Decimate signal using cascaded integrator-comb filter optimized for HDL code generation

**Library:**DSP System Toolbox HDL Support / Filtering

The CIC Decimation HDL Optimized block decimates an input signal by using a
cascaded integrator-comb (CIC) decimation filter. CIC filters are a class of linear phase FIR
filters consisting of a comb part and an integrator part. The CIC decimation filter structure
consists of *N* sections of cascaded integrators, a rate change factor of
*R*, and then *N* sections of cascaded comb filters. For
more information about CIC Decimation filter, see Algorithms.

The block supports fixed decimation rate. It provides an architecture suitable for HDL code generation and hardware deployment.

The block supports real and complex fixed-point inputs.

[1] Hogenauer, E.B. “An
Economical Class of Digital Filters for Decimation and Interpolation.” *IEEE
Transactions on Acoustics, Speech and Signal Processing*. Vol. 29, Number 2,
1981, pp. 155–162.

`dsp.CICCompensationDecimator`

|`dsp.CICCompensationInterpolator`

|`dsp.CICDecimator`

|`dsp.CICInterpolator`

|`dsp.HDLCICDecimation`