• Andrii Grekhov National Aviation University
  • Vasil Kondratiuk National Aviation University
  • Anton Ermakov National Aviation University
  • Evgen Chernyuk National Aviation University



OFDM channel, transmitter nonlinearity, unmanned aerial vehicle communication channel


Purpose: 1) to develop a model of a communication channel of an unmanned aerial vehicle "UAV-Ground station" with adaptive modulation and orthogonal frequency division of channels; 2) to calculate the channel parameters with different types of fading for different levels of satellite transponder nonlinearity. Method: MATLAB Simulink software was used to simulate the channel operation. Results: Based on the IEEE 802.16d standard, a realistic model of the communication channel of the unmanned aerial vehicle "UAV-Ground Station" was developed, which is used to estimate the channel parameters. The channel model with adaptive modulation consists of a source of information, a transmitter, a downlink channel with fading, and a terrestrial station receiver. Dependences of the signal-to-noise ratio of the terrestrial receiver on the signal-to-noise ratio in the channel down for different types of nonlinearity of the unmanned aerial transmitter, various modulations (BPSK, QPSK, 16QAM, 64QAM), various types of fading are obtained. The signal constellations of the received signals for different Doppler frequency shifts are compared. Conclusion: The developed model allows determining the conditions under which the channel is "open" for a given type of a modulation and a data rate. The proposed approach can be considered as a method for estimating the parameters of the satellite communication channel of an unmanned aerial vehicle with fading.

Author Biographies

Andrii Grekhov, National Aviation University

Doctor of Physics and Mathematics (1990). Professor (1991). Expert of EUROCONTROL for ADS-B systems.

Department of Air Navigation Systems, National Aviation University, Kyiv, Ukraine.

Education: Physical Department of the Kyiv State Taras Shevchenko University, Ukraine (1973), M.Sc. Degree with Honors confirming qualification of Physicist Theorist.

Research area: satellite communications and information channels, computer modeling of information flows in airborne collision avoidance systems, ADS-B systems, surveillance processes and modern signal processing, expansion of terrestrial surveillance systems for ADS-B using satellite system IRIDIUM, noise resistant coding and forward error correction, aviation security assessment based on simulation.

Vasil Kondratiuk, National Aviation University

Director of Research and Training Centre "Aerospace Center" at the National Aviation University.

Education: Kyiv Polytechnic Institute, Ukraine (1985).

Research area: global navigation satellite systems, unmanned aerial vehicles, aviation, performance-based navigation (PBN), experimental techniques.

Anton Ermakov, National Aviation University


Evgen Chernyuk, National Aviation University



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How to Cite

Grekhov, A., Kondratiuk, V., Ermakov, A., & Chernyuk, E. (2017). INFLUENCE OF TRANSMITTER NONLINEARITIES ON DATA TRANSMISSION FROM REMOTELY PILOTED AIR SYSTEM. Proceedings of National Aviation University, 72(3), 33–41.




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