Ed Criscuolo wrote:
Once you have the actual binary bitstream, decoding NRZI is easy.
There's a custom block to do this provided in the "GMSK Spacecraft
Groundstation" project in CGRAN:
https://www.cgran.org/wiki/Projects
This project would be good for you to study, as it represents
a real-world application that does something very similar to
what you want, performing both bit and packet synchronization.
Thank you. This was a very interesting project indeed. I will try to
reuse as much as possible.
I am also having problems testing the system as I go along. What I would
like to do is use a vector sink, and print the received samples to the
screen. Hover when I tried initially with only a vector source connected
directly to a vector sink, and using the read()-method, only "()" is
printed. This seems to be the case no matter where in the code the print
statement is issued. (Using "print tb.gr_vector_sink_x_0.data()")
What is wrong? And what would be the easiest way to verify the received
samples?
- Einar
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