A systolic IIR decimator
T.A. Williams · International Conference on Acoustics, Speech, and Signal Processing · 2003
A discussion is presented of several methods of providing complex pole pairs in the transfer function of a decimator for oversampled converters. Utilization of pole cancellation with added compensating zeros yields a systolic structure that is easily implemented. Decomposition of the coefficient terms of the IIR decimator by means of a high radix modified Booths algorithm recording scheme is shown to be efficient. An extension to the Agarwal and Burrus transformation for poles close to the z=1 point on the z-plane is shown to allow a reduction in the precision of the coefficients.>