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The purpose of the scientific paper is to study the effects of internal system interference caused by the movement of a mobile station in the cell of the service area, which involves the use of the same frequencies, which worsens the communication conditions. The article provides calculation formulas for determining the signal-to-noise ratio at the input of the receiver of the mobile station. Calculations, including tables and figures, for different characteristics of base stations (BS) of the mobile network are also given. The analysis of literature sources shows insufficient depth of the conducted researches in directions for improving the noise immunity of the signal under different conditions in particular: city development, terrain, interference from other base stations. The use of radio networks with moving objects makes it possible to repeatedly use the same dedicated frequency band to increase the speed of digital information transmission and economical use of the frequency range. This method has a significant disadvantage, which is the presence of mutual internal system interference between base and mobile stations that use the same frequency range. The purpose of the scientific article is to study the noise immunity of the signal at the input of the receiver of the mobile station at different characteristics of the base stations in terms of urban development

vìsnik hmelʹnicʹkogo nacìonalʹnogo unìversitetu. tehnìčnì nauki

INVESTIGATION OF SIGNAL DISTURBANCE OF THE SIGNAL AT THE INPUT OF THE MOBILE STATION RECEIVER WITH DIFFERENT CHARACTERISTICS OF BASE STATIONS IN THE CONDITIONS OF CITY BUILDING