http://radioelektronika.org/issue/feedRadioelectronics and Communications Systems2017-05-13T21:34:42+03:00Fedor Dubrovkafedor.dubrovka@gmail.comOpen Journal Systems<p>Radioelectronics and Communications Systems, ISSN 1934-8061 (Online), ISSN 0735-2727 (Print) is a monthly peer-reviewed international scientific journal on electrical engineering, electronic engineering, and electronics. It is English version of the journal <strong>Izvestiya Vysshikh Uchebnykh Zavedenii. Radioelektronika</strong>, ISSN 2307-6011 (Online), ISSN 0021-3470 (Print). The journal is indexed in SCOPUS, INSPEC, Google Scholar, Academic OneFile, EI-Compendex, Gale, OCLC, SCImago, Summon by Serial Solutions, VINITI, RSCI. <strong>Сites per Doc. = 0.137</strong> (Cites per Doc. (2y) = Impact Factor WoS, 2015). <strong>SJR = 0.171, Q3</strong> (Scopus, 2015).</p>radiocurrenthttps://feedburner.google.comhttp://radioelektronika.org/article/view/S0735272706010018The hyperrandom functions and their description2017-05-13T21:34:22+03:00I. I. Gorbaninfo@radio.kpi.uaThe paper presents the essentials of a new mathematical apparatus for describing a special class of indeterminate functions, which cannot be characterized with the probabilistic measure. These functions are termed hyperrandom. For their description some special characteristics are suggested. A hypothesis is put forward stating that all actual events, usually considered as random, are in essence hyperrandom.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/cAx5hIAkxvo" height="1" width="1" alt=""/>2006-01-01T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S0735272706010018http://radioelektronika.org/article/view/S073527270601002XParallel ladder algorithms based on a priori errors of prediction and simulation2017-05-13T21:34:24+03:00V. I. Djiganinfo@radio.kpi.uaThe paper considers parallel computations in ladder fast RLS-algorithms with a sliding window and/or dynamic regularization of the correlation matrix of adaptive filter. Computational procedures of the algorithms using a priori error of linear prediction and simulation are presented, and assessment of arithmetic complexity of the algorithms is carried out. The algorithms can be employed for processing nonstationary signals in applications not requiring calculation of weight coefficients of adaptive filters in the explicit form, where the sought output signal represents the filter error signal.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/6Hkwpj1agrk" height="1" width="1" alt=""/>2006-01-02T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S073527270601002Xhttp://radioelektronika.org/article/view/S0735272706010031Methods for improvement of noise stability in information transmission systems with optimal predistortion and correction2017-05-13T21:34:27+03:00V. K. Marigodovinfo@radio.kpi.uaYu. V. Matveevinfo@radio.kpi.uaThe paper considers some methods for improvement of efficiency and noise stability of information transmission systems with the use of optimal pre-emphasis and de-emphasis of signals. The main attention is paid at complicated noise situations, when a radio channel is attacked by high-power pulse interference, and when short-term interruptions in communication occur.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/oWA3ctbNQmM" height="1" width="1" alt=""/>2006-01-03T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S0735272706010031http://radioelektronika.org/article/view/S0735272706010043Integration of nonhomogeneous equations of electrodynamics in a space with its metric defined through rotation2017-05-13T21:34:29+03:00B. M. Petrovinfo@radio.kpi.uaThe general solution to nonhomogeneous wave equations of electrodynamics in the Riemann space corresponding to a rotational reference system is obtained. Partition of the electromagnetic field into field components of the electric and magnetic type waves is performed. The Debye potentials and the functions after G. T. Markov are defined.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/xvr6jLmFG3c" height="1" width="1" alt=""/>2006-01-04T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S0735272706010043http://radioelektronika.org/article/view/S0735272706010055J-correlation range finder based on the method of minimum2017-05-13T21:34:32+03:00A. G. Sorochaninfo@radio.kpi.uaThe paper considers a range measuring system based on the J-correlation method of signal processing and discloses the main features of its operation. The potential accuracy of range measurement, sensitivity, and resolving capacity are evaluated. The possibility for determination of Doppler’s shift of frequency is demonstrated.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/gWjN3GB2qv0" height="1" width="1" alt=""/>2006-01-05T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S0735272706010055http://radioelektronika.org/article/view/S0735272706010067Filtration of estimates of signal’s information parameters with resolving their classes2017-05-13T21:34:34+03:00Emir Ibatoullineinfo@radio.kpi.uaThe paper is devoted to application of a Kalman’s filter to estimating the parameters of distributions describing the classes of signals. The primary estimates of distribution parameters are obtained by the iterative method of maximum likelihood. The Kalman filter has been simulated such that direct measurements give for this filter acceptable estimates of mean values and variances of errors in the delay time and the carrier frequency. The estimations are performed for a single class of stochastic signals.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/jf60gPT2DlE" height="1" width="1" alt=""/>2006-01-06T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S0735272706010067http://radioelektronika.org/article/view/S0735272706010079An approach to ordering of systems of the Walsh discrete functions2017-05-13T21:34:37+03:00I. I. Ismagilovinfo@radio.kpi.uaA new approach is suggested to ordering of the Walsh discrete functions based on the properties of their finite-difference representations. The new relationships are used for generating a permutable sequence to construct the difference-ordered system of Walsh functions based on the Walsh-Paley system. Generalization of the Kronecker product of matrices permits to develop a technique of synthesis of the transformation matrix for another version of the difference-ordered system of Walsh functions.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/fIYRCzK5cVc" height="1" width="1" alt=""/>2006-01-07T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S0735272706010079http://radioelektronika.org/article/view/S0735272706010080Resonant effects in an electric circuit with periodically changing parameters2017-05-13T21:34:39+03:00N. D. Biryukinfo@radio.kpi.uaYu. B. Nechaevinfo@radio.kpi.uaV. N. Fin'koinfo@radio.kpi.uaOne of three possible manifestations of resonance in a parametric circuit is considered, which is the direct generalization of ordinary resonance. It turns out that inaccurate interpretation of the ordinary resonance becomes an obstacle for extending it to the parametric loop case. Because of this, particular emphasis in this work is placed on the ordinary resonance phenomenon. For the first time the parametric circuit resonance is considered in the situation when all the circuit elements are periodic functions of time.<img src="http://feeds.feedburner.com/~r/radiocurrent/~4/UyjHQL9NyHc" height="1" width="1" alt=""/>2006-01-08T00:00:00+02:00Copyright (c) 2017 Radioelectronics and Communications Systemshttp://radioelektronika.org/article/view/S0735272706010080