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Re: [Discuss-gnuradio] gr_clock_recovery_mm_cc::slicer_45deg...

From: Tom Rondeau
Subject: Re: [Discuss-gnuradio] gr_clock_recovery_mm_cc::slicer_45deg...
Date: Thu, 08 Oct 2009 08:50:54 -0700
User-agent: Thunderbird (X11/20090817)

Mattias Kjellsson wrote:
Hi list,

I have two question regarding slicer_45deg(gr_complex sample) defined in

What is it, and why is it there? Does it have something to do with
bpsk/qpsk, similar to what has been implemented for the phase- detector
in gr_costas_loop_cc? I'm asking, because I can't really see where it is
used. The only other place I could find it in was in gr_lms_dfe_cc,
which had it's own implementation of the same function...

Best regards
//Mattias Kjellsson

Yes, it's used for the phase rotation to slice on, depending on how you want to slice a QPSK symbol. It's not used right now, but it's there in case someone wants to change the slicing rotation.


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