Re: [Discuss-gnuradio] Using benchmark_ofdm.py & gr_plot_ofdm.py

[Eric Blossom]

On Wed, Feb 04, 2009 at 07:26:33PM +0100, Jérémy Skelton wrote:
> Hi,
>
> I would like to have some comments about the resulting plot I had :
> http://www.skelton.eu.org/Image%201.png
>
> Secondly, I would like to know exactly what is the meaning of the Symbol 
> number on top of the picture. In my mind, a symbol should be one element 
> from the constellation.

That would be the case something like QAM, but with OFDM, there's a
constellation point for each bin of the FFT.  The symbols are quite long.

> Then, why is the time scale going to at least 200s as I only ran the  
> simulation for a few secondes ?

Not sure.  Have you looked at the code to see what it's actually plotting?

Eric