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Re: [Discuss-gnuradio] GRC: sending IQ samples of square is resulting wi
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From: |
Jason Uher |
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Subject: |
Re: [Discuss-gnuradio] GRC: sending IQ samples of square is resulting with lot of noise. |
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Date: |
Wed, 27 Jan 2010 07:43:38 -0600 |
On Wed, Jan 27, 2010 at 3:31 AM, srinivas naga vutukuri
<address@hidden> wrote:
> Am sending a +1 to -1 amplitude square wave samples from Tx and when i
> capture on Rx end its not almost a square wave. I have generated the above
I believe this is the maximum output power for the USRP2, and your are
likely seeing distortions from the non-linearity of the circuits
involved. I'm not sure what the linear range is for your
daughterboards, but try turning it down to +/- 0.3 and see what
happens.
Also, make sure that your decimation/interpolation factors are
correct. That is, if the DAC and ADC are operating at different
sample rates, you have to adjust your int/dec factors or samples per
symbol accordingly.
Jason