Efficient Algorithms for Discrete Wavelet Transform by K. K. Shukla & Arvind K. Tiwari

Author:K. K. Shukla & Arvind K. Tiwari
Language: eng
Format: epub
Publisher: Springer London, London

3.3 Finite Precision Filter Bank Implementation

Decimation and interpolation in the sub-band filter bank with fixed filter coefficients result in an overall system that is generally linear but periodically time varying [26]. Conventional design techniques for analysis and synthesis filters guarantee PR of the original signal from its sub-band components in the absence of quantization and transmission errors. This assumes the aliasing errors in sub-band analysis part are explicitly canceled out in the reconstruction stage. However, in actual VLSI, implementation of DWT following quantization errors is present:(1) Input signal quantization error.

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