VLSI architecture of QMF for DWT integrated system

Abstract

Wavelet transform has become a suitable tool for DSP signal manipulation especially in image compression. A VLSI implementation of a CMOS circuit realizing a Discrete Wave Transform ( DWT) for Daubecchie's 6 using a novel realization of Quadrature Mirror Filter [QMF] is presented. The new design of the DWT system which is based on a new Finite Impulse Response filter FIR requires less Si area to be implemented, since the FIR filter is implemented using mixed parallel / sequential architecture resulting in reducing the number of binary multipliers used which are the major bottle neck governing the performance of the DSP processing. Consequently, it results in a much faster system. Moreover, the use of parallel multipliers results in less power dissipation.