Proceedings of NIIR, No 3, 2013
INFOCOMMUNICATION TECHNOLOGIES
UDC 658.014.1:654
PROPOSALS ON REVIEWING THE PROCEDURES FOR DEALING WITH
DEBTORS IN THE INTERNATIONAL TELECOMMUNICATION UNION – THE
UN SPECIALIZED AGENCY
N.P. REZNIKOVA, Chief Research Scientist, Doctor of Economic Sciences, professor, FSUE NIIR,
M.V. IVANKOVITCH, Head of Laboratory, Candidate of Engineering Sciences, Research and
Technology Center for Analysis of EMC, FSUE NIIR
К.N. KULIKOVA, senior tutor, Department “Management”, MTUCI
Keywords: the UN specialized agency, International Telecommunication Union (ITU), contributions to ITU, work with debtors, ITU Constitution and Convention, procedures for calculation of payable interests .
Summary. The paper considers the procedures for dealing with debtors in the UN specialized agencies. Considering the importance of the International Telecommunication
Union (the oldest specialized agency of the UN) for development of infocommunication technologies in the Russian Federation, the paper justifies necessary reviewing the outdated procedures for dealing with debtors, and offers proposals on their updating and associated amendments to the Union regulations.
UDC 621. 396
COMPARATIVE REVIEW OF MODERN METHODS FOR FREQUENCY
SYNTHESIS. METHODS OF DIRECT DIGITAL SYNTHESIS AND THEIR
CLASSIFICATION
Y.A. NIKITIN, Senior Research Scientist, Candidate of Engineering Sciences, LONIIR (FSUE NIIR branch)
Keywords: digital frequency synthesis, finite-state machine, pulse counter, accumulating adder, pulse absorber, spurious spectral components.
Summary. The paper considers the methods of direct digital synthesis (DDS), their review and comparative analysis, and describes the DDS structures based on the combination of pulse counters ( PC ), accumulating adders ( AA ) and pulse absorbers ( PA ).
It also suggests an option of DDS classification.

UDC 621.396.623
LANGUAGE IDENTIFICATION FOR AUDIO MESSAGES BASED ON ACOUSTIC
PARAMETERS OF SPEAKER’S VOICE
I.A. SHALIMOV, contract serviceman, Doctor of Engineering Sciences
А.M. SOMOV,
Chief Research Scientist, Research and Technology Center for Development of
Complex Radio Systems, FSUE NIIR, professor, Doctor of Engineering Sciences, corresponding member of the Academy of Cryptography of the Russian Federation
М.A. BESSONOV, contract serviceman
Keywords: language identification , automatic speech recognition, acoustic parameters,
Gaussian Mixture Models, artificial neural networks.
Summary. The paper contains the results of studies on the applicability of artificial neural networks and Gaussian Mixtures Model under the task of language identification for audio messages. Mel-Frequency Cepstral Coefficients (MFCC) are used as acoustic parameters of the speech signal. As a conclusion, the paper finds it necessary to combine the methods of language identification when using a two-step procedure to identify the language for small-range devices to provide unlicensed use of equipment of standards
802.11ac and 802.11ad in the Russian Federation.
UDC 621.396.623
ANALYSIS OF STATUS AND DEVELOPMENT OPPORTUNITIES FOR
LANGUAGE IDENTIFICATION TECHNOLOGIES OF AUDIO MESSAGES
I.A. SHALIMOV, contract serviceman, Doctor of Engineering Sciences
М.A. BESSONOV, contract serviceman
Keywords: language identification, automatic speech recognition , acoustic parameters, prosodic parameters.
Summary. The paper reviews the works of foreign authors in the field of language identification for audio messages based on acoustic, lexical and prosodic approaches.
This review covers the articles issued in the period from early 90s of the 20th century to
10s of the 21st century. The results of studies have been analyzed making conclusions on development opportunities for automatic language identification systems of audio messages.

