Is there a Julia equivalent of MATLAB’s rcosdesign?

Specific Domains Signal and Image Processing
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1

I’m porting a QPSK simulation from MATLAB to Julia and need a root-raised-cosine filter.
MATLAB provides:

rrc_filter = rcosdesign(beta, span, samples_per_symbol, "sqrt");

I checked DSP.jl, but rcosdesign does not appear to be available:

using DSP
rcosdesign(0.35, 4, 20)
# UndefVarError: rcosdesign not defined

For now, I implemented the root-raised-cosine impulse response manually and normalized it to unit energy. However, I wanted to check whether:

  1. There is an existing Julia package or function that provides RRC filters.
  2. DSP.jl has an alternative API I overlooked.
  3. There is interest in adding an rcosdesign-equivalent function to DSP.jl.
    The desired behavior is equivalent to MATLAB’s square-root raised-cosine mode, with parameters for roll-off factor, span in symbols, samples per symbol, and energy normalization.
    Any recommendations would be appreciated.
2

There is in SignalAnalysis.jl, which uses DSP.jl.

Here is some info on it:

3

Thanks a lot, I’ll check it out @kahliburke .