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Re: [Discuss-gnuradio] Sending a Sinusoidal Signal
From: |
dbeken |
Subject: |
Re: [Discuss-gnuradio] Sending a Sinusoidal Signal |
Date: |
Mon, 16 Mar 2009 04:40:54 -0700 (PDT) |
Ok, i will try it. But here is another question. This looks like some kind of
clipping as you said it, and from signal processing, I remember that there
were some sort of Millican Terms (can be millian too, can`t figure out right
now) with %9 overshoot at the edges of a rectangular signal (resulting from
the addition of many sinusiodal signals). Well if that signal is coming out
at my receiver, (and i am not sure of it too) what could be the reasons?
Thanks again
Henry Hallam-2 wrote:
>
> Hi dbeken,
> I'm very much a radio newbie and don't even have a USRP yet, so take
> this with a pinch of salt.
> It looks like your signal is saturating the receiver, i.e. the output
> power is too high. Try putting an attenuator inline - maybe start
> with 40dB or so? Can you turn down the TX power and see if that
> helps?
>
> Good luck,
>
> Henry
>
>
>
> On Mon, Mar 16, 2009 at 10:58 AM, dbeken <address@hidden> wrote:
>>
>> To give more detail,
>>
>> even in the following simple configuration i cannot receive the exact
>> signal
>> I am sending. I am very new to USRP2 and SDR.
>>
>> My simplified system:
>>
>> http://www.nabble.com/file/p22535780/loop_test.grc.jpg
>>
>> My TX graph:
>>
>> http://www.nabble.com/file/p22535780/graphTx.jpg
>>
>> and finally what I receive:
>>
>> http://www.nabble.com/file/p22535780/graphRX.jpg
>> --
>> View this message in context:
>> http://www.nabble.com/Sending-a-Sinusoidal-Signal-tp22535722p22535780.html
>> Sent from the GnuRadio mailing list archive at Nabble.com.
>>
>>
>>
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>>
>
>
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>
--
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