Hi Kevin,
Perhaps it might help to use the ITU three symbol Classification of
Emissions?
The first symbol considers the main carrier modulation with letters such
as A = DSB AM, B = independent sidebands, etc. This would give you the
AM modes and the F = FM and G = PM modulation types.
Then
There are three characteristics you can change on an RF signal:
amplitude (CW, AM, SSB, etc), phase, and frequency. Even then if you
squint a little phase and frequency modulation become basically the
same. So the fundamental methods of modulating a signal are all known
and used. Nothing new
