Abstract :
The article describes a class of digital filters, called interpolated finite impulse response (IFIR) filters that can implement narrowband lowpass FIR filter designs with a significantly reduced computational workload relative to traditional FIR filters. Topics discussed include: optimum expansion factor choice, number of FIR filter taps estimation, IFIR filter performance modeling, passband ripple considerations, implementation, and filter design.
Keywords :
FIR filters; interpolation; low-pass filters; IFIR filter implementation; digital filters; filter design; filter performance; filter taps; interpolated finite impulse response filters; interpolated narrowband lowpass FIR filters; optimum expansion factor; passband ripple; Delay; Digital filters; Finite impulse response filter; Frequency; Narrowband; Passband; Prototypes; Signal design; Time domain analysis; Transfer functions;
