High speed 2-D discrete wavelet transform using distributed arithmetic and kogge stone adder technique
Samit Kumar Dubey, Arvind Kumar Kourav, Shilpi Burman Sharma · 2017
Curtail the circuit complexity and improve the performance are proposed; Discrete Wavelet Transform is applied for the stationary and non-stationary signal, it is used to speech signal, audio and video signal etc. Distributed arithmetic (DA) is a general and effective technique to implement multiplierless filters and has been exploited in the past to implement the discrete wavelet transform as well. It's found that DA requires ROM and size of ROM increases exponentially as the increase in number of inputs, which highly increases the circuit complexity. Proposed techniques is based on high speed area efficient 2-D discrete wavelet transform (DWT) using 9/7 filter based modified Distributed Arithmetic (MDA) Technique and kogge stone adder. MDA technique is applied to low and high pass filter of the discrete wavelet transform. This technique consists of adder, shift register and free of multiplier. Design and result are implemented in Xilinx software and verified resistor transfer level (RTL) and waveform.