Research Interests:
The concept of electromagnetic crosstalk in nano-circuits via quantum entanglement between the elements is considered. Manifestation of this effect in electromagnetic compatibility (EMC) and a solution for for its suppression are discussed.
Research Interests:
Research Interests:
The method of mobile communication networks planning for territories with a low traffic intensity is offered on the basis of multilayered covering model providing the required level of communication reliability.
Research Interests:
The analysis of the terrestrial electromagnetic filling in severe radio-electronic environment specified by heterogeneity of the composition of stationary and mobile radio-electronic devices (RED), specified by presence of RED with a... more
The analysis of the terrestrial electromagnetic filling in severe radio-electronic environment specified by heterogeneity of the composition of stationary and mobile radio-electronic devices (RED), specified by presence of RED with a directivity and randomness of electromagnetic radiation power, and also by heterogeneity of power criteria of electromagnetic safety for RED of various kinds is made. The equations defining the relationship of terrestrial electromagnetic filling in such radio-electronic environment with total intensity of an electromagnetic background, created by stationary and mobile RED at a terrestrial surface, and also with probability of excess of maximum permissible level by the sum of total intensity of electromagnetic field from stationary and mobile RED, and of intensity of an external electromagnetic background, are received.
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
A practical technique for the worst-case evaluation of levels of electromagnetic background generated by cellular communication systems is proposed. It is based on the analysis of the average electromagnetic loading on area created by... more
A practical technique for the worst-case evaluation of levels of electromagnetic background generated by cellular communication systems is proposed. It is based on the analysis of the average electromagnetic loading on area created by base and mobile subscriber's stations, and on the prediction of the area traffic capacity created by wireless information services supported by cellular communications. Such evaluations are very important for supporting the intersystem EMC, electromagnetic safety and ecological compatibility of 4G/5G/6G systems
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Frequency-independent relationships for estimating a following number of system parameters of cellular communications under the conditions of multipath propagation of radio waves in urban canyons and the presence of intrasystem... more
Frequency-independent relationships for estimating a following number of system parameters of cellular communications under the conditions of multipath propagation of radio waves in urban canyons and the presence of intrasystem interference are obtained: the required equivalent isotropic radiated power (EIRP) of subscriber stations, the maximum data transmission capacity of the uplink radio channel, the maximum distance of qualitative communication, and also the permissible level of intranetwork radio interference at given requirements for communication range and data transfer rate of uplink radio channel taking into account the accepted restrictions on EIRP of subscriber radio equipment. Together with the frequency- independent component of the electromagnetic background near the earth's surface, created by electromagnetic radiations of subscriber stations located outside the breakpoint vicinity of the observation point, these dependencies form a family of asymptotes that provide ample opportunities for system analysis and diagnostics of solutions and scenarios for the implementation of 4G/5G/6G systems and services in various conditions, taking into account the quality of frequency-spatial planning and the intra-system EMC design of radio networks of cellular (mobile) communications.
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Results of estimation of necessary and sufficient levels of radiation power of base stations of cellular communications on urban area are resulted. Analysis is made on the basis of the behavior simulation of the fragment of a GSM network... more
Results of estimation of necessary and sufficient levels of radiation power of base stations of cellular communications on urban area are resulted. Analysis is made on the basis of the behavior simulation of the fragment of a GSM network executed with the use of multibeam radiowave propagation model and the topological model of a fragment of urban area of the central part of Minsk. The results indicate that a high communication quality can be achieved at levels of base stations equivalent isotropic radiated power which are essentially less than the corresponding levels actually used by GSM/UMTS operators in considered territory.
