ABSTRACTS OF ARTICLES OF THE JOURNAL "INFORMATION TECHNOLOGIES".
No. 1. Vol. 25. 2019

DOI: 10.17587/it.25.35-40

S. V. Dvornikov, Professor, e-mail: practicdsv@yandex.ru, A. V. Pshenichnicov, Assistant Professor, e-mail: siracooz77@mail.ru, S. S. Manaenko, Assistant Professor, e-mail: manaenkoss@mail.ru, Military Communications Academy, St. Petersburg

Statistical Characteristics of Noise-Free Radio Links with Frequency Resource Management

The article summarizes the results of a study of the statistical characteristics of noise-immune radiolines operating under conditions of heterogeneity of the signal and interference conditions at operating frequencies. As an estimation parameter, the amount of excess of the signal level above the interference level was chosen, which determines the probabilistic and temporal characteristics of the information transfer process. The notion of the frequency utilization factor determining the radio resource management strategy has been introduced. The dependence of the frequency utilization factor on the signal level exceeding the level of interference is determined. The notion of adaptive control of the frequency-time resource of an interference-free radio link is introduced. A hypothesis about the influence of control methods on the statistical characteristics of noise-protected radio links is formulated. For its justification, an imitation model of an interference-free radio link has been constructed, on the basis of which statistical functions for distributing the signal level over the level of interference have been obtained. The development of the simulation model is based on the probabilistic and temporal characteristics that determine the change in the energy parameters of radio signals and interference at the operating frequencies of the radio link. The peculiarity of the developed approach is the consideration of the methods of resource control of the radio link in the development of the stochastic model of the radio channel. It is substantiated that threshold management methods are less effective than adaptive control methods. It is shown that the implementation of the uniform law of the use of radio link resources does not change the functional dependence of the probabilistic-temporal characteristics, therefore, with the given control method, known algorithms for calculating the efficiency of the me-protected radio links are practically implemented. Control methods, other than uniform, determine the change in the distribution law characterizing the signal level exceeding the level of interference in the radio link; therefore, with such methods of determining the type of control, known methods for estimating the efficiency of the functional models of radio links are inadequate for the calculation conditions.
Keywords: anti-interference mode of operation, adaptive control, frequency resource, statistical characteristics

P. 35–40

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