Lemeshko A.V. Improved methods for designing wireless computer networks. - Qualifying scientific work on the rights of the manuscript.
Dissertation for the degree of Doctor of Philosophy in the field of knowledge 12 - Information technology in the specialty 123 - Computer Engineering. - State University of Telecommunications. - Kyiv, 2021.
The work is dedicated to upgrading efficiency of wireless computer networks, based on the information system due to a decrease in the levels of internal system jamming between neighboring cell receivers and an increase in external to WLAN jam resistance of the designed wireless computer networks, that currently being a topical and feasible science and engineering development trend.
There have been analyzed wireless computer networks features and principles, electromagnetic compatibility problems and methods of their solution, having made it possible to mark the technology “bottlenecks”, necessary to pay attention to while
designing: a hidden bond problem; mutual jamming between the neighboring cells (internal systemic electromagnetic compatibility); extended jamming; ensuring Quality of Service for the apps; extending a wireless network; environment peculiarities influence.
There has been developed an algorithm of transmittance environment access mechanisms; and shown that it is necessary to conduct registering internal systemic and extended jamming at the early stages of wireless computer networks design.
There have been developed methods of designing wireless computer networks, taking into account electromagnetic compatibility problems; there have been improved methods of the jam total level calculation: a method, making it possible to work out the worst case when the jamming signals are added up (a simplified method); a method, making it possible to consider the phase difference of the jamming signals, having come to the receptor.
There has developed an algorithm of calculations, making it possible to model various interactions between WLAN parameters; algorithms of an improved mechanism of reserving transmittance environment, making it possible to organize on one territory simultaneous functioning of several cells, belonging to one WLAN and using one frequency channel.
There have been upgraded methods and algorithms of calculations, developed the methodology of WLAN design, taking into consideration the influence of extended and internal systemic jamming. The suggested methods and algorithms make it possible to model interactions between WLAN parameters, signal level rates and jamming in WLAN receptors.
Keywords: wireless computer networks, Wi-Fi, WLAN, electromagnetic compatibility, signal digitalization, jamming, algorithms.
