Use of the harris-Moerder Nyquist Pulse Shaping Filter I became aware today through fred harris' excellent presentation at the DSP Online Conference (https://www.dsponlineconference.com/) of the harris-Moerder pulse shaping filter which was published 15 years ago: http://eon.sdsu.edu/~seshagir/SDR05.pdf
This filter reportedly results in an order of magnitude lower EVM for the same number of taps, and importantly significantly reduced rejection of adjacent channels, but to my understanding isn't commonly used since the Root-Raised Cosine filter is so baked into our standards.
Is anyone aware of actual use of this alternate pulse shaping filter and does anyone have further experience with it? Are there any other reasons, now 15 years later, that this hasn't been more widely adopted?
Liguid-dsp implements root-Nyquist harris-Moerder (hM-3) filter using Parks-McClellan algorithm as :
void liquid_firdes_hM3(unsigned int _k, unsigned int _m, float _beta, float _dt, float * _h)