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Re: [Discuss-gnuradio] About FLL and phase tracking error in narrow band
From: |
Martin Braun (CEL) |
Subject: |
Re: [Discuss-gnuradio] About FLL and phase tracking error in narrow band domodulation |
Date: |
Tue, 8 Jan 2013 10:04:03 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Jan 08, 2013 at 12:27:29AM -0600, Alex Zhang wrote:
> In the gnuradio/gr-digital/python/generic_mod_demod.py, two blocks contains
> the
> code related to the frequency offset correction.
>
> 1. digital.fll_band_edge_cc
>
> I am not familiar with the algorithm employed in this frequency loop locking
> block. Is there any direct reference for this block, such as paper or
> documentation?
https://lists.gnu.org/archive/html/discuss-gnuradio/2012-10/msg00019.html
> 2. digital.constellation_receiver_cb
>
> It has a member function to update the phase and frequecy of the incoming
> samples, digital_constellation_receiver_cb::phase_error_tracking()
>
> Is there any reference for me to understand it more easily. Especially, this
> member function calls
Perhaps this helps?
http://www.trondeau.com/blog/2011/8/13/control-loop-gain-values.html
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)
Dipl.-Ing. Martin Braun
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KIT -- University of the State of Baden-Württemberg and
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