I amÂ having trouble the the DBPSK mod and demod blocks. My flow graph
file sourceÂ -> DBPSKmod -> DBPSKdemod -> file sink
The file source is a 2 byte text file set to not repeat
The default parameters were used for the DBPSKmod and demod blocks
(including 2 Samples/Symbol)
When I run the graph the output text file becomes 13 bytes long and they
are almost all zeros. I am not sure how it gets to be that length.
I tried connecting the ouput of the DBPSKmod directly to the file sink
and the file size was 256 bytes. This matched my expectations based on:
2bytes input fileÂ * 8bits/byteÂ *Â 1Symbol/bitÂ Â 2 complex
samples/Symbol 8bytes /complex sample = 256 byte output file.
If anyone knows why the output file of the whole graph would be 13
bytesÂ or if I am missing something please let me know.