Quadrature PSK (QPSK) code[1] 

Description

Also known as quadriphase PSK, 4-PSK, or 4-QAM. Quaternary encoding into a constellation of four points distributed equidistantly on a circle. For the case of \(\pi/4\)-QPSK, the constellation is \(\{e^{\pm i\frac{\pi}{4}},e^{\pm i\frac{3\pi}{4}}\}\).

Realizations

Japanese and North American digital cellular and personal systems [2].Telephone-line modems: 1962 Bell 201 and international standard V.24 [3].

Parents

References

[1]
P. A. Baker, “Phase-modulation data sets for serial transmission at 2,000 and 2,400 bits per second”, Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics 81, 166 (1962) DOI
[2]
K. Feher, “Modems for emerging digital cellular-mobile radio system”, IEEE Transactions on Vehicular Technology 40, 355 (1991) DOI
[3]
International Telecommunication Union-T, Recommendation V.24: List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE), 1988
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Zoo Code ID: qpsk

Cite as:
“Quadrature PSK (QPSK) code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2022. https://errorcorrectionzoo.org/c/qpsk
BibTeX:
@incollection{eczoo_qpsk,
  title={Quadrature PSK (QPSK) code},
  booktitle={The Error Correction Zoo},
  year={2022},
  editor={Albert, Victor V. and Faist, Philippe},
  url={https://errorcorrectionzoo.org/c/qpsk}
}
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Permanent link:
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Cite as:

“Quadrature PSK (QPSK) code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2022. https://errorcorrectionzoo.org/c/qpsk

Github: https://github.com/errorcorrectionzoo/eczoo_data/tree/main/codes/classical/spherical/modulation/qpsk.yml.