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

[Marcus Müller]

Hi Gabriele,
if there is no output, chances are the receiver side packet detector
doesn't see any valid packets.
Make sure tx and rx parameters match, and adjust the RX gain. Make sure
no under/overflows happen. There's quite a lot of things that can go
wrong in a real-world transceiver, but these are the most likely to
happen in my experience.

Greetings,
Marcus

On 06/26/2015 12:54 PM, Gabriele Galiero wrote:
> Thanks Marcus and Martin. I finally increased the sample rate up to 1
> Msps and decreased the amplitude multiplier. Now I can see a clear ofdm
> spectrum with no distortion at all.
>
> Did some of you tried file transmission from one end to the other? I did
> it for GMSK before. Now when it comes ofdm and I open the receiving file
> while transmitting there is no printed information in the received file.
>
> In that configuration I replaced the random source by a file source and
> a file sink after constellation decoder.
>
> Again thanks for your help. It was so useful
>