Hi,
```
digital_constellation_modulator = digital.generic_mod(
constellation=digital.constellation_bpsk().base(),
differential=False,
samples_per_symbol=sps,
pre_diff_code=True,
excess_bw=excess_bw,
verbose=False,
log=False)
```
However, I would like to use modulation schemes which are not included in digital. I have two questions in that regard:
1) How can I define my own phase-amplitude type modulation schemes such as 4PAM, 64QAM which are not included by default?
2) Can I use digital.generic_mod with FSK type modulations like GFSK? If not how would I use them?
Thanks,
Roman