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Re: [Discuss-gnuradio] USRP GNU radio receiver

From: sumit kumar
Subject: Re: [Discuss-gnuradio] USRP GNU radio receiver
Date: Tue, 16 Jul 2019 18:32:52 +0200

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! 
Screenshot from 2019-07-16 18-29-17.png

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.


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.


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