Modeling and analysis of quantization errors in two-channel subband filter structures

Necdet Uzun; Richard A. Haddad

doi:10.1117/12.131416

1 November 1992 Modeling and analysis of quantization errors in two-channel subband filter structures

Necdet Uzun, Richard A. Haddad

Proceedings Volume 1818, Visual Communications and Image Processing '92; (1992) https://doi.org/10.1117/12.131416
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

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.

Citation Download Citation

Necdet Uzun and Richard A. Haddad "Modeling and analysis of quantization errors in two-channel subband filter structures", Proc. SPIE 1818, Visual Communications and Image Processing '92, (1 November 1992); https://doi.org/10.1117/12.131416

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