DocumentCode :
2326349
Title :
A novel structure for 2nd order digital filters
Author :
Li, Gang ; Huang, Chaogeng ; Hua, Jingyu ; Huang, Bin
Author_Institution :
Coll. of Inf. Eng., Zhejiang Univ. of Technol., Hangzhou
fYear :
2008
fDate :
Nov. 30 2008-Dec. 3 2008
Firstpage :
874
Lastpage :
877
Abstract :
In this paper, based on a new parametrization of the input-balanced realizations a novel structure is proposed for implementation of 2nd order digital filters. Like the normalized lattice structure, it contains a Givens rotation. The expression of roundoff noise gain for this structure is derived. This proposed structure is simpler than the normalized structure. Though having the same number of structure parameters as that of the classical optimal state-space roundoff realizations, it can be implemented much more efficiently using the CORDIC techniques. Numerical examples show that the proposed structure also outperforms the normalized structure and the classical optimal state-space realizations in terms of minimizing roundoff noise.
Keywords :
digital arithmetic; digital filters; 2nd order digital filters; CORDIC techniques; input-balanced realizations; normalized lattice structure; parametrization; roundoff noise gain; Chaos; Cost function; Digital filters; Educational institutions; Electronic mail; Gain measurement; Lattices; Noise measurement; Nonlinear filters; Roundoff errors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
Type :
conf
DOI :
10.1109/APCCAS.2008.4746162
Filename :
4746162
Link To Document :
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