(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.
noun, Mathematics. 1. the insoluble problem of constructing, by the methods of Euclidean geometry, a square equal in area to a given circle.
[kwod-ruh l] /ˈkwɒd rəl/ noun 1. a square stone, brick, or tile.
/kwɒˈdrɛlə/ noun 1. (Austral) four nominated horseraces in which the punter bets on selecting the four winners
[kwo-dren-ee-uh l] /kwɒˈdrɛn i əl/ adjective 1. occurring every four years: a quadrennial festival. 2. of or lasting for four years: a quadrennial period. noun 3. an event occurring every four years, as an anniversary or its celebration. /kwɒˈdrɛnɪəl/ adjective 1. occurring every four years 2. relating to or lasting four years noun 3. a […]