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 ?
This case indicates that scattering can bring about a decreasing of the impacts of cross phase modulation and four waves mixing in the dispersive fiber.
The idea of this method with respect to a DDS is based on the isolation the clock frequency with parasitic phase modulation in the spectrum of the output signal of digital-analog converter with, its comparison with the input clock frequency of the synthesizer (without phase distortions) and the formation of a control signal.
One consequence of phase modulation is angular spectrum aberration, which also describes the phenomenon in the insets of Figure 1.
Byun et al., "All-optical AND gate using probe and pump signals as the multiple binary points in cross phase modulation," Japanese Journal of Applied Physics, vol.
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.
These phase modulation effects have been observed before [43] using nanosecond laser pulses and an experimental set-up shown in Figure 9(a).
Keywords:Self Phase Modulation Tributary Mapping Multiplexing Dispersion Compensation
The 34-year-old, who moved to Durham from his native Hungary in 2004, will start studying the development and chemical application of phase modulation nanoscopy - an advanced form of microscopic imaging using extremely high-resolution technology to examine cells - on October 1.
The methodology includes flip angle and RF sensitivity-based amplitude and phase modulation schemes as modeled by an unconditionally stable, central finite-difference-based, nonlinear Bloch equation solver.