3 Commits

Author	SHA1	Message	Date
dennis.sheirer	c12123a81b	P25 - work in progress to improve CQPSK LSM audio output. Audio output is still choppy but greatly improved over the previous test release.	2015-04-25 23:21:20 +00:00
dennis.sheirer	7d948c4af4	P25 LSM work in progress. CQPSK demodulator is working now, but there is a slight phase error in the constellation (it's rotated right by 5-10 degrees). I'm not sure if this is an error coming from the decoder, or if it's reflecting a phase imbalance from the source tuner i/q data.	2015-02-16 23:14:23 +00:00
dennis.sheirer	a65e821e85	P25 LSM decoder work in progress. Adds a CQPSK decoder based on Max's (KA1RBI) scope.py and gardner loop. ... The CQPSK decoder is starting to take shape, but needs more tweaking and testing. It's not keeping a good lock on strong P25 signals. I have to add some more features to the intrumentation package to allow me to visualize the internals of the CQPSK decoder so that I can get a better sense of what needs fine tuning. The CQPSK decoder may work for anyone that wants to sync the repo and run the build script.	2015-02-10 00:42:08 +00:00