Optimal rate allocation in multiterminal compress-and-estimate source coding

Ruiyang Song, Stefano Rini, Alon Kipnis, Andrea J. Goldsmith

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

We consider a multiterminal source coding problem in which a source is estimated at a central processing unit from lossy-compressed remote observations. Each lossy-encoded observation is produced by a remote sensor. The sensor first obtains a noisy version of the source, then compresses this observation based on minimizing a local distortion measure that depends only on the marginal distribution of its observation. The central node, on the other hand, has knowledge of the joint distribution of the source and all the observations and produces the source estimate that minimizes a different distortion measure between the source and its reconstruction. In this paper, we investigate the problem of optimally choosing the rate of each lossy-compressed remote estimate so as to minimize the distortion at the central processor, subject to bound on the sum of the communication rate between the sensors and the central unit. We focus, in particular, on two models of practical relevance: the case of a Gaussian source observed in additive Gaussian noise and reconstructed under quadratic distortion, and the case of a binary source observed in bit-flipping noise and reconstructed under Hamming distortion. In both scenarios we show that there exist regimes under which having more remote encoders does not reduce the source distortion. In other words, having fewer, high-quality remote estimates provides a smaller distortion than having more, lower-quality estimates.

原文English
主出版物標題2016 IEEE Information Theory Workshop, ITW 2016
發行者Institute of Electrical and Electronics Engineers Inc.
頁面111-115
頁數5
ISBN(電子)9781509010905
DOIs
出版狀態Published - 21 10月 2016
事件2016 IEEE Information Theory Workshop, ITW 2016 - Cambridge, United Kingdom
持續時間: 11 9月 201614 9月 2016

出版系列

名字2016 IEEE Information Theory Workshop, ITW 2016

Conference

Conference2016 IEEE Information Theory Workshop, ITW 2016
國家/地區United Kingdom
城市Cambridge
期間11/09/1614/09/16

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