quadrature amplitude modulation

from The Free On-line Dictionary of Computing (8 July 2008)
Quadrature Amplitude Modulation

   (QAM) A method for encoding digital data in an analog signal
   in which each combination of phase and amplitude represents
   one of sixteen four bit patterns.  This is required for fax
   transmission at 9600 bits per second.

   (1995-02-02)
    

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