Serhii Haliuk

Chernivtsi National University · Radio Engineering and information security

This paper suggests an approach to generate pseudo-random sequences based on the discrete-time model of the simple memristive chaotic system. We show that implementing Euler’s and Runge–Kutta’s methods for the simulation solutions gives the possibility of obtaining chaotic sequences that maintain general properties of the original chaotic system. A...

Nowadays are being held intensive researches involving the use of deterministic chaos in communication systems. Indeed chaotic oscillations in such systems serve as a carrier of information signals, and means of encryption, both in hardware and in software. This work is devoted to the complex analysis of the practical implementation of a chaotic se...

In the paper, an approach to frequency modulation is presented using a split-ring resonator (SRR) loaded by a varactor diode. The modulation occurs due to the continuous time variation of capacitance of the varactor diode via changing of its bias voltage by the signal which is necessary to modulate. The modulation signal is used for bias voltage. A...

In this article, we described specifics of pixels permutations based on the discretized, two-dimensional Chirikov standard map. Some properties of the discretized Chirikov map can be used by an attacker to recover the original images that are studied. For images with dimensions N ´ N the vulnerability of permutations allows for brute force attacks,...

In this article a brief overview of the study of the frequency of onedimensional chaotic systems and the statistical characteristics of PRS generators of two types based on them have been introduced. The resistance of generators on the basis of one-dimensional chaotic systems has been evaluated and two methods of generation of PRS of bits with the...

In the paper the development of the components of communication means is considered based on the wire metastructures. This approach is novel and quite promising due to the metamaterials provides new opportunities for the radio engineering devices such as antennas, absorbers etc. First of all it makes possible decreasing of the dimensions of devices...

The generators of chaotic signals and some areas of their application in communications and cryptography are analyzed. Low security and inefficiency of encryption algorithms using low-dimensions chaotic recurrent maps are shown. Problems of software implementation chaotic systems are discussed

Since mathematical models describing the work of transmitting-receiving units of modern chaotic information systems have become more complex, modeling of information properties of deterministic chaos is becoming more topical. The paper presents the results of a wide range of works related to the modeling of dynamic chaos usage in modern telecommuni...

Nowadays are being held intensive researches involving the use of deterministic chaos in communication systems. Indeed chaotic oscillations in such systems serve as a carrier of information signals, and means of encryption, both in hardware and in software. This work is devoted to the complex analysis of the practical implementation of the chaotic...

Since mathematical models describing the work of transmitting-receiving units of modern chaotic information systems have become more complex, modeling of information properties of deterministic chaos is becoming more topical. The paper presents the results of a wide range of works related to the modeling of dynamic chaos usage in modern telecommuni...

The method of the hidden information transmission is offered with the use of high-quality chaotic synchronization and symbolic dynamic of chaotic orbits. The tent map is used as a chaotic system.