Enhancing and implementing a digital filter using CIC and FIR filters

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Abstract

This research designed and implemented a CIC-FIR filter structure for receivers. When it's necessary that limits communications in specific cutoff frequency ranges, Band pass filters are a crucial component of common electronics used in digital signal processing It is possible to make It Passing filtration with the use of FIR. However, because of its challenges in satisfying time closure of the design and the growing complexity of hardware, the CIC-FIR filter structure has been proposed for handling the limitations of FIR filter-based BPF design. To demonstrate the CIC-FIR structure is superior for designing BPF, many comparisons were conducted applying it for varying orders and sampling frequencies. By lowering the filter's sampling rate, this structure will make the system's needs achievable. In addition to making timing closure simple, this approach indirectly lowers power usage.

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Keywords

Decimator, MATLAB, Interpolator, FIR-CIC filters, filters for FIR, or CIC filters.