semilogarithmic nonuniform vector quantization of two-dimensional laplacean source for small variance dynamics

Clicks: 137
ID: 229152
2012
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Ranked #74 of 100 articles by views in molecular therapy : the journal of the american society of gene therapy

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Abstract
In this paper high dynamic range nonuniform two-dimensional vector quantization model for Laplacean source was provided. Semilogarithmic A-law compression characteristic was used as radial scalar compression characteristic of two-dimensional vector quantization. Optimal number value of concentric quantization domains (amplitude levels) is expressed in the function of parameter A. Exact distortion analysis with obtained closed form expressions is provided. It has been shown that proposed model provides high SQNR values in wide range of variances, and overachieves quality obtained by scalar A-law quantization at same bit rate, so it can be used in various switching and adaptation implementations for realization of high quality signal compression.
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peric2012radioengineeringsemilogarithmic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors
Journal molecular therapy : the journal of the american society of gene therapy
Year 2012
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URL
www.radioeng.cz/fulltexts/2012/12_01_0099_0103.pdf
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