Re: [Discuss-gnuradio] gr-atsc

[Eric Blossom]

On Fri, Apr 27, 2007 at 02:33:01PM -0400, Chuck Swiger wrote:
> On Fri, 2007-04-27 at 13:06 -0400, Charles Swiger wrote:
> > 
> > That leaves just ONE module, and then we'll be all up to date: the Bit
> > Timing loop.
> > 
> 
> Well, it turns out the bit_timing_loop already works so at this point
> the 2.x gr-atsc is fully functional from antenna to mpeg output (with
> warts, like a segfault in btl-fsd.py at the end of a decoding run).

This is great news!

> I'll put better instructions on how to use it in the
> gr-atsc/src/python/README shortly. The biggest advantage is that now we
> can easily run differnt combinations of modules to spread the work over
> multiple processors, tied together with named pipes.  The most obvious
> improvement is probably using an fpll that takes complex input data.
> Right now we have to interpolate by 3 (interp.py), shift to 5.75Mhz and
> convert to float (xlate.py), then feed the fpll which does another
> shift.
> 
> --Chuck

Eric