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Manfred Sneps-Sneppe
Pág. 115 - 125
The confrontation of these two technologies - packet-switching and circuit-switching ? has a long history, and it seems to be incessant. It had started with Asynchronous Transfer Mode technology in the 1990s. The breakup of the Bell System marked a key l...
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Manfred Sneps-Sneppe,Dmitry Namiot
Pág. 58 - 75
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Eugene Tikhonov,Donat Shneps-Shneppe,Dmitry Namiot,Manfred Sneps-Sneppe
Pág. 59 - 70
Possible characteristics of railway communication networks at the stage of coverage growth as potential successors of GSM-R are analyzed in the paper. Communication in such networks can be provided by terrestrial base stations and/or by mobile satellite ...
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Eugene Tikhonov,Manfred Sneps-Sneppe
Pág. 41 - 52
Data transmission using orthogonal functions means combining base carrier signals (scaled by numbers of useful information) into one sent signal. Processing the mixed signal after receiving allows dividing it back into carriers and restoring useful numbe...
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Vasily Kupriyanovsky,Alexander Klimov,Vyacheslav Alenkov,Dmitry Namiot,Manfred Sneps-Sneppe
Pág. 73 - 81
The European Telecommunications Standards Institute (European Telecommunications Standards Institute or, in short, ETSI) is an independent, non-profit organization for standardization in the telecommunications industry. ETSI has successfully standardized...
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Manfred Sneps-Sneppe,Dmitry Namiot
Pág. 48 - 58
The article is devoted to the discussion of the telecommunications development strategy. Communication specialists all around the world are facing the same problem: shifting from circuit switching (CS) to packet switching (CS). We will provide examples t...
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Eugene Tikhonov,Manfred Sneps-Sneppe
Pág. 13 - 26
The article introduces the theoretical foundations of the modern method of storing, transmitting and processing signals: digital processing. It?s a way to use relatively small number of values instead of continuous real signal. For example, when tra...
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Manfred Sneps-Sneppe,Vasily Kupriyanovsky,Dmitry Namiot
Pág. 53 - 59
This article is devoted to the discussion of railway signaling according to the GSM-R standard. Currently, equipment manufacturers are advertising the newest direction of mobile communication 5G, recalling that GSM-R standards will be maintained only unt...
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Eugene Tikhonov,Manfred Sneps-Sneppe
Pág. 53 - 60
The article introduces powerful common tool for the signals analysis ? basics of a spectral analysis. It focuses on decomposition into complex sine waves (harmonic sinusoids) called the Fourier transform. Based on qualitative review of the natural phenom...
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Eugene Tikhonov,Manfred Sneps-Sneppe
Pág. 17 - 24
The article describes one of the powerful tools for the signals analysis while transmission ? complex mathematics. Here the basic concepts (complex numbers, complex signal as expansion of a real signal to a complex-valued function) and some operations (e...
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