Hi,
I am having trouble the the DBPSK mod and demod blocks. My flow graph is:
file source -> 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 file * 8bits/byte * 1Symbol/bit * 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 bytes or if I am missing something please let me know.
Thanks,
Dave