. We focus on finding how adapting various
parameters of the telecommunication system can allow concurrent
transmissions, minimize interference, enhance network throughput, maximize
individual link data rates, and optimally utilize the network resources
for all competing transmissions. Initially, we study the transmission rate
regions for a simplified wireless network with a given degree of
interference, considered as noise, and individual power constrains. We
define the necessary conditions that maximize the system’s aggregate rate
and provide criteria under which simultaneous link operation outperforms
timesharing. Then, we study the interference exhibited at the center of a
circular networking area and define the interference limited communication
range to be the critical communication region around a receiver within
which a successful communication link can be formed. Finally, we examine
the multicast throughput of a group and show its dependence on the
transmission rate.
Short Bio:
Emmanouil G. Spanakis is a post-doctoral fellow at the Computer
Science department in University of Cyprus under the Marie Curie Transfer
of Knowledge program. He holds a B.Sc. and a M.Sc. in Computer Science and
he received his Ph.D degree in Computer Science in 2009 from the
University of Crete, Heraklion, Greece. Since 1998, he has been a member
of the Telecommunications and Networks Laboratory and the Biomedical
Informatics Laboratory of FORTH- ICS as a research intern in many
collaborative R&D projects in the area of wireless communication networks,
wireless ad hoc networks and ambient intelligence e-health environments.
He has expertise and specialisation on issues of the wider scientific
domain of wireless communication networks and computational medicine, and
in particular on cross layer design in wireless ad-hoc networks, wireless
interference channel under SINR constrains, performance and analysis of
mobile ad-hoc routing protocols, wireless network measurements analysis as
well as in biomedical informatics, wireless medical sensors and ambient
e-health and m-health related services.
Sponsor: The CS Colloquium Series is supported by a generous donation from  |