1. A method to decimate an indexed set of data elements, said method comprising: arranging said indexed set of data elements into groups of at least two data elements; addressing a pre-programmed look-up-table (LUT) using at least two index values corresponding to said at least two data elements in each of said groups; and outputting a decimated data value from said LUT in response to each of said groups to generate a decimated set of data elements.