Title :
An outer bound for the vector Gaussian CEO problem
Author :
Ekrem, Ersen ; Ulukus, Sennur
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA
Abstract :
We study the vector Gaussian CEO problem, and provide an outer bound for its rate-distortion region. We obtain our outer bound by evaluating an outer bound for the multiterminal source coding problem by means of a technique relying on the de Bruijn identity and the properties of the Fisher information. Next, we address the tightness of our outer bound, and show that our outer bound does not provide the ratedistortion region in general. In particular, we provide a specific example where the rate-distortion region is strictly contained in our outer bound.
Keywords :
Gaussian processes; rate distortion theory; source coding; vectors; Fisher information; de Bruijn identity; multiterminal source coding problem; outer bound evaluation; rate-distortion region; vector Gaussian CEO problem; Additives; Entropy; Mutual information; Rate-distortion; Sensors; Source coding; Vectors;
Conference_Titel :
Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
978-1-4673-2580-6
Electronic_ISBN :
2157-8095
DOI :
10.1109/ISIT.2012.6284257