Re: [Freetel-codec2] [Discuss-gnuradio] Why the DMR 4FSK modem is less optimal than David Rowe's 4FSK modem

On 9/12/17, Phil Frost wrote: > I did some experimentation with this technique on BPSK31, and I was able to > get a little more performance in simulations with a matched filter and > trellis decoding than fldigi and PSKCore got with their unmatched filters > designed to

Re: [Freetel-codec2] [Discuss-gnuradio] Why the DMR 4FSK modem is less optimal than David Rowe's 4FSK modem

Hi Phil, Of course, you are right, but Trellis is computationally more expensive than a straight change of the modem parameters. The DMR software stack is huge, compared to what a small community of largely open source enthusiasts can come up with. (my problem with DMR as a radio equipment