ABSTRACTS OF ARTICLES OF THE JOURNAL "INFORMATION TECHNOLOGIES".
No. 1. Vol. 26. 2020

DOI: 10.17587/it.26.16-21

S. V. Dvornikov, Dr. Tech. sciences, prof., e-mail: practicdsv@yndex.ru, A. V. Pshenicnikov, Dr. Tech. Sciences, Assoc., e-mail: siracooz77@mail.ru, S. S. Manaenko, Ph.D., Art. prep., e-mail: manaenkoss@mail.ru, St. Petersburg Military Academy of Communications

Statistical Model of Interference-Free Radio Systems Based on the Threshold Frequency Resource Control Method

One of the important problems of building modern radio systems is the fulfillment of the requirements for the stability of their functioning in difficult conditions of signal and interference conditions. The greatest relevance of the task of this subject area is acquired when it is necessary to take into account the parameters of deliberate destructive influences. Known approaches are based on expanding the base of signals based on the resources of radio engineering systems. Such approaches are quite effective in conditions of homogeneous models of radio channels, which are characterized by the same parameters of the functions of the distribution of signal characteristics and interference at operating frequencies. Under the conditions of inhomogeneous models of radio channels, the selected class of solutions is rather limited due to the uncertainty of the parameters of the statistical models of radio systems. The aim of the work is to study the properties of the statistical model of radio systems that implement the threshold method of controlling the frequency resource. This method is based on the implementation of procedures for sounding working channels, determining the signal level exceeding the noise level and eliminating working frequencies with unacceptable values of the measured parameter. To achieve the stated goal, a simulation model of noise-free radio engineering systems was developed based on the threshold frequency resource control method. A hypothesis is formulated, based on the dependence of statistical laws on the parameters of the array of excluded frequencies. To prove the hypothesis, an experiment was conducted using the developed simulation model. A set of statistics was carried out, on the basis of which the characteristics of the studied radio engineering systems were obtained. Analysis of the results confirms the validity of the formulated hypothesis. The main conclusions of the work confirm and justify the nature of changes in the statistical characteristics of noise-free radio engineering systems with a threshold method of frequency resource control. At the same time, the distribution functions of the exponential type characterize the largest decrease in the specified performance indicators. In conclusion, shows the approximate boundaries of the array of excluded frequencies, defining the nature of changes in statistical parameters.
Keywords: interference-free radio links, threshold control method, frequency resource, signal and interference level, statistical model

P. 16–21

To the contents