This is very recent version of MATLAB - either the most recent or the
one just before. I have octave 4.0.3 with communications 1.2.1. I do
not install the comm packages or any dependencies because there are too
many conflicts with my own library functions, so I just cherry pick what
I need and install the bits.
I am pretty sure this is an error and the offending line is a
convolution that does the arithmetic on the integers instead the
appropriate Galois field, but I would appreciation some feedback. If it
is an error I will fix it. Shouldn't be hard.