ANALYSIS OF CONDITIONS OF RADIO WAVES PROPAGATION FOR 4G AND 5G TECHNOLOGIES
Journal Title: Телекомунікаційні та інформаційні технології - Year 2017, Vol 117, Issue 4
Abstract
Impact of the radio waves propagation environment on durability of radio signals which are used in 4G and 5G technologies was analyzed. The of main radio-physical phenomena which take and place at passing of broadband super-high-frequency and extremely high-frequency radio signals through troposphere are systematized. The of nature of influence of radiophysical phenomena on the quality of communication was researched. It of is rotined that the quantitative degree of influence of radio-physical processes on quality of passing to information depends on the length of troposphere radio-section connection. Common of analytical expressions are got for exact determination of length of troposphere area of most essential in the applied relation satellite radioline and finding of dependence of this length from the size of workings place corners.
Authors and Affiliations
Serhiy Kozelkov, Nataliia Korshun
The method for determining optimal parameters of the low-loss transmission windows in terahertz range.
The questions of increasing the efficiency of data transmission over a wireless and terahertz channel based on the method developed to determine the optimal parameters of low-loss transmission windows are considered. The...
USE OF THE DIODES-NOISE GENERATORS TO CREATE A TWO-LEVEL RANDOM NUMERICAL SEQUENCE
The possibility of using diodes noise generators to create a two-level random number sequence is shown. There are founded for some types of diodes-generators the operating conditions (such as overvoltage), which the maxi...
HE DEVELOPMENT OF THE METHOD OF MODELLING AND FORECASTING OF NONLINEAR HETEROSCEDASTIC PROCESSE
The article is dedicated to the analysis of methods of estimation of the parameters of nonlinear stochastic models of volatility using Monte Carlo method for mark chains on the basis of Gibs algorithms and its modificati...
INTERACTION MODEL OF INFORMATION SYSTEMS IN CONFLICT CONDITION
The article deals with issues relating to the design of information systems and the interaction of systems among themselves. The model of interaction of information systems of radio communication, between which the confl...
METHOD FOR SPEED UP MODULAR EXPONENT CALCULATION BY USING PRECOMPUTATIONS
The article proposes a method to speed up modular exponentiation AE mod M – the base operation of network data protection protocols. The proposed method is solving this issue by using precomputation that allows to cut do...