Title :
Efficient IIR wavelet filter banks with approximate linear-phase in pass-band
Author :
Abdul-Jabbar, Jassim M. ; Hmad, Rasha Waleed
Author_Institution :
Dept. of Comput. Eng., Univ. of Mosul, Mosul, Iraq
Abstract :
In this paper IIR wavelet filter banks are efficiently designed and implemented with approximate linear-phase in pass-band. Bireciprocal lattice wave filter (BLWDF) is utilized with the replacement of one of its branches by only a unit delay. The resulting IIR filter bank is efficiently designed as wavelet transform equivalence with approximate linear-phase filters. Suitable coefficient wordlengths representations are estimated for best selection of some prescribed performance measures. A multiplierless FPGA implementation of such IIR wavelet filter is then achieved with less complexity (1%-2%) and high operating frequency(123.885-126.88MHz).
Keywords :
IIR filters; channel bank filters; field programmable gate arrays; linear phase filters; wavelet transforms; BLWDF; IIR filter bank; IIR wavelet filter banks; approximate linear-phase filters; bireciprocal lattice wave filter; coefficient wordlengths representations; multiplierless FPGA implementation; operating frequency; pass-band; unit delay; wavelet transform equivalence; Electrical engineering; Field programmable gate arrays; Filter banks; Finite impulse response filter; IIR filters; Wavelet transforms; FPGA implementations; IIR wavelet filter banks; all-pass sections; bireciprocal lattice wave filters (BLWDFs); linear phase processing;
Conference_Titel :
Applied Electrical Engineering and Computing Technologies (AEECT), 2011 IEEE Jordan Conference on
Conference_Location :
Amman
Print_ISBN :
978-1-4577-1083-4
DOI :
10.1109/AEECT.2011.6132513
