digital modulation
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- The process of varying one or more parameters of a carrier wave as a function of two or more finite and discrete states of a signal. 2. The process by which some characteristic (frequency, phase, amplitude, or combinations thereof) of a carrier frequency is varied in accordance with a digital signal, e.g., one consisting of coded pulses or states. [47CFR]
ATIS - Cite This Source - This Definition - adaptive differential pulse-code modulation (ADPCM), carrier (cxr), chirping, Di Group, hop, multipulse test signal, pulse-amplitude modulation (PAM), pulse carrier, pulse-duration modulation (PDM), pulse-frequency modulation (PFM), pulse-interval modulation, pulse-length modulation, pulse link repeater (PLR), pulse-position modulation (PPM), pulse-repetition-rate modulation, pulse-time modulation (PTM), pulse-width modulation (PWM), pulsed FM systems, sub-band adaptive differential pulse code modulation (SB-ADPCM)