Methods of synthesis of signals with prescribed properties

Naumenko, N. I.; Stasev, Yu.V.; Kuznetsov, Alexandr

doi:10.1007/s10559-007-0052-8

Cited by 41 publications

(6 citation statements)

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“…An improvement in the imitation resistance index of the ICS is achieved due to the fact that the CSs have improved ensemble properties in comparison with linear classes of signals, in particular, M-sequences. In Table 2 Analysis of the data given in Table 2, suggests that maximum lateral emissions values of the CS, as well as the statistical characteristics of this class of signals are not inferior to the corresponding characteristics of the signals constructed using Msequences and characteristic discrete signals [7][8][9][10][11][12][21][22][23][24][25][26][27][28][29][30][31]. This, in turn, indicates that the use of a CS provides noise immunity for receiving signals no worse than when applying the decree of signals based on linear formation laws.…”

Section: Security Indicators Evaluationmentioning

confidence: 99%

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Properties and Formation of Ofdm and Derived Signals

Zamula¹,

Morozov²,

Kalashnykova³

et al. 2020

IJC

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The article discusses the technology of forming signals used in mobile, information and telecommunication systems, and also provides an analysis of promising technologies that can be used in wireless communication systems of broadband access. It is shown that the widely used modulation scheme with orthogonal frequency division (OFDM) has a number of drawbacks, which can lead to a decrease in system performance. Alternative technologies for generating signals are presented, in particular, a technology based on windowed signal processing (W-OFDM), a technology based on time division (w-OFDM); UFMC technology and others to eliminate the disadvantages of OFDM technology. New points of view are proposed on the use of multi-carrier transmission technology in the form of multiplexing with orthogonal frequency division (in order to increase the security of modern wireless broadband access communication systems from external and internal threats), a class of non-linear discrete cryptographic sequences to form a physical data carrier – signal.

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Section: Security Indicators Evaluationmentioning

confidence: 99%

“…The research results may be useful in other applications of modern computer and telecommunication systems [9][10][11][12][13]18], for example, to optimize computing [21,[32][33][34][35][36], cryptography [20,[28][29][30], etc.…”

Section: Derived Cryptographic Signal Systems Synthesismentioning

confidence: 99%

Properties and Formation of Ofdm and Derived Signals

Zamula¹,

Morozov²,

Kalashnykova³

et al. 2020

IJC

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“…It should be taken into consideration when developing a model that would allow wireless sensor network battery lifetime forecasting. To forecast battery lifetime in practical implementation of the network 802.15.4 / ZigBee one should define activity cycles by data transmission as well as the current generated from the battery during different dynamic operation especially during transceiver (main power consumer in devices) activation operations [5,6].…”

Section: Print Issn 1727-6209 On-line Issn 2312-5381mentioning

confidence: 99%

“…The breakdown is used to design centralized monitoring and management systems whereat a coordinator either processes information coming from the whole network itself or transfers it to the device having more resources (for instance, system server) [5].…”

Section: Print Issn 1727-6209 On-line Issn 2312-5381mentioning

confidence: 99%

Optimization of Lifetime in Wireless Monitoring Networks

Kovalova¹,

Babenko²,

Oksiiuk³

et al. 2020

IJC

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Wireless network finds application in communal facilities monitoring and management systems. One of the basic requirements for the construction of a wireless monitoring network with autonomous power supply is the guaranteed network lifetime. Up-to-date challenges in the field of wireless monitoring networks are creation of universal hardware platforms that allow for usage of widespread proprietary transceivers of different manufacturers aiming at creating network topologies raising energy efficiency and lifetime of WMN. The article describes a model of a wireless network allowing evaluation of its lifetime by energy parameters and dynamic reconfigurations induced by external influence. On the basis of the represented test results one may conclude that energy consumption is defined by the level of the application stack of the protocol ZigBeе and doesn’t depend on PHY and MAC layers of the protocol 802.15.4. Considering energy consumption of the data transmission process, potential increase in the lifetime of the devices and network as a whole is mostly controlled by the sizes of useful messages.

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“…В рамках дальнейших исследованиях будут представлены результаты моделирования ряда других способов формирования расширяющих последовательностей, рассмотренных в наших предыдущих работах [27][28][29][30][31].…”

Section: выводыunclassified

Hiding information in images using pseudo-random sequences

Смірнов¹,

Горбачова²,

Кузнецов³

2020

Computer Science and Cybersecurity

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In this article are discussed techniques of hiding information messages in cover image using direct spectrum spreading technology. This technology is based on the use of poorly correlated pseudorandom (noise) sequences. Modulating the information data with such signals, the message is presented as a noise-like form, which makes it very difficult to detect. Hiding means adding a modulated message to the cover image. If this image is interpreted as noise on the communication channel, then the task of hiding user’s data is equivalent to transmitting a noise-like modulated message on the noise communication channel. At the same it is supposed that noise-like signals are poorly correlated both with each other and with the cover image (or its fragment). However, the latter assumption may not be fulfilled because a realistic image is not an implementation of a random process; its pixels have a strong correlation. Obviously, the selection of pseudo-random spreading signals must take this feature into account. We are investigating various ways of formation spreading sequences while assessing Bit Error Rate (BER) of information data as well as cover image distortion by mean squared error (MSE) and by Peak signal-to-noise ratio (PSNR). The obtained experimental dependencies clearly confirm the advantage of using Walsh sequences. During the research, the lowest BER values were obtained. Even at low values of the signal power of the spreading sequences (P≈5), the BER value, in most cases, did not exceed 0,01. This is the best result of all the sequences under consideration in this work. The values of PSNR when using orthogonal Walsh sequences are, in most cases, comparable to other considered options. However, for a fixed value of PSNR, using the Walsh transform results in significantly lower BER values. It is noted that a promising direction is the use of adaptively generated discrete sequences. So, for example, if the rule for generating expanding signals takes into account the statistical properties of the container, then you can significantly reduce the value of BER. Also, another useful result could be increasing PSNR at a fixed (given) value of BER. The purpose of our work is to justify the choice of extending sequences to reduce BER and MSE (increase PSNR).

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Methods of synthesis of signals with prescribed properties

Cited by 41 publications

References 0 publications

Properties and Formation of Ofdm and Derived Signals

Properties and Formation of Ofdm and Derived Signals

Optimization of Lifetime in Wireless Monitoring Networks

Hiding information in images using pseudo-random sequences

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