Items of № 5-2025

Development paths of SDR terrestrial broadcasting networks using artificial neural networks

V.L. Karyakin, Povolzhskiy State University of Telecommunications and Informatics (PSUTI), professor, Dr.Sci.(Tech.); vl@karyakin.ru

UDC 621.391

DOI: 10.34832/ELSV.2025.67.5.001

Abstract. The article presents the results of a study of the development paths of terrestrial SDR broadcasting technology in the DVB-T2 standard. The scheme of the SDR multiplex formatter with a BER processing device in the return channel is given. A methodology for optimizing SDR equipment on the GNU Radio platform using the GNN artificial intelligence architecture based on GNU Radio flow diagrams is proposed. The main stages of GNN application are presented. An algorithm for training an artificial neural network is provided. The example of training using the SDR transmitter flow diagram demonstrates the concept of training artificial neural networks (ANN). It is noted that the real implementation of the ANN training process is much more complex, and it will require a deep understanding of both the operation of SDR equipment and machine learning. It is emphasized that the ultimate goal of the research is to ensure the competitive advantages of regional SFN networks in the Russian and global markets.

Keywords: multiplexs formatter, BER processing, terrestrial SDR broadcasting, artificial neural network, DVB-T2 standard.

For citation: Karyakin, V.L. Development paths of SDR terrestrial broadcasting networks using artificial neural networks / V.L. Karyakin // Electrosvyaz. – 2025. – No. 5. – P. 6-11. (in russian)

Study of electric and magnetic fields influence on fiber-optic communication system with quantum-cryptographic equipment

E.Y. Bushuev, Moscow Technical University of Communications and Informatics (MTUCI), senior lecturer; eb@radiotest-mtuci.ru

D.V. Bolotov, MTUCI, National Research University MPEI, engineer; d.v.bolotov@mtuci.ru

S.E. Grychkin, MTUCI, senior lecturer; sg@radiotest-mtuci.ru

E.P. Stroganova, MTUCI, professor, Dr.Sci.(Tech.); es@radiotest-mtuci.ru

O.S. Belova, National Research University MPEI, associate professor, Ph.D.; belovaos@mpei.ru

UDC 621.391.63

DOI: 10.34832/ELSV.2025.67.5.002

Abstract. In this paper, we investigate the possibility of using an atmospheric optical channel for communication with an unmanned aerial vehicle. We consider the features of turbulence occurrence in the ground layer of the troposphere, in which the terminals of the atmospheric line of communication systems are located. We describe the methodology and the experimental stand. The main optical, polarization and network parameters were measured in the experiment in the presence of disturbance sources in the atmospheric optical segment. The results of the experimental study of the influence of turbulence on the atmospheric channel of the communication system showed a significant influence of turbulence, which must be taken into account when designing communication systems.

Keywords: quantum key distribution, fiber optic communication line, electric field, magnetic field, lightning discharge.

For citation: Bushuev, E.Y. Study of electric and magnetic fields influence on fiber-optic communication system with quantum-cryptographic equipment / E.Y. Bushuev, D.V. Bolotov, S.E. Grychkin et al. // Electrosvyaz. – 2025. – No. 5. – P. 12-19. (in russian)

Alternative series of preferred values for passive electronic elements

S.A. Iasinskii, CJSC “Institute of Telecommunications”, leading specialist, associate professor, Dr.Sci.(Tech.), yasinsky777@mail.ru

UDC 621.391

DOI: 10.34832/ELSV.2025.67.5.003

Abstract. The article suggests an alternative series of preferred values for passive electronic elements in the circuits of electronic equipment and electrical engineering, which, in comparison with the current series of preferred values, allows for the equivalent replacement of any nominal element by two elements with other nominal values. The resulting effect of interchangeability of elements in the series of preferred values for passive electronic elements contributes to an increase in the maintainability of telecommunication products, and in the future, it is more effective to solve the problem of import substitution in radio electronics and electrical engineering.

Keywords: passive electronic elements, series of preferred values, golden ratio, geometric progression.

For citation: Iasinskii, S.A. Alternative series of preferred values for passive electronic elements / S.A. Iasinskii // Electrosvyaz. – 2025. – No. 5. – P. 19-24. (in russian)

Method and device for interference suppressing based on a digital filter bank

E.M. Lobov, Moscow Technical University of Communications and Informatics (MTUCI), head of a laboratory, associate professor, Dr.Sci.(Tech.); e.m.lobov@mtuci.ru

D.N. Shubin, MTUCI, assistance lecturer; d.n.shubin@mtuci.ru

A.D. Grigorieva, MTUCI, master’s student; a.d.grigoreva@mtuci.ru

UDC 621.396.24

DOI: 10.34832/ELSV.2025.67.5.004

Abstract. A method and device for suppressing interference from third-party radio stations based on a digital filter bank have been developed. Analytical and experimental results of a study of the noise immunity of broadband signal reception with the participation of a narrowband interference rejector and with the help of the proposed device for combating narrowband interference based on a bank of digital filters are presented. The results were obtained as a result of analytical calculations and experimental studies. Within the framework of experimental studies, a comparison of the two specified options for signal reception is carried out using statistical modeling and processing of a real broadband signal from the air.

Keywords: high frequency band, interferences, digital filter bank, matched filter, colored noise, wideband signal, noise immunity performance.

