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2011

Distributed Estimation and Coding: A Sequential Framework Based on a Side-Informed Decomposition

11 years 4 months ago
Distributed Estimation and Coding: A Sequential Framework Based on a Side-Informed Decomposition
Abstract—We propose a sequential framework for the distributed multiple-sensor estimation and coding problem that decomposes the problem into a series of side-informed source coding problems and enables construction of good codecs. Our construction relies on a separation result for the simplified scenario where information from one sensor is to be sent to the CP that already has information regarding the desired signal. We show that the optimal encoder decoder combination, in this setting, can be decomposed, without loss in performance, into two steps: A first preprocessing step to extract relevant information from the indirect observation with consideration of the side information, followed by a second step of side-informed encoding of the preprocessed output. A recursive exploit of the decomposition coupled with side-informed transform coding allows us to construct encoders by reusing scalar Wyner–Ziv codecs. We develop a numerical procedure for obtaining bounds delineating the...
Chao Yu, Gaurav Sharma
Added 15 May 2011
Updated 15 May 2011
Type Journal
Year 2011
Where TSP
Authors Chao Yu, Gaurav Sharma
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