Abstract
A model of a radio line with fog, which is used to represent distortions of complex envelopes of digital signals because of the absorbing and dispersive properties of the propagation medium, has been considered. It is shown that with an increase in the frequency band of digital signals and with an increase in their order of manipulation (when using frequency-efficient signals), the influence of these distortions leads to energy losses in relation to propagation in free space. The quantitative estimation of energy losses for the digital signals used in applications with multi-position phase, quadrature-amplitude, and amplitude-phase manipulations and for a radio line with fog with a variation of its parameters has been carried out. It has been shown that for signals with multiposition phase and amplitude-phase manipulations (the frequency efficiency coefficient of the signals is 4 bits/s/Hz), the energy losses reach 3.5 and 1.0 dB, respectively.
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The work was supported within a state task of the Institute of Kotelnikov Radioengineering and Electronics, Russian Academy of Sciences.
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Nazarov, L.E., Kutuza, B.G. & Batanov, V.V. Estimation of Probabilistic Characteristics of Reception of Frequency-Effective Signals during Propagation along a Radio Line with Fog. J. Commun. Technol. Electron. 68, 702–707 (2023). https://doi.org/10.1134/S1064226923060104
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DOI: https://doi.org/10.1134/S1064226923060104