plural of quadrature amplitude modulation

(radio) A modification of amplitude modulation that modulates the output signal on a single sideband only, as opposed to both sidebands.

(radio) A modulation scheme that conveys data by applying amplitude modulation to two carrier waves at once. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature carriers. Commonly abbreviated QAM.

plural of single-sideband modulation

A device for the pulse modulation of a radio-frequency carrier signal

an electronic circuit that causes the phase angle of a modulated wave to vary in accordance with the modulating signal

(algebra) A module that has a basis. Equivalently, a module consisting of n-tuples of ring elements with no extra identities. (Then the number n is said to be its rank.) Equivalently, a direct sum whose summands are all the same ring. (The quantity of summands may be more than two.)

plural of R-module

plural of phase modulator

plural of pulse modulator