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Re: [Discuss-gnuradio] OFDM example from gr-digital with UHD


From: Marcus Müller
Subject: Re: [Discuss-gnuradio] OFDM example from gr-digital with UHD
Date: Tue, 30 Jun 2015 22:49:39 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0

Jose,

we're talking about this flow graph, right?
http://gnuradio.4.n7.nabble.com/file/n54534/ofdm_tx.png

In this flow graph, you're trying to find the individual symbols in time
domain; that's not possible, they only exist clearly distinguishable in
frequency. That is why there is an DFT (in this implementation, the FFT)
in OFDM!

Best regards,
Marcus

On 06/30/2015 09:12 PM, Jose Perez wrote:
> So ... Is it possible to see the Constellation points like QPSK in this
> flowgraph?
> Sorry for so many questions!
>
> Thanks Martin!
>
>
>
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> http://gnuradio.4.n7.nabble.com/OFDM-example-from-gr-digital-with-UHD-tp54446p54537.html
> Sent from the GnuRadio mailing list archive at Nabble.com.
>
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