Difference between a new and old Costas loop

GNU Radio
1

Hello for all

I Have my program with old gr.costas_loop_cc and I would like to adapt
it to the new version of GNURADIO 3.6.1 of Yesterday :slight_smile:

My old costas loop present like that :

gr.costas_loop_cc(0.05, # PLL first order gain

0.00025, # PLL second order gain

0.05, # Max frequency offset rad/sample

-0.05, # Min frequency offset rad/sample

2) # BPSK

My old code contain 5 parameters and in the new bloc we have just 2
parameters, can you give me some explanations about the difference
between a old and a new one and what is the value of the parameters to
use to replace the old one?

Thank you for all.

2

Hello,

This Article may help out, about loop bandwidth and all.

http://gnuradio.squarespace.com/blog/2011/8/13/control-loop-gain-values.html

Regards,
Sreenath Kambala
[email protected]

3

Thank you for the link.