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  4. On the quadratic AWGN CEO problem and non-Gaussian sources
 
conference paper

On the quadratic AWGN CEO problem and non-Gaussian sources

Gastpar, M.  
•
Eswaran, K.
2005
2005 IEEE International Symposium on Information Theory (ISIT)
IEEE International Symposium on Information Theory

In the CEO problem, introduced by Berger et al, IEEE, Trans. Info. Theory, 1996, a CEO is interested in a source that cannot be observed directly. M agents observe independently noisy versions of the source and, without collaborating, must encode these across noiseless rate-constrained channels to the CEO. The quadratic AWGN CEO problem refers to the class of CEO problems for which the agents view the source through additive white Gaussian noise, and the distortion is squared error. This paper discusses two upper bounds to the CEO sum-rate distortion function for this class of problems. The first follows from elementary arguments. It permits two conclusions. First, the worst case is when the underlying source is Gaussian (for fixed variance). Second, there are source distributions that lead to a significantly better behavior. The second upper bound follows from a new bound on the rate loss between the CEO and the remote rate-distortion function. For certain source distributions and certain ranges of distortion, this bound is better than the first.

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Type
conference paper
DOI
10.1109/ISIT.2005.1523326
Web of Science ID

WOS:000234713800047

Author(s)
Gastpar, M.  
Eswaran, K.
Date Issued

2005

Publisher

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa

Published in
2005 IEEE International Symposium on Information Theory (ISIT)
ISBN of the book

0-7803-9150-0

Start page

219

End page

223

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LINX  
Event nameEvent placeEvent date
IEEE International Symposium on Information Theory

Adelaide, AUSTRALIA

Sep 04-09, 2005

Available on Infoscience
October 17, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/71618
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