Re: [Discuss-gnuradio] Loops in graphs? Do we need them?

[Eric Blossom]

On Tue, Feb 08, 2005 at 12:51:00PM +0530, Prateek Dayal wrote:
> Hi,
> 
> I also need to track the phase of a sinusoidal signal for my work on
> NTSC demod. How about applying some kind of linear regression and then
> estimating the phase vs time relationship. As phase varies linearly
> with time, I think that this should be possible.
> 
> Regards,
> 
> Prateek 


In any event, if you need a PLL block, just code it up in C++.
I doubt it'll be more than a page or two of code.  We used one in the ATSC
receiver (GrAtscFPLL.{h,cc} in the 0.9 tarball).

For info on writing blocks, 
see http://www.gnu.org/software/gnuradio/doc/howto-write-a-block.html

Eric