VLSI Implementation of Discrete Wavelet Transform Using Systolic Array Architecture for Daubechies3 Wavelet

Rashmi Patil, Dr. M. T. Kolte

Abstract: The wavelet transform has itself a useful tool in the field of 1-dimensional and 2-dimensional signal compression systems. Due to the growing importance of this technique, there is an increasing need in many working groups for having a development environment which could be flexible enough and where the performance of a specific architecture could be measured, closer to reality rather than in a theoretical way. Our work is new, simple and efficient VLSI architecture for computing the Discrete Wavelet Transform (DWT). The proposed architecture is systolic in nature, modular and extendible to 1-D DWT transform of any size. The systolic array architecture (DWT-SA) has been designed, simulated and implemented in VLSI. Being systolic in nature, the architecture can compute DWT at a rate of N106 samples/sec corresponding to a clock speed of N MHzs.

Keywords: DWT, FRA, hardware efficiency, six tap Fir Filter, Systolic Array