Doubts About the Polyphase Clock Sync Block

2023-04-29 Thread Saurav Roy
Dear all, I have a few questions about the Polyphase Clock Sync Block in reference to https://github.com/gnuradio/gnuradio/blob/master/gr-digital/lib/pfb_clock_sync_ccf_impl.cc 1. line no 67:d_damping = 2 * d_nfilters; --> d_nfilters=32, should this not be around 0.707 2. line no

Re: Σχετ: Re: QAM constellation script

2023-04-29 Thread Marcus Müller
Hi George, that flow graph doesn't frequency-hop :) It does something different, rather cool. Please correct me if I got anything wrong about your self-written blocks below: What you do is: "VCO generator": Produces always the same 10240-long vector with pseudo-random values, "Repeat": R

Σχετ: Re: Σχετ: Re: QAM constellation script

2023-04-29 Thread George Katsimaglis
Hi Marcus , Στάλθηκε από το Ταχυδρομείο Yahoo σε Android Στις Σάβ, 29 Απρ, 2023 στις 14:23, ο χρήστηςMarcus Müller έγραψε: Hi George, that flow graph doesn't frequency-hop :) It does something different, rather cool. Please correct me if I got anything wrong about your self-written bloc

Re: Doubts About the Polyphase Clock Sync Block

2023-04-29 Thread Jeff Long
1. Given that set_damping_factor() requires the value to be in [0.0, 1.0], 2 * d_nfilters looks quite wrong. I wonder if it was supposed to be 2.0 / d_nfilters. This is probably overridden by a call to set_damping_factor() in a typical flowgraph. I'm not familiar enough with the block to comment o