Re: [Discuss-gnuradio] rx_ofdm Does Not Work Past Synchronizer

[Martin Braun]

On 03/20/2014 05:14 PM, Jonathan Fox wrote:
> So I found the loopback script, tied the ends together with a multiply
> const block and was successful in modding and demodding that sinusoidal
> waveform. Added a UHD source and sink, success again. Then I split the
> process into two separate GRC files, a TX and a RX script. Everything
> works. I am extremely happy right now to see OFDM work. Thank you for
> the nudge in the right direction.
> 
> So the next question I have is why I have success with the hierarchal
> blocks in the loopback script but not so much with rx_ofdm or that
> custom loopback I posted? Even with a binary file source with the
> modulated signal, that rx script won't work. I wouldn't say too terribly
> important but it is interesting to learn how OFDM works. But for what I
> am working on, those hierarchical blocks will suffice.

Well, it's hard to say from a distance, but you could check the output
on the header path after the header/payload demuxer to see what's going on.

M