phase modulation


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Related to phase modulation: frequency modulation, amplitude modulation

phase modulation

n. Abbr. pm or p-m
A method of signal transmission in which the phase of a carrier wave is varied to transmit information contained in the signal.

phase modulation

n
(Electronics) a type of modulation, used in communication systems, in which the phase of a radio carrier wave is varied by an amount proportional to the instantaneous amplitude of the modulating signal

phase′ modula`tion



n.
radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.
[1925–30]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phase modulation - modulation of the phase of the carrier wave
modulation - (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase
References in periodicals archive ?
However, optical phase modulation technique has been proposed to increase the capacity and reach in the access, in response to the demand of services and applications in future smart cities.
As it was mentioned previously, there are 2 main goals of this research--investigation of impact of FOPA pump phase modulation and of polarization dependence of the FOPA provided gain on the generated idler spectral components.
Sundberg, "Continuous phase modulation," IEEE Communications Magazine, vol.
Keywords:Self Phase Modulation Tributary Mapping Multiplexing Dispersion Compensation
just used binary phase-only plate to modulate the incident light, while in our work the combination of phase modulation with central block is adopted, and the super-resolution and DOF performances are better.
s6) finally, the calculus of the signal phase modulation law 0(t), using the following well-known equation, namely:
The first improvement is to compensate the range-invariant and residual range-variant phase errors together in the range-compressed time-domain before RCMC, which is used to eliminate the phase modulation errors of the RCM by the greatest extent.
The integrated signal source provides AM, FM, pulse and phase modulation, and with an optional generator interlock relay, allows a 50[ohm] termination to be inserted rather than the signal generator if an interlock loop is open.
This architecture assumes that the baseband modulation is available and can be represented as orthogonal amplitude and phase modulation functions.
For communications signals, this includes AM, FM, phase modulation, multichannel FM/FM signals, single sideband (upper or lower sideband), and various digital modulations.
The concept involves phase modulation of the interrogating microwave field, rather than the traditional frequency modulation used in most atomic clocks.
If the amplitude term VP is varied, the resulting modulation is called as Amplitude Modulation (AM), if f term is varied, the resulting modulation is called as Frequency Modulation (FM), and if F is varied, the resulting modulation is called as Phase Modulation (PM).