Re: [Discuss-gnuradio] OFDM modulation in tunnel.py example [USRP2 platform]

[Morgan Redfield]

Hi Juan,

It isn't too hard to modify the OFDM tunnel script to use UHD instead
of the old USRP blocks.

You have to change the flow graph in tunnel.py to use new sink and
source blocks and update all of the sample rate and frequency setting
functions.

You can take a look at how I did it here:
https://github.com/mogar/uhd_ofdm/blob/master/tunnel.py

Hope that helps,
Morgan

On Thu, Jun 30, 2011 at 7:07 AM, Juan Ramon Gutierrez <address@hidden> wrote:
> Dear GNU Radio list,
>
> I've being diving into some GNU Radio examples in order to communicate
> two USRP2s (e.g. USRP2 #1 pings USRP2 #2). Following the example
> "tunnel.py", in $GNURADIO_PATH/gnuradio-examples/python/digital, I've
> been able to do it, but with a GMSK/DBPSK/DQPSK modulation scheme.
>
> My goal is to use the tunnel.py example but using a different modulation
> scheme, i.e. OFDM. I've seen the example "tunnel.py" in another
> directory ($GNURADIO_PATH/gnuradio-examples/python/ofdm), which uses a
> OFDM modulation scheme but it seems that it's only working for USRP1.
>
> Is it possible nowadays to use tunnel.py (transmit and receive
> flow-graph in the same USRP2) with OFDM in an USRP2 platform?
>
> Thank you for your help.
>
> My equipement is:
> 2x USRP2s + XCVR2450 daughterboard
> Linux 10.04 (Lucid) - 32 bits
> GNU Radio version 3.3.0 (stable version)
>
> Kind Regards,
>
> Juan Ramon Gutierrez Agullo
>
>
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