Re: [Discuss-gnuradio] Costas Loop

[Tom Rondeau]

Trond Danielsen wrote:
> 2007/4/2, address@hidden <address@hidden>:
>> Hi, I'm an italian student.
>> I'm studying about GnuRadio and Usrp.
>> I would like to know informations about Costas loop's coefficients.
>> Alpha and Beta. Where can I find some inform
> 
> Taken from the header file:
> * All settings max_freq and min_freq are in terms of radians per sample,
> * NOT HERTZ.  Alpha is the phase gain (first order, units of radians
> per radian)
> * and beta is the frequency gain (second order, units of radians per
> sample per radian)
> 
> For a good theoretical and practical description of the parameters
> look here: http://archive.chipcenter.com/dsp/DSP010531F1.html

I also just updated the Doxygen comments for the Costas loop code. If
you build the documentation from the current trunk, it should provide
some more helpful information to using it.

Tom