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Proceedings Paper

Modeling and analysis of quantization errors in two-channel subband filter structures
Author(s): Necdet Uzun; Richard A. Haddad
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Paper Abstract

This paper is concerned with the analysis and modeling of the effects of quantization of subband signals in a two channel filter bank. We derive equations for the autocorrelation and power spectral density (PSD) of the reconstructed signal y(n) in terms of the analysis/synthesis filters, the PSD of the input, and the quantizer model. Formulas for the mean-square error (MSE) and for compaction gain are obtained in terms of these parameters. We assume the filter bank is perfect reconstruction (PR) (but not necessarily paraunitary) in the absence of quantization and transmission errors. These formulas set the stage for filter optimization (maximization of compaction gain and minimization of MSE) subject to PR and bit constraints.

Paper Details

Date Published: 1 November 1992
PDF: 12 pages
Proc. SPIE 1818, Visual Communications and Image Processing '92, (1 November 1992); doi: 10.1117/12.131416
Show Author Affiliations
Necdet Uzun, Polytechnic Univ. (United States)
Richard A. Haddad, Polytechnic Univ. (United States)


Published in SPIE Proceedings Vol. 1818:
Visual Communications and Image Processing '92
Petros Maragos, Editor(s)

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