Power efficient rapid system prototyping using CoDel: the 2D DWT using lifting

In this report, we present CoDel, a rapid hardware prototyping language, to implement a DSP module which performs the biorthogonal two-dimensional discrete wavelet transform using the lifting technique. Specifically, we implement the wavelet transform using the Le Gall integer-to-integer 5/3 filter bank. Using CoDel, we show how this wavelet transform can be implemented with just a few lines of code. We show how CoDel facilitates clock gating reducing dynamic power dissipation. We develop and use a state level power analysis framework, and determine that power savings of 16% can be expected.