Title :
Designing FIR filters with variable notch
Author :
Miyata, Toma ; Aikawa, Naoyuki
Author_Institution :
Grad. Sch. of Eng., Nihon Univ., Koriyama
Abstract :
In this paper, we propose a transfer function of filters which does not change filter characteristics even if notch frequency changes. A change in filter coefficient which depends on change in a notch frequency is approximated by the polynomial which used a variable parameter. In this method, the minimization problems for the coefficients of the filter with a variable notch are formulated as semidefinite programming (SDP) in the frequency domain. Moreover we present that the proposed VDF can be implemented using the Farrow structure suitable for high-speed signal processing.
Keywords :
FIR filters; frequency-domain analysis; notch filters; polynomial approximation; FIR filters; Farrow structure; frequency domain; high-speed signal processing; notch frequency changes; semidefinite programming; transfer function; variable notch; Finite impulse response filter; FIR filter; Farrow structure; SDP; minimax approximation; variable notch;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697458