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PROPOSALS FOR MANAGEMENT OF THE TRANSMISSION SPEED AND NOISE IMMUNITY OF SIGNALS WITH PERMUTATION FREQUENCY MODULATION
DOI: 10.36724/2072-8735-2020-14-6-20-26
Sergey V. Dvornikov, Military academy of communications named after Marshal of the Soviet Union S.M. Budyonny, St-Peterburg, Russia, practicdsv@yandex.ru
Anton A. Balykov, Military academy of communications named after Marshal of the Soviet Union S.M. Budyonny, St-Peterburg, Russia, etomoiadres@mail.ru
Abstract
The article is dedicated to the study of signals with permuted frequency modulation of PFM-m/k with encoding at the physical level with a constant weight code for low-speed noise-resistant transmission of digital information over the ionospheric radio channel. The relevance of this research direction is shown. The purpose of the work is to develop proposals for controlling the parameters of signal-code structures based on permutation frequency modulation, which provides a compromise choice between speed and noise immunity when transmitting information over an ionospheric radio channel in a complex signal-noise environment. An approach is presented to select the number of simultaneously used tonal reference vibrations k for encoding messages depending on the interference situation in order to achieve the maximum possible transmission speed while meeting the reliability requirement. The rational choice of the number of tonal reference vibrations and symbolic speed for effective use of energy and frequency resources of the radio line is justified. The justification of the proposed main stages of management is given, the results of analytical research and simulation modeling are presented, confirming the validity of the theoretical conclusions made.
Keywords: permutation frequency modulation, code with constant weight, ionosphere radio channel, digital signal processing, energy efficiency, spectral efficiency, noise immunity, signal-code construction.
References
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Information about authors:
Sergey V. Dvornikov, Dr. habil. Of Engineering Sciences, Full Professor. Professor of the Department of radiocommunication. Military academy of communications named after Marshal of the Soviet Union S.M. Budyonny, St-Peterburg, Russia
Anton A. Balykov, the postgraduate student of the Department of radio communication. Military academy of communications named after Marshal of the Soviet Union S.M. Budyonny, St-Peterburg, Russia