Re: [Discuss-gnuradio] USRP GNU radio receiver

[CEL]

Watch out! What do you get at the *output* of your SDR device when you
transmit a constant complex baseband signal, mixed to a carrier
frequency? How does that differ from transmitting a complex baseband
sinusoid mixed to a carrier frequency?

On Tue, 2019-07-16 at 18:32 +0200, sumit kumar wrote:
> Ok, so for a constant source, in the time domain you will see a flat signal 
> only! Try connecting a spectrum analyzer and you shud see a peak at DC becz 
> Fourier transform of constant signal is impulse. 
> And yes, as Marcus said, increase the sampling rate! 
> 
> 
> On Tue, 16 Jul 2019 at 18:06, Simona Sibio <address@hidden> wrote:
> > Thank you for the assistance.
> > 
> > I put the module "constant source" in my flow grap. 
> > With this module, I can choose witch amplitude I want to send.
> > I attached the flow graph.
> > And, I would want to read these values in the receiver.
> > 
> > Simona
> > 
> > Il giorno mar 16 lug 2019 alle ore 16:58 sumit kumar <address@hidden> ha 
> > scritto:
> > > Hi Simona, what is the "constant signal" here ? 
> > > 
> > > On Tue, 16 Jul 2019 at 17:54, Simona Sibio <address@hidden> wrote:
> > > > Hi all,
> > > > 
> > > > I want to use GNU radio to measure the amplitude and the phase of a 
> > > > signal.
> > > > I send a constant signal with the transmitter USRP but in the receiver 
> > > > there is a flat signal with amplitude 0 and offset 0.
> > > > I tried to send a sine signal and the receveir works fine.
> > > > How can I do to send only a constant and measure the amplitude?
> > > > 
> > > > Thank you for your time.
> > > > 
> > > > Simona
> > > > 
> > > > _______________________________________________
> > > > Discuss-gnuradio mailing list
> > > > address@hidden
> > > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > > 
> > > 
> > > -- 
> > > Sumit Kumar
> > > 
> > > 
> 
> 
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