DocumentCode :
3603806
Title :
A Novel Approach to Design Low-Cost Two-Stage Frequency-Response Masking Filters
Author :
Ying Wei ; Shaoguang Huang ; Xiaojie Ma
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Volume :
62
Issue :
10
fYear :
2015
Firstpage :
982
Lastpage :
986
Abstract :
The multistage frequency-response masking (FRM) technique is widely used to reduce the complexity of a filter when the transition bandwidth is extremely small. In this brief, a real generalized two-stage FRM filter without any constraint on the subfilters or the interpolation factors was proposed. New principles and equations were deduced to determine the design parameters. The subfilters were then jointly optimized using nonlinear optimization. Experiential results show that when the proposed algorithm obtains different solutions with the conventional algorithm, the solution of the proposed approach is better with less number of filter coefficients and sometimes with lower delay as well than the conventional two-stage FRM, which can lead to a reduced hardware cost in applications.
Keywords :
FIR filters; frequency response; optimisation; filter coefficients; low-cost two-stage frequency-response masking filters; multistage frequency-response masking technique; nonlinear optimization; two-stage FRM filter; Complexity theory; Delays; Filtering algorithms; Finite impulse response filters; Interpolation; Optimization; Passband; FIR filters; Finite-impulse response filters; frequency-response masking; frequency-response masking (FRM); narrow transition-band filters; optimization;
fLanguage :
English
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-7747
Type :
jour
DOI :
10.1109/TCSII.2015.2457794
Filename :
7161296
Link To Document :
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