The Effects of Coefficient Quantization on New CIC FIR Filters

Novel selective, highly effective and low complexity CIC (Cascaded-Integrator-Comb) FIR (Finite Impulse Response) filters, for applications in communication systems, are described here. The paper proposes the use of classical CIC filters as functions in generating new filters, by spreading the delays in the CIC filter comb stages. To verify the frequency response characteristic improvements of the suggested CIC FIR filters, comparative study of the frequency responses of the generated filters with classical CIC filters is provided. Quantization has a great influence on digital signal processing applications. The effects of coefficient quantization as one type of quantization that influences a filter characteristic are investigated here.