Vector is the application programs complex developed by the Moscow Technical University of communications and Informatics (MTUCI). It includes programs of the modulated signals vector synthesis named "Vector-VSG&...
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The paper considers some practical aspects arising from the use of "transparency windows" (range of symbol time durations of information sequence when error probability per symbol due to intersymbol distorti...
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ISBN:
(纸本)9781538656235;9781538656228
The paper considers some practical aspects arising from the use of "transparency windows" (range of symbol time durations of information sequence when error probability per symbol due to intersymbol distortion is zero) to increase spectral efficiency in radio communication systems using multiposition phase-shift keyed signals with n discrete states. The functioning of communication systems was analyzed in the presence of frequency detuning and error produced by phase meter for various amplitude-frequency responses of a linear radio path. The admissible operating conditions and gains in information transfer rate of such systems are determined.
Based on the methods of optical spectroscopy a new principle of generating error signals in systems for multicriteria control is proposed. These systems are intended for control of processes that are accompanied by em...
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The fiber-optic data transfer systems spectral efficiency factor widening conception is proposed. Two kinds of signal transmission rate, - bitrate and baudrate, - and two kinds of spectrum definitions, - frequency and...
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ISBN:
(纸本)9781538656235;9781538656228
The fiber-optic data transfer systems spectral efficiency factor widening conception is proposed. Two kinds of signal transmission rate, - bitrate and baudrate, - and two kinds of spectrum definitions, - frequency and wavelength, - are being analyzed associated with the spectral efficiency factor. Four modifications of spectral efficiency are designed based on four pair transmission rate - spectrum combinations. In addition to the classic spectral efficiency SE the combination set includes: baud efficiency BE, spectral - wavelength efficiency SWE and baud - wavelength efficiency BWE. The transmission rate influence on spectral efficiency factor modifications is being analyzed. Conception of complex multiplexing is being used for fiber - optic data transfer systems transmission rate forming mechanism modeling.
The article discusses the technologies and standards of modern communication systems in terms of transceiver devices structure from analog-to-digital conversion to a stream of symbol decisions at the demodulator outpu...
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The importance of challenges has been recognized by certain part of education professionals in Russia in the last 25 years. But only few years ago the structural shaping the management of professionalization for on bo...
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ISBN:
(纸本)9781728106069
The importance of challenges has been recognized by certain part of education professionals in Russia in the last 25 years. But only few years ago the structural shaping the management of professionalization for on boardcommunications in line with the global trends had been commenced. The new social and economic environment demands a drastic change in the teaching process, introducing new standards and approaches for the quality measuring criteria to be introduced to meet the requirements of effective activity and demands of on boardcommunications' employers. This is why the working out and introducing the vocational standards has become the basic instrument to adjust the employers' demands and opportunities of high education Institute (HEI). This mainstream direction of activity is considered to be a priority and basic line for the state program documents defining the guideline policy for science and education development. The concept of modernizing the vocational education should cover mechanisms for the realization of social functions, educational institutions, taking into account the global, federal and regional external trends. In compliance with these priorities we believe it is necessary to focus on the following aspects: (a) factors of social and professional background;(b) system factors;(c) principles of professional education's modernization;(d) methods of professional education's modernization;(e) the potential risks.
Modern education is the integration of content and learning technologies. Distance learning is an opportunity to study individually, regardless of the place and time, the opportunity to learn all my life. In all count...
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ISBN:
(纸本)9781728106069
Modern education is the integration of content and learning technologies. Distance learning is an opportunity to study individually, regardless of the place and time, the opportunity to learn all my life. In all countries of the world there is an increase in the number of students remotely, the number of universities using them in the educational process is growing;a large number of international educational structures are being created, etc. currently, fundamentally new priorities are being identified in the educational sphere, the most important of which are the informatization of the management activities of educational organizations. The relevance of the topic is due to the fact that the problem of development and implementation of distance learning (DL) in higher education is particularly acute for the domestic education system due to the increasing requirements for the quality, volume and pace of the educational process and dissatisfaction with the existing system of higher education. The choice of this topic is primarily due to the interest in modern educational technologies and new systems approaches in this area, the priority of which is currently DL
The article discusses the method of calculating the conflict of motor traffic flow (hereinafter referred to as conflict). The factors used in the calculation of conflict are described, as well as possible combinations...
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Recently, the issues of theory and practice of multi-position systems for various purposes remain relevant. A feature of such systems is the use of spatiotemporal methods of processing information embedded in wave fie...
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Spectral efficiency of the optical fiber within the cable construction signal transmission is being analyzed. Spectral efficiency modifying variety formed by bit/baud rate and frequency/wavelength spectrum bandwidth p...
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ISBN:
(纸本)9781728106069
Spectral efficiency of the optical fiber within the cable construction signal transmission is being analyzed. Spectral efficiency modifying variety formed by bit/baud rate and frequency/wavelength spectrum bandwidth pairwise combining are being expanded to spatial multiplexing. Spatial - spectral efficiency category and parameter are proposed. Baud-wavelength efficiency parameter implementation is being discussed. Analytic equations are derived for signal transmission rate calculations using spectral efficiency parameter as input data. Signal transmission rate calculation examples are presented.
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