Tromsyuk V. Methods and devices for estimating bit errors in industrial computer systems

The object of the study is the process of detecting insertions and dropouts of bits during data transmission in industrial computer systems. The subject of the study are methods and means for detecting and evaluating insertions and bit outliers in industrial computer systems. The aim of the thesis is to increase the accuracy of detection and evaluation of bit errors and noise immunity of industrial computer systems by reducing the influence of single additive errors. Methods of research: methods of the theory of finite fields; The theory of noise-immune encoding; Simulation modeling; The theory of designing discrete circuits; Probability theory and mathematical statistics. Theoretical results: the positional method for identifying positions and estimating the lengths of insertions/deletions of bits, the feature of which is the use of recursive sequences, was proposed for the first time; For the first time, a method was proposed for rearranging the relative positions of the sync symbols by the frequency of their appearance on the basis of the incoming and outgoing elements of the queue; New analytic expressions are obtained for revealing the positions and estimating the lengths of insertions/deletions of bits against the background of single additive errors on the basis of determining the most probable value of the shift in the argument of the maximum value of the repetition frequency of identical values; An improved correlation method for parallel processing of the cross-correlation coefficients based on the application of pyramidal convolution of the values of the cross-correlation coefficients. Practical results: algorithms and devices have been developed that make it possible to improve the accuracy and noise immunity of estimating bit errors against the background of single additive errors, and to separate from each other errors of various types: insertions, deletions and single additive errors. Degree of implementation: the results of the research were used in the work of the state enterprise "Research Institute of Helium", Podolsk Design Institute, Vinnytsia National Technical University. Sphere (industry) of use: information and communication technologies.