6-14

UDC 621.396.67
DOI: 10.15350/2306-2819.2018.4.6

PROTECTION OF INFORMATION IN COMMUNICATION CHANNELS

USING THE METHOD OF FORMATION OF MASKING

SIGNAL-LIKE INTERFERENCE

O. I. Bokova¹, V. B. Avdeev², S. N. Panychev², S. V. Kanavin¹, N. S. Khokhlov¹
¹Voronezh Institute of the Ministry of the Interior of Russia,
53, prosp. Patriotov, Voronezh, 394065, Russian Federation
E-mail: sergejj-kanavin@rambler.ru
² Federal Autonomous Institution "State Research Testing Institute for Problems of Technical Protection of Information of the Federal Service for Technical and Export Control",
36, Studencheskaya Street, Voronezh, 394036, Russian Federation
E-mail: pany4ev@mail.ru

ABSTRACT

Introduction. The task of protecting against the interception of information, circulating in data transmission networks is one of the urgent problems of technical support for special-purpose communication facilities. The purpose of this article is to justify a new method of masking desired information signals in a radio channel using special procedures and devices that ensure the formation of multiplicative masking radio interference from desired radiated signals. Results. In the experimental method, the desired information masked signal itself was used as noise, masking this signal. In this case, the masking multiplicative interference is formed from the desired information masked signal by amplifying it in an amplifier with substantially non-linear properties. The distinctive feature of such interference is its correlation with the original signal, that is, such response or retransmitted interference is signal-like, correlated, multiplicative. Conclusion. The proposed method of masking radio signals in the radio channel is characterized by the simplicity of the hardware implementation. The disadvantage of the method is the complication of the problem of electromagnetic compatibility of radio equipment. It is necessary to study the efficiency of obtained multiplicative masking interference using methods of modeling and experimental testing in laboratory and field conditions in respect of various kinds of desired signals modulation.

KEYWORDS

radio channel; multiplicative interference; amplifying nonlinear element; intermodulation distortions.

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For citation: Bokova O.I., Avdeev V.B., Panychev S.N., Kanavin S.V., Khokhlov N.S. Protection of Information in Communication Channels Using the Method of Formation of Masking Signal-Like Interference. Vestnik of Volga State University of Technology. Ser.: Radio Engineering and Infocommunication Systems. 2018. No 4 (40). Pp. 6-14. DOI: 10.15350/2306-2819.2018.4.6