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Re: [Discuss-gnuradio] running OFDM on USRP2

From: bin zan
Subject: Re: [Discuss-gnuradio] running OFDM on USRP2
Date: Wed, 31 Mar 2010 09:30:17 -0400

  Yes, we use usrp2_fft.py to find and set the property rx_gain first.


On Wed, Mar 31, 2010 at 1:11 AM, Ian Holland <address@hidden> wrote:
I have been inactive on this for some time due to other issues with my
USRP2s. However, I have been able to look into this again now, with
Veljko's modified code. I run as root, and also had the realtime
scheduling enabled, however on the receive side I see nothing until the
transmitter stops transmitting, at which time I see timeout.

This seems to be the same problem that Bin had (except without the
realtime scheduling issue). Bin, did you end up resolving this issue?



-----Original Message-----
From: discuss-gnuradio-bounces+ian.holland=rlmgroup.com.au@gnu.org
[mailto:discuss-gnuradio-bounces+ian.holland=rlmgroup.com.au@gnu.org] On
Behalf Of Tom Rondeau
Sent: Thursday, 4 February 2010 11:56 PM
To: bin zan
Cc: address@hidden
Subject: Re: [Discuss-gnuradio] running OFDM on USRP2

On Wed, Feb 3, 2010 at 1:55 PM, bin zan <address@hidden> wrote:
> Hi Tom,
> In our case, even with script from Veljko, the OFDM receiver doesn't
> any thing. And we always see "usrp2: failed to enable realtime
> Do you think that will cause problem?
> Thanks,
> Bin

No, that message is just telling you that you don't have permissions
to run it at the highest priority. It means you won't be able to run
as fast, but that shouldn't be the cause of your problems.


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