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High-rate analysis of channel-optimized vector quantization

Murthy, Chandra R and Rao, Bhaskar D (2007) High-rate analysis of channel-optimized vector quantization. In: IEEE International Conference on Acoustics, Speech and Signal Processing, 2007. ICASSP 2007., 15-20 April 2007, Honolulu, HI.

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Abstract

High-rate analysis of channel-optimized vector quantizationThis paper considers the high-rate performance of channel optimized source coding for noisy discrete symmetric channels with random index assignment. Specifically, with mean squared error (MSE) as the performance metric, an upper bound on the asymptotic (i.e., high-rate) distortion is derived by assuming a general structure on the codebook. This structure enables extension of the analysis of the channel optimized source quantizer to one with a singular point density: for channels with small errors, the point density that minimizes the upper bound is continuous, while as the error rate increases, the point density becomes singular. The extent of the singularity is also characterized. The accuracy of the expressions obtained are verified through Monte Carlo simulations.

Item Type: Conference Paper
Additional Information: Copyright 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.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 14 Oct 2011 09:11
Last Modified: 14 Oct 2011 09:11
URI: http://eprints.iisc.ernet.in/id/eprint/41443

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