Hello,
I am guessing that the primary difference between what this tool does and my
current
python script is the 'uniform noise' part.
But, I have searched all over and cannot find any description of how I might
set that API from my python script.
I think the pertinent block of my code is:
##################################################
# Blocks
##################################################
self.osmosdr_sink_0 = osmosdr.sink( args="numchan=" + str(1) + " " + ""
)
self.osmosdr_sink_0.set_sample_rate(1e6 * sample_mod)
self.osmosdr_sink_0.set_center_freq(freq, 0)
self.osmosdr_sink_0.set_freq_corr(0, 0)
self.osmosdr_sink_0.set_gain(14, 0)
self.osmosdr_sink_0.set_if_gain(47, 0)
self.osmosdr_sink_0.set_bb_gain(20, 0)
self.osmosdr_sink_0.set_antenna("", 0)
self.osmosdr_sink_0.set_bandwidth(20e6, 0)
Do you know how I can set the waveform to uniform noise? And for
that matter, do you know what the default is, since I guess that is
what I am using currently?
Thanks,
Ben
On 4/17/19 6:21 AM, Mike Walters wrote:
Hi Ben,
The HackRF should be quite capable of doing that. I recommend using the `osmocom_siggen` command-line tool that comes with gr-osmosdr. Run `osmocom-siggen -s
20M` for full sample-rate, pick your frequency, set to uniform noise, set whatever bandwidth you want, and raise the gains.
I've just tested it out here, here are a couple of pictures of my setup so you
know roughly what to expect: https://imgur.com/a/DcgIZPl
Cheers,
Mike
On Wed, 17 Apr 2019 at 14:04, Ben Greear <gree...@candelatech.com
<mailto:gree...@candelatech.com>> wrote:
Hello,
We are trying to use a hackrf to generate noise to test
that our wifi radio properly does CCA and quits transmitting
when the on-channel noise is above a certain threshold (about -70dB)
In initial testing, however, our radio appears to totally ignore
the RF noise from the hackrf. One reason might be that the hackrf
is outputting a very narrow band of noise (about 500Khz), where we might
need a full 20Mhz of noise to make CCA work reliably. Is there
a good way to make the hackrf output a wider band of noise?
Another thought I had is that maybe pure RF noise is not enough
and there has to be some sort of wifi-like modulation to make CCA work?
(And of course, our AP implementation could be busted...we will
continue to try to tie-break that.)
And, does anyone have any experience with doing this type of testing
that they can share?
Thanks,
Ben
--
Ben Greear <gree...@candelatech.com <mailto:gree...@candelatech.com>>
Candela Technologies Inc http://www.candelatech.com
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--
Ben Greear <gree...@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
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