phase modulation

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Related to Phase-shift keying: BPSK

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 ?
1) The report further notes that phase-shift keying (PSK) and/or differential PSK (DPSK) were introduced to increase throughput to 40 Gb/ s.
The phase-shift keying technique belongs to group of modulations with carrier wave modulation [6, 7].
The AT86RF215 offers superior flexibility by supporting a variety of data rates with three modulation schemes: multi-rate and multi-regional frequency shift keying (MR-FSK), orthogonal frequency division multiplexing (MR-OFDM), as well as offset quadrature phase-shift keying (MR-O-QPSK).
Four Nyquist-shaped 25-GBd quadrature phase-shift keying (QPSK) modulation channels were successfully multiplexed to a 200-Gb/s super-channel.
7-Gb/s Differential Phase-Shift Keying Without Pulse Carver", JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL.
Chris Xu, Xiang Liu, Xing Wei Differential Phase-Shift Keying for High Spectral Efficiency Optical Transmissions// IEEE Journal of Selected Topics in Quantum Electronics, 2004.
The key technical advance operating behind 100-Gbit/s-per-channel technology is the ability to detect incoming data encoded using the optical industry's most spectrally efficient modulation technique, called polarization multiplexed Quadrature Phase-Shift Keying, or PM-QPSK.
In its basic form, its radio employs digital phase-shift keying (PSK) data modulation--a highly power-efficient scheme.
Note that the difference between the required Eb/No to achieve a particular bit-error rate with phase-shift keying (antipodal signaling) is 3-dB less than required for frequency-shift keying (orthogonal signaling).
Higher throughput can be provided to users by switching from lower order modulations, such as quadrature phase-shift keying, to higher order modulations, such as 16 quadrature amplitude modulation or higher.
The basic possibilities are amplitude-shift keying (ASKe, phase-shift keying (PSK) and frequency-shift keying (FSK).
Each of the 7 cores carried 160 polarization-division multiplexed quadrature phase-shift keying (PDM-QPSK) channels at 107-Gb/s on a 50-GHz grid, resulting in an aggregate spectral efficiency of 14 b/s/Hz.