Development of the procedure for forming non­stationary signal structures based on multicomponent LFM signals

Korchinskyi, V.; Hadzhyiev, Matin; Pozdniakov, Pavlo; Kildishev, V.I.; Hordiichuk, Valerii

doi:10.15587/1729-4061.2018.151816

Cited by 5 publications

(2 citation statements)

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“…-spatial multiplexing (distribution of data flows in different fibers or, in the future, in different cores of one optical fiber [11]); -frequency (spectral) multiplexing (for example, in dense spectral compression systems -DWDM [12]); -time multiplexing (distribution of the data flow into elementary consecutive time fragments, each of which corresponds to a separate channel [13]); -polarization multiplexing (distribution of channels according to the system of polarization axes of the optical signal [14]); -signal or logic multiplexing (phase modulation, amplitude modulation, forming pulses with different low-frequency envelope shapes, linear-frequency modulation [15], etc. ); -complex multiplexing (for example, phase-code manipulation).…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Multiplex technique of data transmission in residual class systems

Bahachuk,

Hadzhyiev,

Nazarenko

et al. 2023

EEJET

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The research object: data transmission in optical communication lines. The subject of research is algorithms for the construction of digital data and methods of their transmission over buses in optical computer systems and in backbone fiber-optic systems. The problem to be solved is the need to devise new methods that ensure increased reliability and cryptographic stability of optical transmission systems. To solve the task, the issue of expanding the theory of timer signal structures and the system of residual classes for the organization of multifactorial multiplex data transmission through the channels of modern information transmission systems was investigated. The factor space is defined (as an example) for fiber optic transmission systems where different multiplexing options are used or may be used. The possibility of adapting algorithms for the construction of digital signal structures for their further transmission in the system of residual classes by various methods of multiplexing has been substantiated. The main principles of transmission were considered: the principle of independence of multiplexing the transmission of residues on each module and the principle of logical dependence and physical independence of the system of channels for transmission of residue values for a specific module of a specific system of residue classes. The basic principle is that at each specific point in time in the multivariate binary space, only one of the possible values of each factor can be equal to unity. A comparison with existing transmission systems shows that the proposed technique could provide data transmission at a speed of up to 16 Tbit/s in a transmission bandwidth of 200 THz. At the same time, the capacity of the alphabet of transmitted characters will be 39468 different characters. It also provides a significant increase in the reliability of the entire transmission system

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Multiplex technique of data transmission in residual class systems

Bahachuk,

Hadzhyiev,

Nazarenko

et al. 2023

EEJET

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show abstract

“…Structural secrecy [7] is aimed at complicating the recognition of the structure of signal-code constructions and is implemented at the second level of the OSI model. Energy secrecy [8,9] characterizes the ability of a communication system to mask the transmitted signal under the level of interference to complicate its interception by means of enemy electronic intelligence. This type of secrecy is implemented at the first level of the OSI model through various methods of spreading the spectrum of the original narrowband signal.…”

Section: Introductionmentioning

confidence: 99%

Method of information protection based on the integration of probabilistic encryption and noise immune coding

Korchynskyi,

Hordiichuk,

Kildishev

et al. 2023

reks

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The subject matter of this article is the processes of increasing information security in communication systems to solve applied problems that are critical in the transmission of confidential data. The goal is to develop a multi-stage method for protecting information from unauthorized access, based on probabilistic encryption integration, error-correcting code, and error decorrelation. The tasks to be solved are as follows: to develop a probabilistic encryption algorithm that considers the entropy of the characters’ appearance in a message; to implement iterative coding with variable parameters of the information bits matrix; and to implement error decorrelation based on the generated matrix by interleaving information and check bits according to a given algorithm. Methodology: theory of signal communication and signal processing, theory of cryptography, theory of noise-resistant codes, probability theory, statistical analysis. The following results were obtained: a multi-stage method for protecting information from unauthorized access was proposed, in which at each step of data conversion, information secrecy is increased; probabilistic encryption was implemented, which considers the entropy of a discrete source of information when forming a space of random combinations; based on an iterative code with specified matrix parameters, an additional increase in the space of random combinations was implemented; error decorrelation reduces the multiplicity of errors in codewords and ensures mixing of bits according to a predetermined law. Conclusions. The scientific novelty of the results obtained is as follows: 1) an improved method of information protection from unauthorized access is proposed, based on probabilistic encryption integration, interference-resistant coding, and error decorrelation; 2) increasing information concealment is realized by eliminating the main shortcomings of probabilistic encryption, which did not take into account the entropy of the symbols of the open message; 3) it is proposed to form the space of random combinations taking into account the average probability of the appearance of a symbol in open texts, which will allow the output of a probabilistic cipher to form a stream of random combinations, which, according to its statistical properties, is close to the uniform distribution law; 4) further development of information protection methods based on interference-resistant coding and error decorrelation with encryption functions is received; 5) a further development of the statistical encryption method is the use of all redundant elements for both probabilistic encryption and interference-resistant coding.

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Adaptive Synthesis of Wideband Timer Signals in the Conditions of Radio-Electronic Warfare

Hordiichuk,

Korchynskyi,

Kildishev

et al. 2024

2024 IEEE 17th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TC

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Development of the procedure for forming nonstationary signal structures based on multicomponent LFM signals

Cited by 5 publications

References 0 publications

Multiplex technique of data transmission in residual class systems

Multiplex technique of data transmission in residual class systems

Method of information protection based on the integration of probabilistic encryption and noise immune coding

Adaptive Synthesis of Wideband Timer Signals in the Conditions of Radio-Electronic Warfare

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Development of the procedure for forming non­stationary signal structures based on multicomponent LFM signals

Cited by 5 publications

References 0 publications

Multiplex technique of data transmission in residual class systems

Multiplex technique of data transmission in residual class systems

Method of information protection based on the integration of probabilistic encryption and noise immune coding

Adaptive Synthesis of Wideband Timer Signals in the Conditions of Radio-Electronic Warfare

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Development of the procedure for forming nonstationary signal structures based on multicomponent LFM signals