TITLE:
Wireless communication and
coordination in parallel relay networks
SPEAKER:
Brett Schein
DATE:
2:00-3:00 P.M., Thursday, February 13,
2003
LOCATION:
Yosemite, 3L (PA)
HOST:
Vinay Deolalikar
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ABSTRACT:
Large-scale wireless data networks are spectacularly expensive. It
is therefore important to efficiently use infrastructure and
transmission power. Unfortunately, comparatively little is known about
power-efficient communication in a distributed environment. There is,
for example, a complex trade-off between exploiting independent noisy
signals at different relays and closely coordinating relay
transmissions to a receiver.
We address the difficult problem of designing an efficient
structure for communication, by choice of source transmission codebook
and relay terminal processing. We use an information theoretic
framework to study several simple multiple terminal networks, focusing
on single source, single destination networks where communication must
take place through intermediate nodes. Our goal is to determine how
much data we can get reliably from source to destination, placing no
importance on delay or computational complexity. The core problem then
involves distributed detection at the intermediate nodes and
coordination in relaying information to the destination.
