Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2021. No. 8
ContentsFull text in Russian (pdf)
DOI https://doi.org/10.30898/1684-1719.2021.8.4
UDC 621.391.01
ALGORITHM OF PHASE-FREQUENCY DISTORTION ADAPTIVE COMPENSATION FOR BROADBAND SIGNALS DURING PROPAGATION THROUGH TRANSIONOSPHERIC CHANNELS
V. V. Batanov 1, L. E. Nazarov 1,2
1Academician M.F.Reshetnev Information Satellite Systems, Lenina str., 52, Zheleznogorsk, Krasnoyarsk region 662972, Russia
2 Kotelnikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences, Vvedensky sq., 1, Fryazino, Moscow region 141190, Russia
The paper was received on August 16, 2021
Abstract. The models of distortions of digital broadband signals during their propagation through transionospheric channels which are equivalent to a linear filter with an impulse response determined by a number of parameters, in particular, the central frequency of the signals, are presented. Distortions of the phase-frequency characteristics of digital broadband signals due to the dispersion properties of the ionosphere causes time scattering and the appearance of interference noise which reduces the reliability of information systems and with certain characteristics of the radiochannel destroys their operation. This determines the relevance of developing computational procedures for processing digital signals that reduce the effectiveness of this type of interference, a characteristic property of which is the linear dependence of their power on the power of information signals. The description of the algorithm for adaptive compensation of these distortions based on the use of information signals and the formation of an inverse filter is given, which corresponds to the general concept of "blind" processing. The possibility of the considered distortion compensation for digital wideband signals with phase shift keying and achievement of probabilistic characteristics of erroneous reception providing an acceptable quality of a radiochannels for information systems has been shown by means of computer simulations.
Key words: ionosphere channels, broadband signals, signal distortions, algorithm, error-performances, “blind” processing.
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For citation:
Batanov V.V., Nazarov L.E. Algorithm of phase-frequency distortion adaptive compensation for broadband signals during propagation through transionospheric channels. Zhurnal Radioelektroniki [Journal of Radio Electronics]. 2021. No.8. https://doi.org/10.30898/1684-1719.2021.8.4 (In Russian)