DocumentCode :
2888535
Title :
Comparison of IIR filter structure complexities using multiplier blocks
Author :
Dempster, A.G. ; Macleod, M.D.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
Volume :
2
fYear :
1995
fDate :
30 Apr-3 May 1995
Firstpage :
858
Abstract :
This paper is concerned with low complexity (e.g. IC area or gate count) implementation of fixed-point IIR digital filters. Low-sensitivity structures, such as wave structures, require smaller fixed-point wordlengths. For this reason, they have been proposed for minimizing filter complexity. However, filter coefficient multipliers can be implemented using multiplier blocks. Traditional structures, such as the direct form, benefit greatly from the use of multiplier blocks, and a statistical study is reported showing that they then become comparable to (or better than) wave structures in complexity. The cascade structure is found to be the most efficient
Keywords :
IIR filters; cascade networks; digital arithmetic; digital filters; filtering theory; multiplying circuits; IIR filter structure complexities; cascade structure; filter coefficient multipliers; fixed-point digital filters; fixed-point wordlengths; low-sensitivity structures; multiplier blocks; wave structures; Cost function; Design methodology; Digital filters; Digital integrated circuits; IIR filters; Passband; Probability; Transfer functions; Very large scale integration;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2570-2
Type :
conf
DOI :
10.1109/ISCAS.1995.519898
Filename :
519898
Link To Document :
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