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Re: [Discuss-gnuradio] AWGN using E310
From: |
Marcus Müller |
Subject: |
Re: [Discuss-gnuradio] AWGN using E310 |
Date: |
Thu, 5 Jan 2017 20:22:25 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 |
Hi John,
sure! Just use the noise source with a noise variance (amplitude) low
enough to allow for the resulting amplitude to very rarely exceed 1.0
(because that would lead to artifacts/non-gaussian distribution) (or,
better yet, use the fast noise source, which preallocates a definable
amount of noise that it then plays over and over again), and connect it
to the USRP sink.
Notice that the E310 isn't sold calibrated – you'll need to calibrate
the noise power generated using e.g. a calibrated spectrum analyzer
yourself.
Best regards,
Marcus
On 01/05/2017 08:18 PM, John B. Wood wrote:
> Hello, all. This may be a "RTFM" question but with the stock tools in
> GRC (or a non-GRC generated .py file) can a gaussian white noise
> generator be readily implemented on an Ettus E310 to provide a
> broadband RF noise output (some level in dBW/Hz) over a specified
> bandwidth (within the capabilities of the E310) that can be used to
> evaluate noise performance of radio receivers? If not feasible then I
> will probably have to purchase a noise generator. Thanks for your time
> and comment. Sincerely,
>
>
> J. Wood
> U.S. Naval Research
> Laboratory
>
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