Research Interests:
Frequency-independent relationships for estimating a following number of system parameters of cellular communications under the conditions of multipath propagation of radio waves in urban canyons and the presence of intrasystem... more
Frequency-independent relationships for estimating a following number of system parameters of cellular communications under the conditions of multipath propagation of radio waves in urban canyons and the presence of intrasystem interference are obtained: the required equivalent isotropic radiated power (EIRP) of subscriber stations, the maximum data transmission capacity of the uplink radio channel, the maximum distance of qualitative communication, and also the permissible level of intranetwork radio interference at given requirements for communication range and data transfer rate of uplink radio channel taking into account the accepted restrictions on EIRP of subscriber radio equipment. Together with the frequency- independent component of the electromagnetic background near the earth's surface, created by electromagnetic radiations of subscriber stations located outside the breakpoint vicinity of the observation point, these dependencies form a family of asymptotes that provide ample opportunities for system analysis and diagnostics of solutions and scenarios for the implementation of 4G/5G/6G systems and services in various conditions, taking into account the quality of frequency-spatial planning and the intra-system EMC design of radio networks of cellular (mobile) communications.
Research Interests:
Estimations of levels of the equivalent isotropic radiated power in frequency channels of GSM 900/1800 base stations (BS) which are required and sufficient for the effective utilization of radio-frequency resource allocated to the GSM... more
Estimations of levels of the equivalent isotropic radiated power in frequency channels of GSM 900/1800 base stations (BS) which are required and sufficient for the effective utilization of radio-frequency resource allocated to the GSM network, are resulted. Analysis is performed for various BS antenna heights, various population density, various levels of real sensitivity of BS radio reception, various cluster dimension of GSM network frequency planning and different specific traffic intensity.
Research Interests:
Research Interests:
The analysis was carried out in order to clarify the estimates of the expected restrictions on characteristics of new-generation mobile communications (4G, 5G) under the existing restrictions on radiated power of subscriber radio... more
The analysis was carried out in order to clarify the estimates of the expected restrictions on characteristics of new-generation mobile communications (4G, 5G) under the existing restrictions on radiated power of subscriber radio equipment, as well as in conditions where the boundaries of urban sites are outside of the area of free radio waves propagation (RWP) between subscriber and base stations. Analysis was performed using the basic principles and ensemble models of statistical theory of electromagnetic environment, as well as the basic principles of information theory that determines the radio channel capacity in presence of interference. Frequency-independent relationships have been obtained for estimating a number of system parameters of cellular communications under the conditions of multipath RWP in urban canyons and the presence of internal system interference: estimation the required equivalent isotropic radiated power (EIRP) of subscriber stations, the maximum data trans...
Research Interests:
The results of estimation of required and sufficient levels of radiated power of base stations of cellular communications of GSM standard at the voice communication mode on urban area, taking into account average attenuation of radio... more
The results of estimation of required and sufficient levels of radiated power of base stations of cellular communications of GSM standard at the voice communication mode on urban area, taking into account average attenuation of radio waves in buildings and levels of intranetwork interference are given. The analysis is made on the basis of behavior simulation of the fragment of cellular network, executed with the use of multibeam radiowave propagation model and the topological model of a fragment of urban area of the central part of Minsk by comparison of quantiles of statistical distributions of levels of received signals on various floors of buildings and also relative quantity of mobile stations, for which «Signal / (Interference + Noise)» ratio does not exceed a critical threshold of 9 dB, on various floors of buildings at different radiation power of base station. In the modeled urban area of medium number of building storeys the high communication quality is achieved at base st...
Research Interests:
The experimental estimation results of UMTS radio transmitter interference effect on receiving channels of radio altimeters RV-3/RV-4 are presented for joint use of the bands of radio frequencies 1940 -1980/2010 - 2025 MHz.
Research Interests:
This paper discusses the influence of system characteristics (traffic intensity, power adjustment, site size) networks of the radio communication using technology CDMA, on network ecological characteristics.
