Title :
Design of finite wordlength 2-D recursive digital filters using all-pass building blocks
Author :
Safiri, H. ; Ahmadi, M. ; Ramachandran, V. ; Miller, W.C.
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
A technique for the design of IIR filters by using only finite wordlength all-pass subfilters is presented. It is known that all-pass filters are less sensitive to the coefficient quantization noise than most of the other types of filters. To show this fact, a stable band-pass filter is designed by using infinite wordlength all-pass subfilters through a nonlinear optimization process. A branch and bound technique is then utilized to optimize the quantized infinite precision coefficients
Keywords :
IIR filters; all-pass filters; band-pass filters; circuit optimisation; filtering theory; recursive filters; two-dimensional digital filters; 2D recursive digital filters; IIR filters; all-pass building blocks; all-pass subfilters; branch/bound technique; coefficient quantization noise; design method; finite wordlength digital filters; nonlinear optimization process; quantized infinite precision coefficients; stable band-pass filter; Band pass filters; Design methodology; Design optimization; Digital filters; Ellipsoids; Frequency response; High definition video; Least squares methods; Nonlinear equations; Stability;
Conference_Titel :
Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2972-4
DOI :
10.1109/MWSCAS.1995.510186
