Campus Event Calendar
Event Entry
New for: D1, D3, D4, D5
What and Who
"Network Coded Wireless Architecture"
Sachin Katti
University of California at Berkeley
SWS Colloquium
Sachin Katti is currently a postdoctoral scholar at U.C.Berkeley. He
recently received his PhD in EECS from MIT in September, 2008. Before
coming to MIT, he received his B.Tech. in Electrical Engineering from
the Indian Institute of Technology, Bombay, in 2003. His dissertation
research focuses on redesigning wireless networks with network coding
as the central unifying design paradigm. The dissertation won the
George Sprowls Award for Best Doctoral Dissertation in EECS at MIT and
has been nominated for the ACM Doctoral Dissertation Award. His work
on network coding was also awarded a MIT Deshpande Center Grant. His
research interests are in networks, wireless communications, applied
coding theory and security.
AG 1, AG 3, AG 4, AG 5, SWS, RG1, MMCI
Expert Audience
English
Note: We use this to send email in the morning.
Date, Time and Location
Monday, 27 April 2009
16:00
60 Minutes
G26
204
Kaiserslautern
Abstract
Wireless is becoming the preferred mode of network access. The
performance of wireless networks in practice, however, is hampered due
to the harsh characteristics of the wireless medium: its shared
broadcast nature, interference, and high error rate. Traditionally,
network designers have viewed these characteristics as problematic,
and tried to work around them. In this talk, I will show how we can
turn these challenges into opportunities that we exploit to
significantly improve performance.
To do so, we use a simple yet fundamental shift in network design. We
allow routers to "mix" (i.e., code) packets' content before forwarding
them. We built three systems, COPE, ANC and MIXIT, which exploit this
network coding functionality via novel algorithms to provide large
practical gains. In this talk, I will discuss COPE and ANC; COPE
exploits wireless broadcast, while ANC exploits strategic interference
to improve throughput.
This work bridges and contributes to two unrelated areas: network
coding and wireless mesh network design. It lays down the algorithmic
framework for using network coding in modern wireless networks, by
designing algorithms which work with the common case of unicast flows
in dynamic and unknown environments. It also provides the first
implementation, deployment and experimental evaluation of network
coding. For wireless mesh networks, it shows how the framework of
network coding allows us to profitably harness the inherent wireless
characteristics. This union ultimately allows us to deliver a
several-fold increase in wireless throughput.
performance of wireless networks in practice, however, is hampered due
to the harsh characteristics of the wireless medium: its shared
broadcast nature, interference, and high error rate. Traditionally,
network designers have viewed these characteristics as problematic,
and tried to work around them. In this talk, I will show how we can
turn these challenges into opportunities that we exploit to
significantly improve performance.
To do so, we use a simple yet fundamental shift in network design. We
allow routers to "mix" (i.e., code) packets' content before forwarding
them. We built three systems, COPE, ANC and MIXIT, which exploit this
network coding functionality via novel algorithms to provide large
practical gains. In this talk, I will discuss COPE and ANC; COPE
exploits wireless broadcast, while ANC exploits strategic interference
to improve throughput.
This work bridges and contributes to two unrelated areas: network
coding and wireless mesh network design. It lays down the algorithmic
framework for using network coding in modern wireless networks, by
designing algorithms which work with the common case of unicast flows
in dynamic and unknown environments. It also provides the first
implementation, deployment and experimental evaluation of network
coding. For wireless mesh networks, it shows how the framework of
network coding allows us to profitably harness the inherent wireless
characteristics. This union ultimately allows us to deliver a
several-fold increase in wireless throughput.
Contact
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Video Broadcast
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Saarbrücken
E1 5
Wartburg OG 5
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Bettina Peden-Bennett, 04/27/2009 10:07 -- Created document.