Title
Near Tightness of the El Gamal and Cover Region for Two Descriptions
Abstract
We give a single letter outer bound for the two descriptions problem for iid sources that is universally close to the El Gamal and Cover (EGC) inner bound. The gaps in the quadratic distortion case for the sum and individual rates are upper bounded by 1.5 and 0.5 bits/sample, respectively. These constant bounds are universal with respect to the source being encoded, provided that its variance is finite. They are also universal with respect to the desired distortion levels, under the assumption that, after normalizing the source to have unit variance, D_i 驴 (0,1) for i 驴 {0,1,2} and D驴 驴 (D_1^{ - 1}+ D_x^{ - 1}- 1)^{ - 1} .
Year
DOI
Venue
2005
10.1109/DCC.2005.57
DCC
Keywords
Field
DocType
el gamal,distortion level,quadratic distortion case,iid source,unit variance,constant bound,cover region,descriptions problem,individual rate,single letter,rate distortion theory,information theory,gaussian distribution,source coding,data compression,decoding,upper bound
Discrete mathematics,Combinatorics,Source code,Quadratic equation,Rate–distortion theory,Distortion,Inner bound,Mathematics,Bounded function
Conference
ISSN
ISBN
Citations 
1068-0314
0-7695-2309-9
1
PageRank 
References 
Authors
0.37
9
2
Name
Order
Citations
PageRank
Luis Montano1545.24
Vittorio Castelli2928129.71