Research Interests:
Research Interests:
Research Interests:
ABSTRACT In the process of transmission of fixed service radio links it is important to provide the required frequency and spatial separation between fixed service receiving stations and radio facilities of other services operating in the... more
ABSTRACT In the process of transmission of fixed service radio links it is important to provide the required frequency and spatial separation between fixed service receiving stations and radio facilities of other services operating in the same frequency band as fixed service stations. According to radio regulations, the frequency bands assigned to the fixed service are in most cases also used by the land mobile service, the radio broadcasting service, radiolocation service, satellite communication service and other services. Therefore it is necessary to develop and employ frequency and spatial separation regulations in order to economically and efficiently utilize the frequency spectrum. This paper describes a method for the calculation of frequency and spatial separation regulations for fixed service receiving stations and radio facilities of other services that interfere with receiving stations of radio relay links.
Research Interests:
This paper introduces the concept of equivalent electrical multiport for a quantum device made of a pair of two-level objects, coupled via entanglement. The coupled pair is described in terms of an equivalent 2×2 admittance matrix,... more
This paper introduces the concept of equivalent electrical multiport for a quantum device made of a pair of two-level objects, coupled via entanglement. The coupled pair is described in terms of an equivalent 2×2 admittance matrix, derived from the theory of the generalized susceptibility. This result provides a valuable tool to analyze quantum circuits in the frame of the classical circuit theory. The study of the properties of the admittance matrix highlights the effect of a new coupling mechanism, due to entanglement, which adds to the classical electromagnetic coupling.
Research Interests:
Research Interests:
Research Interests:
A statistical model of interference in wireless networks is considered, which is based on the traditional propagation channel model and a Poisson model of random spatial distribution of nodes in 1-D, 2-D and 3-D spaces with both uniform... more
A statistical model of interference in wireless networks is considered, which is based on the traditional propagation channel model and a Poisson model of random spatial distribution of nodes in 1-D, 2-D and 3-D spaces with both uniform and non-uniform densities. The power of nearest interferer is used as a major performance indicator, instead of a traditionally-used total interference power, since at the low outage region, they have the same statistics so that the former is an accurate approximation of the latter. This simplifies the problem significantly and allows one to develop a unified framework for the outage probability analysis, including the impacts of complete/partial interference cancelation, of different types of fading and of linear filtering, either alone or in combination with each other. When a given number of nearest interferers are completely canceled, the outage probability is shown to scale down exponentially in this number. Three different models of partial cancelation are considered and compared via their outage probabilities. The partial cancelation level required to eliminate the impact of an interferer is quantified. The effect of a broad class of fading processes (including all popular fading models) is included in the analysis in a straightforward way, which can be positive or negative depending on a particular model and propagation/system parameters. The positive effect of linear filtering (e.g. by directional antennas) is quantified via a new statistical selectivity parameter. The analysis results in formulation of a tradeoff relationship between the network density and the outage probability, which is a result of the interplay between random geometry of node locations, the propagation path loss and the distortion effects at the victim receiver.
Research Interests: Computer Science, Distributed Computing, Information Theory, Statistical Analysis, Information Geometry, and 15 moreProbability, Directional Antenna, Fading, Outage Probability, Rayleigh fading, Spatial Distribution, Interference, Path Loss, Linear Filtering, Performance Indicator, Interference Cancellation, Electrical And Electronic Engineering, Fading channels, Poisson Model, and Statistical Distributions
In this paper, the results of a refined analysis of the correlation, previously discovered by the author, between the accepted maximum permissible levels (MPL) of radio frequency electromagnetic fields (RF EMF) for population and the... more
In this paper, the results of a refined analysis of the correlation, previously discovered by the author, between the accepted maximum permissible levels (MPL) of radio frequency electromagnetic fields (RF EMF) for population and the mortality rate of COVID-19, carried out using the data samples from the World Health Organization (WHO), taken monthly from May 2020 to July 2021, are presented. To explain the results obtained, correlation between the accepted MPL for RF EMF, the level of vaccination of population against COVID-19, and the level of gross domestic product per capita in different countries were analyzed additionally. Analysis results confirm the presence of a noticeable correlation between the RF EMF MPLs and the COVID-19 mortality rate, especially in the first months of the analyzed period. The subsequent decrease in correlation between them by the end of analyzed period is a result of significantly larger efforts in struggle against COVID-19 in those countries where hi...