Ok I had used the muliplier in a previous code using Frequency Modulation which is why I used it again. But thanks for that. I will change it to a smaller value.
I also had it set up with the interpolation to 512 and the decimation to 256 but it didn't work either. Though I will set these values to the range it has to fall between. As for the transmitter, I had connected the output of the modulation block to a scope to see if it was transmitting the correct waveform, which it was. Though the problem came when I try to receive. When I tune into the frequency I am transmitting at there is no signal at all, which I am not sure why that is happening. Ismael Tom Rondeau wrote: > > 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 > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/Receiving-DBPSK-side-not-working.-tp31434999p31435221.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
