[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] noise level estimation
From: |
Martin Braun |
Subject: |
Re: [Discuss-gnuradio] noise level estimation |
Date: |
Mon, 9 Feb 2009 12:49:00 +0100 |
User-agent: |
Mutt/1.5.17 (2007-11-01) |
On Sun, Feb 08, 2009 at 07:36:28PM -0500, Ran Tian wrote:
> HI,
> Could anyone help me with noise level Estimation using the GNU Radio block
> gr.null_source (float [gr_complex])
> I just want to send a constant zero signal an drecord the output.
> How to write this simple flow graph?
Probably best not to write it at all. Just assign a variable the value
0. If you use this as an estimator, it will have exactly the same mean
and variance as the null source [1].
But seriously, I assume you mean something else. I recommend reading
http://gnuradio.org/trac/wiki/Tutorials/WritePythonApplications
that, should cover the basics (assuming you want to use Python).
Martin
[1] They are both zero, by the way.
--
Dipl.-Ing. Martin Braun Phone: +49-(0)721-608 3790
Institut fuer Nachrichtentechnik Fax: +49-(0)721-608 6071
Universitaet Karlsruhe (TH) http://www.int.uni-karlsruhe.de/
unnamed.sig
Description: PGP signature