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Re: [Discuss-gnuradio] Baseband vs. Carrier freq.

From: Songsong Gee
Subject: Re: [Discuss-gnuradio] Baseband vs. Carrier freq.
Date: Wed, 12 Jan 2011 16:31:16 +0900

Thank you for your answer :)

Can you tell me more detail?

With my understanding, a rectangular pulse from the file source will be an envelope

and by up-conversion, a sinusoidal signal will be in the rectangular pulse?

I want to know more detail on the up-conversion,

Especially, a waveform on the air.

2011/1/12 Nick Foster <address@hidden>

The baseband signal you are transmitting will be upconverted by the
center frequency you specify in the USRP sink. In this case, the
signal's center frequency will be 450MHz. Likewise, the USRP source
center frequency you specify for the receiver will convert that
frequency to baseband for the rest of your receive flowgraph.


On Wed, 2011-01-12 at 15:38 +0900, Songsong Gee wrote:
> I'm wondering whether my flow graph is working correctly.
> I think that my flow graph just send a baseband signal
> Sender
> flow graph / scope plot
> Recevier
> flow graph / scope plot
> Yes, it receives correctly. But my question is
> The sender seems to send just a baseband signal, not a signal whose
> center freq. is not 450 MHz
> I think that it need to be multiplied by sinusoidal signal...
> --
> Seokseong Jeon (aka Songsong Gee)
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Seokseong Jeon (aka Songsong Gee)

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