Definitions for phase-shift keying
phase-shift key·ing

WiktionaryRate this definition:0.0 / 0 votes

1. phase-shift keyingnoun

   A form of phase modulation in which digital information is transmitted through discrete changes of the phase of a carrier wave.

WikipediaRate this definition:0.0 / 0 votes

1. Phase-shift keying

   Phase-shift keying (PSK) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency reference signal (the carrier wave). The modulation is accomplished by varying the sine and cosine inputs at a precise time. It is widely used for wireless LANs, RFID and Bluetooth communication. Any digital modulation scheme uses a finite number of distinct signals to represent digital data. PSK uses a finite number of phases, each assigned a unique pattern of binary digits. Usually, each phase encodes an equal number of bits. Each pattern of bits forms the symbol that is represented by the particular phase. The demodulator, which is designed specifically for the symbol-set used by the modulator, determines the phase of the received signal and maps it back to the symbol it represents, thus recovering the original data. This requires the receiver to be able to compare the phase of the received signal to a reference signal – such a system is termed coherent (and referred to as CPSK). CPSK requires a complicated demodulator, because it must extract the reference wave from the received signal and keep track of it, to compare each sample to. Alternatively, the phase shift of each symbol sent can be measured with respect to the phase of the previous symbol sent. Because the symbols are encoded in the difference in phase between successive samples, this is called differential phase-shift keying (DPSK). DPSK can be significantly simpler to implement than ordinary PSK, as it is a 'non-coherent' scheme, i.e. there is no need for the demodulator to keep track of a reference wave. A trade-off is that it has more demodulation errors.

WikidataRate this definition:0.0 / 0 votes

1. Phase-shift keying

   Phase-shift keying is a digital modulation scheme that conveys data by changing, or modulating, the phase of a reference signal. Any digital modulation scheme uses a finite number of distinct signals to represent digital data. PSK uses a finite number of phases, each assigned a unique pattern of binary digits. Usually, each phase encodes an equal number of bits. Each pattern of bits forms the symbol that is represented by the particular phase. The demodulator, which is designed specifically for the symbol-set used by the modulator, determines the phase of the received signal and maps it back to the symbol it represents, thus recovering the original data. This requires the receiver to be able to compare the phase of the received signal to a reference signal — such a system is termed coherent. Alternatively, instead of operating with respect to a constant reference wave, the broadcast can operate with respect to itself. Changes in phase of a single broadcast waveform can be considered the significant items. In this system, the demodulator determines the changes in the phase of the received signal rather than the phase itself. Since this scheme depends on the difference between successive phases, it is termed differential phase-shift keying. DPSK can be significantly simpler to implement than ordinary PSK since there is no need for the demodulator to have a copy of the reference signal to determine the exact phase of the received signal. In exchange, it produces more erroneous demodulation.

How to pronounce phase-shift keying?

1. Alex

   US English

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   Mark

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   Daniel

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   Australian

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   Neerja

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How to say phase-shift keying in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of phase-shift keying in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of phase-shift keying in Pythagorean Numerology is: 2

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Phase-shift_Keying
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Phase-shift_Keying
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=phase-shift keying