Revista 28 - 3

Published

2008-09-01

Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes

Estudio y comparación en eficiencia espectral y probabilidad de error de los esquemas de modulación GMSK y DBPSK

DOI:

https://doi.org/10.15446/ing.investig.v28n3.15123

Keywords:

spectrum efficiency, DBPSK modulation, GMSK modulation, error probability (en)
eficiencia espectral, modulación DBPSK, modulación GMSK, probabilidad de error (es)

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Authors

  • Juan Mario Torres Nova ANDCOM Ltda.
  • Hernán Paz Penagos Escuela Colombiana de Ingeniería “Julio Garavito”
Gaussian minimum shift keying (GMSK) and differential binary phase shift keying (DBPSK) are two digital modulation schemes which are -frequently used in radio communication systems; however, there is interdependence in the use of its benefits (spectral efficiency, low bit error rate, low inter symbol interference, etc). Optimising one parameter creates problems for another; for example, the GMSK scheme succeeds in reducing bandwidth when introducing a Gaussian filter into an MSK (minimum shift ke-ying) modulator in exchange for increasing inter-symbol interference in the system. The DBPSK scheme leads to lower error pro-bability, occupying more bandwidth; it likewise facilitates synchronous data transmission due to the receiver’s bit delay when re-covering a signal.
GMSK (Gaussian Minimum Shift Keying) y DBPSK (Differential Binary Phase Shift Keying) son dos esquemas de modulación digi-tal usados frecuentemente en los sistemas de comunicaciones vía radio; sin embargo, existe interdependencia en el aprovecha-miento de sus beneficios (eficiencia espectral, baja tasa de error de bit, baja interferencia intersímbolos, etc.); es decir, la optimi-zación de un parámetro acarrea problemas en otro; por ejemplo, el esquema GMSK logra reducir el ancho de banda al intro-ducirle un filtro gaussiano a un modulador MSK (Minimum Shift keying) a cambio de incrementar la interferencia intersímbolos en el sistema. Por su parte, el esquema DBPSK obtiene menor probabilidad de error, ocupando mayor ancho de banda; así mis-mo, facilita la transmisión de los datos de forma síncrona debido al retardo de un bit que tiene el receptor al recuperar la señal.

References

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How to Cite

APA

Torres Nova, J. M. and Paz Penagos, H. (2008). Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes. Ingeniería e Investigación, 28(3), 75–80. https://doi.org/10.15446/ing.investig.v28n3.15123

ACM

[1]
Torres Nova, J.M. and Paz Penagos, H. 2008. Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes. Ingeniería e Investigación. 28, 3 (Sep. 2008), 75–80. DOI:https://doi.org/10.15446/ing.investig.v28n3.15123.

ACS

(1)
Torres Nova, J. M.; Paz Penagos, H. Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes. Ing. Inv. 2008, 28, 75-80.

ABNT

TORRES NOVA, J. M.; PAZ PENAGOS, H. Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes. Ingeniería e Investigación, [S. l.], v. 28, n. 3, p. 75–80, 2008. DOI: 10.15446/ing.investig.v28n3.15123. Disponível em: https://revistas.unal.edu.co/index.php/ingeinv/article/view/15123. Acesso em: 20 mar. 2025.

Chicago

Torres Nova, Juan Mario, and Hernán Paz Penagos. 2008. “Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes”. Ingeniería E Investigación 28 (3):75-80. https://doi.org/10.15446/ing.investig.v28n3.15123.

Harvard

Torres Nova, J. M. and Paz Penagos, H. (2008) “Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes”, Ingeniería e Investigación, 28(3), pp. 75–80. doi: 10.15446/ing.investig.v28n3.15123.

IEEE

[1]
J. M. Torres Nova and H. Paz Penagos, “Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes”, Ing. Inv., vol. 28, no. 3, pp. 75–80, Sep. 2008.

MLA

Torres Nova, J. M., and H. Paz Penagos. “Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes”. Ingeniería e Investigación, vol. 28, no. 3, Sept. 2008, pp. 75-80, doi:10.15446/ing.investig.v28n3.15123.

Turabian

Torres Nova, Juan Mario, and Hernán Paz Penagos. “Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes”. Ingeniería e Investigación 28, no. 3 (September 1, 2008): 75–80. Accessed March 20, 2025. https://revistas.unal.edu.co/index.php/ingeinv/article/view/15123.

Vancouver

1.
Torres Nova JM, Paz Penagos H. Studying and comparing spectrum efficiency and error probability in GMSK and DBPSK modulation schemes. Ing. Inv. [Internet]. 2008 Sep. 1 [cited 2025 Mar. 20];28(3):75-80. Available from: https://revistas.unal.edu.co/index.php/ingeinv/article/view/15123

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Copyright (c) 2008 Juan Mario Torres Nova, Hernán Paz Penagos

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