Hi
I am trying to modulate an unconventional signal. Its constellation
points are not as beautiful as QPSK or QAM. I use "chunks to symbols" to map
the constellation points, and then use "polyphase arbitrary resampler" for
pulse shaping, and then I Use a "channel model" to set the clock offset to test
the synchronization effect of "polyphase clock sync". Set the parameters of the
"polyphase clock sync" module according to the parameters of the "QPSK
Modulation and Demodulation Tutorial". I found that it is weak It works, but
because some constellation points are too close, the distinction is not very
obvious. I want to know how to set the parameters to achieve a better
synchronization effect?
In addition, I also need to add frequency offset and multipath
effects later. According to the CMA equalizer in the "QPSK Modulation and
Demodulation Tutorial",it only works on signals that have a constant
amplitude, or modulus. What other existing ones can be easily removed Any
method or module for frequency phase shift and multipath effect of any signal?
Sincerely
Thanks!
