EFFECTS OF RICIAN FADING ON THE OPERATION OF AERONAUTICAL SATELLITE OFDM CHANNEL

Authors

  • Volodymyr Kharchenko National Aviation University
  • Andrii Grekhov National Aviation University
  • Ismail Ali National Aviation University
  • Yulia Udod National Aviation University

DOI:

https://doi.org/10.18372/2306-1472.67.10426

Keywords:

adaptive modulation, convolutional coding, Doppler frequency offset, Doppler spectrum type, free space loss, Rician fading, satellite communication OFDM channel, satellite transponder

Abstract

The aim of this study is to investigate the influence of Rician fading on messages transmission via the aeronautical satellite OFDM channel with adaptive modulation and the development of a method for estimating the parameters of such a channel. Methods: To study the effect of Rician fading on messages transmission via aeronautical satellite OFDM channel with adaptive modulation the original model of the communication channel “Aircraft-Satellite-Ground Station” was built using software package MATLAB Sіmulіnk. The model includes “Aircraft Transmitter”, “Uplink/Downlink Path”, “Satellite Transponder”, and “Ground Station Receiver”. Each modulator block in the modulation bank performs convolutional coding and puncturing using code rates of ½, ²/3, and ¾, data interleaving, BPSK, QPSK, 16-QAM, and 64-QAM modulation. Results: Dependences of Estimated channel SNR on the ratio between the power of the LOS component and the diffuse component, on the downlink gain and delay in the diffuse component for different Doppler spectrum types and Doppler frequency offsets were obtained. A method for estimating the parameters of the satellite channels with fading was proposed. Discussion: The realistic model of aeronautical satellite OFDM link with Rician fading is developed for the first time on a basis of IEEE 802.11a standard and used for channel parameters evaluation. Proposed in this article approach can be considered as a method for estimating parameters of the channel with fading.

Author Biographies

Volodymyr Kharchenko, National Aviation University

Doctor of Engineering. Professor.

Acting Rector of the National Aviation University, Kyiv, Ukraine. Professor of Traffic College of Ningbo University of Technology, Ningbo, China. Editorin-Chief of the scientific journal Proceedings of the National Aviation University.

Winner of the State Prize of Ukraine in Science and Technology, Honored Worker of Science and Technology of Ukraine.

Education: Kyiv Institute of Civil Aviation Engineers, Kyiv, Ukraine.

Research area: management of complex socioechnical systems, air navigation systems and automatic decision-making systems aimed at avoidance conflict situations, space information technology design, air navigation services in Ukraine provided by СNS/АТМ systems.

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: Kyiv State Taras Shevchenko University, Ukraine (1973).

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.

Ismail Ali, National Aviation University

Ali Ismail (1990). Post-graduate Student.

National Aviation University, Kyiv, Ukraine.

Yulia Udod, National Aviation University

Udod Yulia (1994). Student.

National Aviation University, Kyiv, Ukraine.

References

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Published

21-06-2016

How to Cite

Kharchenko, V., Grekhov, A., Ali, I., & Udod, Y. (2016). EFFECTS OF RICIAN FADING ON THE OPERATION OF AERONAUTICAL SATELLITE OFDM CHANNEL. Proceedings of National Aviation University, 67(2), 7–16. https://doi.org/10.18372/2306-1472.67.10426

Issue

Vol. 67 No. 2 (2016)

Section

AEROSPACE SYSTEMS FOR MONITORING AND CONTROL

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