Analysis of Conditional PDF-Based Split VQ

Chatterjee, S and Sreenivas, TV (2007) Analysis of Conditional PDF-Based Split VQ. In: IEEE Signal Processing Letters, 14 (11). pp. 781-784.

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Abstract

The split vector quantization (SVQ) method results in a “coding loss” due to the independent quantization of split subvectors. To recover the coding loss, conditional pdf-based split vector quantization methods were proposed recently. For a multivariate Gaussian source, we theoretically derive the expression of rate-distortion (R/D) performance for conditional pdf-based split vector quantization (CSVQ) method, using high rate quantization theory and optimum bit allocation. We also derive the rate-distortion performance expression of traditional SVQ method and, thus, quantify the coding gain of CSVQ method over SVQ method.

Item Type:	Journal Article
Publication:	IEEE Signal Processing Letters
Publisher:	IEEE
Additional Information:	©2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Conditional pdf;high rate quantization;multivariate Gaussian;split vector quantization.
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	28 Jul 2008
Last Modified:	19 Sep 2010 04:48
URI:	http://eprints.iisc.ac.in/id/eprint/15304

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