Re: [Discuss-gnuradio] Communication problems between 2 USRP's

[Tom Rondeau]

On Fri, Aug 7, 2015 at 5:53 PM, John Garrick <address@hidden> wrote:

Hi Tom,
Attached is the picture that I have sent you previously. I have somewhat
adjusted the receiver gain for the signal to be a flat one. As you have
mentioned before about how to apply the gain settings to the benchmark
scripts, how do you suggest I do that? Also, how do I change the
transmitting gain setting. If I do this, will I be able to receive the
data packet correctly?. I mean, I need to get n_right=1, that is the CRC
check needs to be right. Please suggest as to what I can do.
Thanks.

Regards,
John

Attachments:
http://www.ruby-forum.com/attachment/10970/Screenshot_from_2015-08-07_16_49_26.png

The problem is that I still don't see a signal in that screen shot you're sending me.

To adjust the gains and amplitudes, in the benchmark scripts, use the '-h' flag to get help to see what options you can pass to it.

I cannot tell you if you will get the packets received correctly, and certainly not all of them will be. There is no error correction on that link, so even 1 bit wrong in a packet will force that entire packet to be marked as false because the CRC check will fail.

In the end, these aren't so much GNU Radio questions but radio questions, so then it's how you work with GNU Radio to address them. You have to work on sample rate, frequency offset, gains, etc. etc. The tools are all there with the sliders in the GUI apps and the command-line arguments for the benchmark programs.

Tom