Vol 12, No 4 (2014)

The phenomenon that occurs when the transmission of numerical codes on Gaussian chan-nels, leading to an increase of the mean square error recovery numbers as their distance from the center of the allowable range. Justified the name of this phenomenon as “centrifugal er-ror” transmission, the basic functions and numerical characteristics of its probabilistic description. Possible ways to eliminate the negative impact of this type of distortion to improve the noise immunity of transmission systems of numerical information.

The rather simple calculation and evolution procedure of the quality of service of M/M/n/q queuing system with unsafe channels is offered. The variants of annex of this procedure for the researching of the functioning of multi-channel communication systems functioning under noises effect are shown.

The technology of orthogonal frequency OFDM multiplexing is hosed on for motion of multi frequency signal. The block of consistent information symbols converts in block of parallel symbols; in which every information symbol satisfy certain frequency of the multi frequency signal. Increasing the spectral efficiency of the OFDM system will facilitate the development of advanced mobile networks.

In this paper, we analyze quality of video streaming in Flying Ad Hoc Networks (FANETs) with help of an NS-3 simulation tool. Considered network topology consists of source, destination and relay nodes and uses AODV and OLSR routing protocols. We estimate quality of video streaming based on average chunk delivery ratio PDRave and average application layer data deli-very speed Rave. We developed data delivery algorithm using PULL-PUSH approach to improve quality of video streaming. This paper presents performance investigation of developed algorithm in considered network topology with AODV and OLSR routing protocols.

The article addresses the methodological issues an integrated control system of industrial enterprise to implement work-management tasks that allow you to get the economic effect.

The article discusses the problem of selection of the contractor for contracts for supply of inventory (TMC), technological equipment, as well as for the provision of services on repair and capital construction, services nature-based evaluation of organizational and technical activities using the method of convolution information SADT model.

Electrodynamics analysis of metamaterial formed by periodically placing thin-wire multiturn spiral elements in a homogeneous dielectric container. Solved the problem of reflection of a plane electromagnetic wave from said metamaterial and the coefficients of reflection and transmission main and cross-polarized components of the field. It is proved that the metamaterial can convert radially incident super high-frequency (UHF) radiation at the resonant frequency surface waves. Calculated frequency dependence of moduli of the coefficients of reflection and transmission main and cross-polarized components of the field at different geometrical dimensions of the container and spiral inclusions. It is shown that the resonant frequency of the incident field in the conversion surface waves satisfy a relation similar to the Bragg condition for the crystalline environment.

The properties and algorithms of realization of the detuned pairs and single digital resonator with complex scale coefficients. The method of synthesis based on the values of the resonance frequency, bandwidth and resonance gain.

The article discusses the currently used definitions of the term «a machine-readable medium» applied to the questions posed by court trials participants to IT professionals on the meaning of this term and its scope. The authors propose a number of new definitions to clarify the possible uncertainties that may be critical to the results of trials.

This paper analyzes trends in current technological and social development caused by the IPR existence. The article examines possible negative consequences of IPR implementation.