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This paper presents a common bases of assurance electromagnetic compatibility by use of microelectromechanical systems (MEMS) components. Some parameters of microsystem technology and devices fabricated on this technology basis are analyzed.
The modified discrete chaotic map based on Chebyshev polynomial is proposed for the design of chaotic signal code constructions. The result can be used for the design of multi-channel chaotic data transmission systems of special purpose.
The possible losses are analyzed in prospective method of coherent polarization multiplexing. The losses associated with fully polarized and non-polarized components are considered. The adaptive method for compensation of non-polarized components is recommended. To eliminate the distortion caused by the rotation of the polarization plane of the received signals it is recommended to use circular polarizations.
An implementation of blind deconvolution algorithm based on multistart optimization method in the wavelet transform domain is shown. The results of simulation confirm the increased likelihood of convergence to a global optimum for determining the filter coefficients for the blind deconvolution problem solutions with help of this optimization method.
In this paper, the general principle of OLS technology is described in details. Two types of transmission were described: payload and labels transmission. We have assessed the problem of effective size of data unit while taking into account the network parameters such as network delay, efficiency of channels utilization and power consumption. The main approaches to improve the efficiency of channels...
This article is about the impact of TCP-window size in the numerical characteristics of intervals between packets We consider raw moments from the first to third of the time intervals. Experiments were carried out on the virtual system deployed using OpenNebula platform on physical servers. We consider two cases: software defined network with OpenFlow protocol support and traditional network without...
In this paper considered spectrum mobility techniques for cognitive radio that based on spectrum sensing. Cognitive Radio (CR) is the newest technology to make the secondary users to make use of licensed spectrum in the opportunistic manner. In the proposed structure, politics of switching channel and a proactive spectrum handoff protocol are let cognitive users use a channel before a primary user...
The paper displays the results of the research of symmetric cryptographic transformations that can be applied while using the quantum computing systems, so to say, in post-quantum period. For this purpose, we carried out the analysis and comparative study of the most common cryptographic algorithms that are standardized at the international and national levels, and also examined their ability to provide...
The problem of QoS characteristics definition for self-similar traffic for queuing system of the type W/M/1 using the Weibull distribution is considered. To solve this problem, a transformation of Laplace-Stieltjes is applied. The values of service quality characteristics for self-similar traffic QS W/M/1 such as: the average time of packets delay, the average number of requirements in QS and the...
The results of research of the main trends and prospects of transport distribution networks development (Mobile backhaul) and the possibilities of using fixed telecommunication systems of terahertz band wireless communication in the framework of building mobile networks 5G are shown. Described designed and experimentally investigated terahertz range radio communication (130–134GHz) with application...
Energy saving and quality of service are the most popular but contradictory criteria for resource allocation in IP-over-WMD network. Establishing of direct lightpath according to bypass architecture of IP-over-WMD network becomes reasonable when arriving traffic exceeds some threshold while under the threshold traffic have to be routed via compound path if it exists. On the other hand compound path...
This paper surveys a new and comprehensive concept of services assurance in distributed heterogeneous service-oriented systems. A vertical decomposition of the service delivery is proposed for these systems. The mathematical model of request transmission process is developed.
The article suggests using the SAP® ERP principles for the design of corporate integrated information system for SME. The content and use of information resources is justified from the standpoint of human health protection, taking into account international standards.
In this article the main principles of building radio station with frequency hopping spread spectrum are described. This problem is relevant because of modern powerful facilities for electronic intelligence and jamming. The prototype of the modern frequency hopping spread spectrum radio station with quadrature radio frequency processing was developed.
the analysis showed that modern approaches to information protection organization do not fully ensure the fulfillment of the requirements for the protection of information. Critical situation in the information security sphere is compounded by the use of the global network for external and internal electronic transactions of the enterprise and the emergence of previously unknown types of destructive...
The Internet of Things (IoT) is an emerging technology that is considered by industry and academy as a global infrastructure for the information society in today's digital world. IoT is implemented now in several ecosystems to improve economic indicators and productivity of enterprises, and also to improve the quality of consumer's lives. Thus a development of new architectures and approaches for...
The method of calculating distributed system imbalance based on the calculation of node system load was proposed in the work. Calculation of node system load is carried out by calculating the average coefficient of utilization of CPU, memory, bandwidth of each system node, taking into account multifractal properties of input data flows. The simulation of the proposed method for different multifractal...
Paper is devoted to the research the requirements from different user groups to Telecommunications Network. Based on the proposed approach to creating a model of user requirements change to TN there has been developed expert system, the result of which is to solve the problem of forecasting, which is deciding on belonging to a particular class of network based on accumulated statistics Requirements...
This paper presents a method for determining of the maximum diameter of the photonic-crystal fiber mode field. If carrying out the alignment of these two fibers when connecting considers the rotation angle around of the longitudinal axis, it will reduce losses at the junction.
The analysis of characteristics of nodes of the multiservice communication networks modelled by the G/G/1 systems when processing the modern traffic is the important technical task. In the assumption of independence of intervals of time between requests and independence of intervals of time of processing of the request in system the analysis of wait time of the request in queue can be realized on...
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