ANALYSIS OF ALGORITHMS FOR THE FORMATION OF CODE STRUCTURES AFFECTING THE QUALITY OF DATA TRANSMISSION IN INFOCOMMUNICATION SYSTEMS

Abstract

Achieving the best quality indicators of transmission through the channels of modern communication systems is always of urgent importance for developers and users of information communication systems. At the same time, to ensure high transmission reliability and performance, various coding methods and methods of converting the transmitted data can be used. Accordingly, each of the proposed data processing methods has its advantages and disadvantages, which determines their attractiveness or application limitations for the data being transmitted. In this paper, the analysis of algorithms for forming signal code structures of traditional interference-resistant positional codes, codes with an even number of units, and a nine-element Hamming code is carried out. Classical positional coding is inferior in such important data transmission parameters as information capacity and entropy. However, in some cases, for example, when the results of data transfer quality parameters calculations are significantly influenced by the language of the transmitted textual information or the volume of the analyzed text (the influence is more likely to be noticeable in individual cases, and not in general), then an important value acquires the possibility of applying a certain/adapted type of encoding of the transmitted data. The article conducts theoretical research and calculates the main qualitative parameters of the studied code constructions for various initial conditions. A comparative analysis and assessment of the influence of the studied parameters on the quality of data transmission was carried out. Conducted theoretical studies show that, under certain conditions, positional coding provides a significant gain in the main quality indicators of data processing and can be successfully applied for coding and transmission of digital data through the channels of modern information transmission systems. In order to practically confirm the reliability of the obtained results, relevant studies should be conducted, for example, with simulation on a software model of a virtual transmission system with different coding principles on modern computer systems.