Title :
A new structure for design narrow band lowpass FIR filters
Author :
Lian, Yong ; Yang, Chunzhu
Author_Institution :
Electr. & Comput. Eng. Dept., Nat. Univ. of Singapore, Singapore
Abstract :
A new structure is proposed for design narrow band sharp lowpass FIR filters. The proposed structure is able to achieve significant savings in the number of multipliers and adders when combined with the interpolated finite impulse response (IFIR) technique. The savings are achieved by replacing the interpolator in an IFIR filter with a prefilter-equalizer. The implementation of the proposed prefilter is multiplication free which leads to low complexity and low cost. We have shown by an example that the proposed structure yields additional savings of 44% and 36% in the number of multipliers and adders, respectively, compared to the IFIR approach
Keywords :
FIR filters; digital filters; equalisers; interpolation; low-pass filters; network synthesis; IFIR filter; adders; interpolated finite impulse response; low complexity filter; low cost filter; multipliers; narrow band lowpass FIR filter design; prefilter equalizer; Adders; Band pass filters; Costs; Delay; Digital filters; Environmentally friendly manufacturing techniques; Equalizers; Finite impulse response filter; Frequency response; Narrowband;
Conference_Titel :
TENCON 2001. Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology
Print_ISBN :
0-7803-7101-1
DOI :
10.1109/TENCON.2001.949595
