On Tue, Apr 19, 2011 at 2:03 PM, ish13 <[email protected]> wrote: > > I am using DBPSK, but I am not receiving anything when I transmit my > signal. > I attached the flow-graphs from the companion. Can someone look through it > and tell me if it is correct? > > Thanks > Ismael > > http://old.nabble.com/file/p31434999/Receiver.png Receiver.png > http://old.nabble.com/file/p31434999/Transmitter.png Transmitter.png >
A few issues. First, don't set the multiplier to 32k as you will probably start to over drive the amplifier. I tend to keep this at a max of 15k. More importantly, though, you're interpolation and decimations are set to 4k and 2k, respectively. You cannot use this large of a number. The max (if I recall) are 512 for interp and 256 for decim. It's also helpful to start the transmitter and use the usrp_fft.py program to make sure you are receiving what you think you are receiving. Tom
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