Re: [Discuss-gnuradio] gr-atsc progress

[Charles Swiger]

On Wed, 2007-04-25 at 08:12 -0700, Eric Blossom wrote:
> On Wed, Apr 25, 2007 at 11:02:13AM -0400, Chuck Swiger wrote:
> > The 2.x gr-atsc seems to be closer to working, at least the flow control
> > (forecast,consume,etc) creates the exact to-the-byte correct quantity of
> > output with no loss of sync (since it keys on easy to discern -5/+5), on
> > 120MB size output files.
> > 
> > However the *quality* of the output is only about 65 percent correct,
> > which is not suprising if you compare the output of a working (0.9)
> > equalizer:
> > 
> Did you port the "right" bit timing loop?
> 
> As I recall, I tried 2 or 3 different approaches.  Without checking
> the old code, I'm not sure which one I ended up using.
> 

Yes, 0.9 uses GrAtscBitTimingLoop3, which uses atsc_sssr, of which
atsci_sssr in the new stuff is a carbon copy.

There's also two equalizer modules, lms and lms2 (and nop).  I'll look
closer at those tonight also.

--Chuck