An Efficient VLSI Architecture for Convolution Based DWT Using MAC

The modern real time applications related to image processing and etc., demand high performance discrete wavelet transform (DWT). This paper proposes the floating point multiply accumulate circuit (MAC) based 1D/2D-DWT, where the MAC is used to find the outputs of high/low pass FIR filters. The proposed technique is implemented with 45 nm CMOS technology and the results are compared with various existing techniques. The proposed 8 x 8-point floating point 2-levels 2D-DWT achieves 27.6% and 83.7% of reduction in total area and net power respectively as compared with existing DWT [9].