Title :
A systolic IIR decimator
Author :
Williams, Tim A.
Author_Institution :
Motorola Inc., Austin, TX, USA
Abstract :
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
Keywords :
cellular arrays; logic arrays; poles and zeros; transfer functions; Agarwal and Burrus transformation; coefficient terms; compensating zeros; complex pole pairs; high radix modified Booths algorithm recording scheme; oversampled converters; pole cancellation; systolic IIR decimator; systolic structure; transfer function; Analog-digital conversion; CMOS technology; Finite impulse response filter; IIR filters; Noise shaping; Quantization; Sampling methods; Silicon; Spectral shape; Transfer functions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266990
