Honored Contributor
Honored ContributorMy input is a bpsk signal.
I didn't get the second question. What do you mean by "but for bpsk signal I expect to see constellations of +/- on each I and Q"? I was trying several things before I post this thread... and each one yields to different result... however when I open the loop they all give the same falling slope that I get in matlab if I open the loop. Let's try to eliminate options... 1- Do you recommend using Altera's NCO (First post in the thread) or go on with my DDS (previous post)? 2- I tried to use RRC after mixers instead of CIC... but CIC gave more closer results... what do you think about it? would it be a major cause to the problem? 3- I am scaling down the loop filter output that is used to subtract or add with NCO phi_inc. Am I right?
