on 07-02-2012 04:30
some info on QAM
or the really basic -
A QAM technique that produces 256 discrete states, each state representing 8 bits of information. The most complex of common QAM techniques.
A QAM technique that produces 64 discrete states, each state representing 6 bits of information.
then you've also got -
quadrature phase-shift keying. A phase modulation technique for representing digital information. QPSK produces four discrete states, each state representing two bits of information.