For citation: Lobov, E.M. Method and device for interference suppressing based on a digital filter bank / E.M. Lobov, D.N. Shubin, A.D. Grigorieva // Electrosvyaz. – 2025. – No. 5. – P. 25-33. (in russian)

Masking encrypted FPV video stream when controlling UAVs. Part II. Models training and experiments

А.A. Berezkin, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications (SPbSUT), associate professor, Ph.D.; berezkin.aa@sut.ru

A.A. Chenskiy, SPbSUT, masters student; chenskii.aa@sut.ru

R.V. Kirichek, SPbSUT, rector, professor, Dr. Sci.(Tech.); kirichek@sut.ru

UDC [004.622+004.021+004.032.26]:[004.627:004.932]

DOI: 10.34832/ELSV.2025.67.5.005

Abstract. To reduce network delays and packet losses during FPV control of unmanned aircraft systems via packet data networks, it is necessary to ensure a high degree of compression of video stream frames. For this purpose, an approach based on the use of variational autoencoders and subsequent quantization and compression of video stream frames in the internal latent feature space of the neural network is actively used. This paper presents the development of this approach, which consists in masking a binary sequence obtained from the values of the latent feature space of the neural network autoencoder. In the second part of the paper, the masked value recovery models (NNBSR, SNNBSR-M, SNNBSR-F, LgRPM, LnRPM) are trained, and experiments are performed on the masking neural network codec.

Keywords: variational autoencoder, quantization, data compression, neural networks, latent space compression, masking, video stream compression, FPV control, UAV, unmanned aerial vehicle, unmanned systems.

For citation: Berezkin, А.A. Masking encrypted FPV video stream when controlling UAVs. Part II. Models training and experiments / А.A. Berezkin, A.A. Chenskiy, R.V. Kirichek // Electrosvyaz. – 2025. – No. 5. – P. 34-41. (in russian)

Algorithm of autocoherent interference suppression in digital mobile radio communication systems using antenna arrays

V.M. Balyukov,The M.I. Krivosheev National Research Centre for Telecommunication (NRCT), deputy director of the mobile communications research center, balyukovvm@nic-t.ru

V.V. Skomorokhov, NRCT, lead engineer, associate professor, Ph.D.; skomorohovvv@nic-t.ru

UDC 621.391.8

DOI: 10.34832/ELSV.2025.67.5.006

Abstract. The article considers an approach to attenuation of radio interference affecting the input path of a radio receiver by extracting a useful signal using antenna arrays. This approach makes it possible to extract useful signals from a set of interfering interferences of a common channel using only the known properties of these useful signals, i.e. without using prior knowledge about the content or direction of arrival of the transmitted useful signal and interference.

Keywords: linear antenna arrays, beamforming by antenna arrays, signal processing by antenna arrays, interference suppression, multipath channels.

For citation:Balyukov, V.M. Algorithm of autocoherent interference suppression in digital mobile radio communication systems using antenna arrays / V.M. Balyukov, V.V. Skomorokhov // Electrosvyaz. – 2025. – No. 5. – P. 42-49. (in russian)

Development and analysis of image coding algorithm based on ECC, AES and spatial curves

 A. Basel, Moscow technical university of communications and informatics (MTUCI), intern of the MTS Department; baselabood@Hotmail.com

V.V. Goncharov, MTUCI, professor, Dr.Sci.(Tech.); v.v.goncharov@mtuci.ru

UDC 004.056.55

DOI: 10.34832/ELSV.2025.67.5.007

Abstract. This article presents an enhanced encryption of images based on a combination of cryptographic methods – ECC (Elliptic Curve Cryptography) and AES (Advanced Encryption Standard) – along with using three different types of space-filling curves: Morton curve mapping, zigzag scanning, and Hilbert curve. These methods ensure effective protection and processing of images, maintaining their confidentiality and integrity during transmission and storage. The article thoroughly examines each encryption method and mapping approach, explaining their principles and advantages in the context of image protection. Experimental results demonstrate the effectiveness of the ECC and AES combination with different space-filling curves in encrypting and decrypting images.

Keywords: ECC, AES, image encryption, Morton curve mapping, zigzag scanning, Hilbert curve, cryptography, data security.

For citation: Basel, A. Development and analysis of image coding algorithm based on ECC, AES and spatial curves / A. Basel, V.V. Goncharov // Electrosvyaz. – 2025. – No. 5. – P. 50-59. (in russian)

Designing scalable access control systems and management with face recognition

D.O. Myrov, RUT MIIT, student; Myrov.dima2016@yandex.ru

A.V. Gotin, RUT MIIT, student; art2003got@gmail.com

L.O. Myrova, The M.I. Krivosheev National Research Centre for Telecommunication, chief researcher, professor, Dr.Sci.(Tech.); myrovalo@nic-t.ru

UDC 004.5

DOI: 10.34832/ELSV.2025.67.5.008

Abstract. The article is devoted to the development of a method for constructing a scalable biometric access control system. Modern approaches to access control, principles of biometric authentication, and features of face recognition technology are considered. Protocols and mechanisms for secure data transmission are developed, key requirements of Russian legislation for biometric processing are systematized, and a model for their practical implementation is proposed that meets the security requirements of modern large enterprises.

Keywords: access control and management system, biometric face authentication, corporate networks, confidentiality, fault tolerance, security.

For citation: Myrov, D.O. Designing scalable access control systems and management with face recognition / D.O. Myrov, A.V. Gotin, L.O. Myrova // Electrosvyaz. – 2025. – No. 5. – P. 59-67. (in russian)