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Measurement Science Review

The Journal of Institute of Measurement Science of Slovak Academy of Sciences

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Volume 18, Issue 6

Issues

Digital Demodulator of the Quadrature Amplitude Modulation Signals

Oleg Chernoyarov
  • International Laboratory of Statistics of Stochastic Processes and Quantitative Finance, National Research Tomsk State University, Lenin Avenue, 36, 634050, Tomsk, Russia
  • Department of Higher Mathematics and System Analysis, Faculty of Engineering and Economics, Maikop State Technological University, Pervomayskaya st. 191, 385000, Maikop, Russia
  • Department of Electronics and Nanoelectronics, Faculty of Electrical Engineering, National Research University “MPEI”, Krasnokazarmennaya st., 14, 111250, Moscow, Russia
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/ Alexey Glushkov
  • Department of Infocommunication Systems and Technologies, Faculty of Radio Engineering, Voronezh Institute of the Ministry of Internal Affairs of the Russian Federation, Patriotov Avenue, 53, 394065, Voronezh, Russia
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/ Vladimir Litvinenko
  • Department of Radio Engineering, Faculty of Radio Engineering and Electronics, Voronezh State Technical University, Moscow Avenue, 14, 394026, Voronezh, Russia
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/ Yuliya Litvinenko
  • Department of Radio Engineering, Faculty of Radio Engineering and Electronics, Voronezh State Technical University, Moscow Avenue, 14, 394026, Voronezh, Russia
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/ Boris Matveev
  • Department of Radio Engineering, Faculty of Radio Engineering and Electronics, Voronezh State Technical University, Moscow Avenue, 14, 394026, Voronezh, Russia
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Published Online: 2018-11-30 | DOI: https://doi.org/10.1515/msr-2018-0032

Abstract

In this paper, the digital algorithm and the device for the demodulation of the quadrature amplitude modulation signals are considered. The fundamental advantages of our approach are simple hardware implementation, minimal number of arithmetic operations required over the signal period as well as the potential interference immunity in the presence of Gaussian noise. The expressions have been found for the error probability and their inaccuracy has been estimated. By means of the statistical simulation methods, the practical interference immunity of the introduced demodulator, together with the influence of phase locking errors have been tested. The introduced demodulator can be implemented either as a device independent from the programmable logic devices, or as an installation unit of the receiver equipment.

Keywords: Quadrature amplitude modulation; coherent signal processing; noise interference; interference immunity; phase locking

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About the article

Received: 2018-04-06

Accepted: 2018-11-03

Published Online: 2018-11-30

Published in Print: 2018-10-01


Citation Information: Measurement Science Review, Volume 18, Issue 6, Pages 236–242, ISSN (Online) 1335-8871, DOI: https://doi.org/10.1515/msr-2018-0032.

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© 2018 Oleg Chernoyarov et al., published by Sciendo. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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