[Discuss-gnuradio] anyone successful in running tx_ofdm and rx_ofdm grc files?

[Achilleas Anastasopoulos]

I am having trouble setting some parameters and getting anything out of it...

In particular

in ofdm_rx

1) is the processing done on an 1 sample per symbol basis at the Scmidl&Cox ?
In that case the input sample rate has to be set to the symbol rate?
(what is called samp_rate in ofdm_tx)

2) In the Header/Payload Demux what is the meaning of the value 3 in
the header symbols parameter?
My guess is that the first two training OFDM symbols are used for
channel estimation and the third OFDM symbol contains in it all info
of the 8-byte=48 bits of the header which is extracted and a message
(what is it?) is fed back to the header/payload demux.
BTW, can someone explain what the default header formatter does; I
couldn't quite get it form the code...

thanks
Achilleas