Re: Symbols covered by RRC filter in Rect Constellation Modulator

2021-08-07 Thread George Edwards
Good morning Jeff! Thanks for the code snippet. I am trying to find the number of data symbols covered by the prototype filter and from your code snippet I can calculate it. It's ncoeff/sps. Thank you! George On Fri, Aug 6, 2021, 2:10 PM Jeff Long wrote: > From generic_mod_demod.py, here is how

Re: Symbols covered by RRC filter in Rect Constellation Modulator

2021-08-06 Thread Jeff Long
>From generic_mod_demod.py, here is how the taps are generated. The taps are then used by a polyphase filterbank-based arbitrary resampler. I think the answer to your question is 11. nfilts = 32 ntaps_per_filt = 11 ntaps = nfilts * ntaps_per_filt *

Symbols covered by RRC filter in Rect Constellation Modulator

2021-08-06 Thread George Edwards
Hello GNURadio Community, The constellation modulator has an RRC filter and we are allowed to set the alpha and the number of samples per symbol parameters. An RRC filter is normally designed to cover a number of symbols to the right and left from the center of its impulse response. Anyone know