Variable dimension VQ encoding and codebook design

Anamitra Makur; K. P. Subbalakshmi

doi:10.1109/26.618284

Variable dimension VQ encoding and codebook design

Anamitra Makur, K. P. Subbalakshmi

Department of Electrical and Computer Engineering

Indian Institute of Science Bangalore

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A variable dimension vector quantizer (VDVQ) has codewords of unequal dimensions. Here, a trellis-based sequential optimal VDVQ encoding algorithm is proposed. Also, a VDVQ codebook design algorithm based on splitting a node with equal or reduced dimensions is proposed that does not require any codebook parameter to be prespecified unlike known schemes. The VDVQ system is shown to outperform a few known VQ systems for AR(1) sources.

Original language	English
Pages (from-to)	897-899
Number of pages	3
Journal	IEEE Transactions on Communications
Volume	45
Issue number	8
DOIs	https://doi.org/10.1109/26.618284
State	Published - 1997

Keywords

Source coding
Variable-rate coding
Vector quantization

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10.1109/26.618284

Cite this

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AB - A variable dimension vector quantizer (VDVQ) has codewords of unequal dimensions. Here, a trellis-based sequential optimal VDVQ encoding algorithm is proposed. Also, a VDVQ codebook design algorithm based on splitting a node with equal or reduced dimensions is proposed that does not require any codebook parameter to be prespecified unlike known schemes. The VDVQ system is shown to outperform a few known VQ systems for AR(1) sources.

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KW - Variable-rate coding

KW - Vector quantization

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JO - IEEE Transactions on Communications

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Variable dimension VQ encoding and codebook design

Abstract

Keywords

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