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List:       gnuradio-discuss
Subject:    Re: [Discuss-gnuradio] Why packet decode failure happen when fft-length is set to 64?
From:       "Ralph A. Schmid, dk5ras" <ralph () schmid ! xxx>
Date:       2013-03-28 8:47:34
Message-ID: 002c01ce2b90$e45eb4e0$ad1c1ea0$ () schmid ! xxx
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In case your USRPs have an input for an external clock just feed them from
one external clock source. USRP1 need a modification as the external clock
connector is not yet installed, but the connections are available on the
PCB.

Ralph.

> thanks for you reply. How to do that exactly. You mean need to modify the
> hardware.
> 
> 
> Sent from my iPhone
> 
> On 28 Mar, 2013, at 15:04, "Ralph A. Schmid, dk5ras" <ralph@schmid.xxx>
> wrote:
> 
> > An exact clock source may help, or clocking both USRPs from the same
> clock.
> >
> > Ralph.
> >
> >
> >> Could be related to the subcarrier spacing in the bandwidth and
> >> frequency offset. Try to hand-tune your tx and rx frequencies so they
> >> are as close
> > as
> >> you can get (using uhd_siggen and uhd_fft) them and see if that helps.
> >>
> >> Tom
> >>
> >> _______________________________________________
> >> Discuss-gnuradio mailing list
> >> Discuss-gnuradio@gnu.org
> >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >
> >
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > Discuss-gnuradio@gnu.org
> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio



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