BPSK Transmitter

Hi ,
I am trying to implement BPSK transceiver system on a USRP without
the predefined blocks . I am currently testing my design using a file
source ( as shown in the attachment) but i am not able to receive the
same at the output . Can somebody help ?
Will implement the Costas Loop and other advanced things on the receiver
later .

Regards
Abhinav J.

Abhinav,

If you’re referring to the difference in file size, it’s 4096 bytes,
which probably just means there was a little data left in a buffer that
didn’t get pushed through when the flowgraph was done. A FIR may also
eat some number of samples (not sure about this).

If you’re referring to the signal itself, there’s no way you’ll get an
exact copy back after passing the signal through a filter.

  • Jeff

Abhinav,

This doesn’t matter for a real world problem. You could add zeros to the
end of your input if you need a certain number of samples out.

Please keep replies on the list.

  • Jeff