High Speed VLSI Architecture for Multilevel Lifting 2-D DWT Using MIMO
The Discrete Wavelet Transform (DWT) Lifting architecture is a powerful signal analysis technique for non-stationary data. High speed implementation of this architecture is a challenging task. This paper proposes an efficient Multi-Input/Multi-Output VLSI architecture (MIMO) for two-dimensional lifting-based Discrete Wavelet Transform (DWT). The experimental results show that proposed architecture provides high throughput and power consumption compared to the conventional architecture. 2-D DWT has evolved as essential part of modern compression system such as JPEG 2000. This is because the DWT can decompose the signals into different sub bands with both time and frequency information and facilitate to arrive a high compression ratio.