Low complexity demodulator for BFSK waveforms based on polygonal approximation

  • Jorge Torres-Gómez Instituto Superior Politécnico José Antonio Echeverría
  • Fidel Hernández-Montero Universidad de Mondragón
  • Joachim Habermann University of Applied Science Technische Hochschule Mittelhessen (THM)
Keywords: BFSK, digital demodulation, polygonal approximation

Abstract

The  present  article  relates  in  general  to  digital  demodulation  of  Binary  Frequency  Shift  Keying  (BFSK  waveform).  The  objective  of  the  present  research is to obtain a new processing method for demodulating BFSK-signals in order to reduce hardware complexity in comparison with other reported. The solution proposed here makes use of the theories of matched filters and curve segmentation. The article describes the integration and configuration of a Sampler Correlator and polygonal segmentation blocks in order to obtain a digital receiver for properly demodulating the signal received. The proposed solution  is  shown  to  reduce  dramatically  the  complexity  in  hardware  and  has a better performance regarding noise in comparison with other reported. Theoretical  details  concerning  limits  of  applicability  are  also  given  by  closed-form  expressions.  Simulation  experiments  are  illustrated  to  validate  the overall performance.

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Author Biographies

Jorge Torres-Gómez, Instituto Superior Politécnico José Antonio Echeverría

Departamento de Telecomunicaciones y Telemática

Fidel Hernández-Montero, Universidad de Mondragón

Grupo de investigación Teoría de la Señal y Comunicaciones

Joachim Habermann, University of Applied Science Technische Hochschule Mittelhessen (THM)

Department of Electrical Engineering and Information Technology, professor

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Published
2015-02-18
How to Cite
Torres-Gómez J., Hernández-Montero F., & Habermann J. (2015). Low complexity demodulator for BFSK waveforms based on polygonal approximation. Revista Facultad De Ingeniería Universidad De Antioquia, (74), 50-59. Retrieved from https://revistas.udea.edu.co/index.php/ingenieria/article/view/19422