DIGITAL TELEVISION BROADCASTING
ADVANCEMENT IN INTERNATIONAL RESEARCH OF INTEGRATED
BROADCAST-BROADBAND SYSTEMS
M.I.
KRIVOSHEEV, Research Adviser, FSUE NIIR
V.G. FEDUNIN, Leading Research Scientist, Department of International Legal Protection in the field of Digital TV and Radio Broadcasting, Research and Technology Center for Digital TV Broadcasting,
FSUE NIIR
E.G. USTNOVA, Leading Engineer, Department of International Legal Protection in the field of digital
TV and radio broadcasting, Research and Technology Center for Digital TV Broadcasting, FSUE NIIR
Keywords: TV broadcasting with Internet access, international research of integrated broadcast-broadband systems (IBB).
Summary: The paper considers the initial stage of research in respect of integrated broadcast-broadband systems (IBB) in ITU-R Radiocommunication Sector of the
International Telecommunication Union. It also reports that a new Recommendation has been adopted and a draft Report has been developed on these systems. Basic requirements to IBB systems are also laid down. The paper provides examples of systems developed in Europe and Japan.
SATELLITE COMMUNICATION AND BROADCASTING SYSTEMS
UTC 621.396.933.42
LF/MF GROUND-WAVE PROPAGATION IN THE SUBARCTIC REGION
A.U. ZHILTSOV, former employee, FSUE NIIR
Keywords: ground wave, ground conductivity.
Summary: The paper provides results of experimental researches for LF and MF radio links with ground waves operated in permafrost conditions. Field strength was measured for vertically and horizontally polarized signals on land and sea routes. Performance efficiency of transmit-and-receive antennas of different configurations was evaluated.
The paper gives recommendations to increase the reliability of radio link performance in the North.
UTC 621.396
POSSIBLE SHARING STUDY ON A POTENTIAL GSO MSS SYSTEM WITH
EXISTING RUSSIAN RADIORELAY STATIONS WITHIN THE FREQUENCY
BAND 22-26 GHz
M.V. MYSEV, Chief of Laboratory, Research and Technology Center for Analysis of EMC, FSUE
NIIR
S.S.
UVAROV, Junior Research Scientist, Research and Technology Center for Analysis of EMC,
FSUE NIIR
Keywords: mobile-satellite service, World Radiocommunication Conference, electromagnetic compatibility.
Summary: The paper focuses on issues of electromagnetic compatibility (EMC) between geostationary MSS systems with existing fixed service stations within the frequency band
22-26 GHz. The authors performed analysis in the framework of the study carried out by the Russian Administration under WRC-15 Agenda item 1.10.

UTC 621.396
NECESSARY RISK-BASED ASSESSMENT FOR RADIO FREQUENCY
PROVISIONING AND TO ENSURE INTERNATIONAL LEGAL PROTECTION
(ILP) FOR GEOSTATIONARY-SATELLITE NETWORKS
N.A. KHOKHLACHEV, Leading Research Scientist, Candidate of Economic Sciences, RTD-071,
FSUE NIIR,
Keywords: radio frequency provisioning, international legal protection, risks, geostationary-satellite networks, redundancy.
Summary: The paper justifies the necessity of risk-based assessment for frequency provisioning and international legal protection of geostationary-satellite networks. It considers different types of risks arising both when reserving orbital-frequency resource and at different stages of the life cycle of creating and operating satellite networks
(systems).
RADIOCOMMUNICATION THEORY AND ENGINEERING
UTC 535.131
N.V. Lemeshko , Senior Research Scientist, Candidate of Technical Sciences, Research and Technology
Center for Analysis of EMC, FSUE NIIR
S.S. Zakharova, Candidate of Technical Sciences, Assistant Professor, MIEM Department “Radio electronics and telecommunications”, R&D University of Higher School of Economics
EMISSION CALCULATION FOR SPATIAL CURVILINEAR CONDUCTORS
Keywords: electromagnetic compatibility, virtual certification, simulation, calculations, curvilinear conductor, decreasing the computational effort, disassembly.
Summary: The paper provides generalized formulas to calculate components of electromagnetic emission, generated at the chosen observation point by electrically short spatial curvilinear conductors. The paper considers this issue in the context of developing the theory of simulating certification tests for radio systems in respect of radiating radio noise.
UTC.621.375.127 (088.8)
V.S. EFREMOV , former employee, FSUE NIIR
STABILIZATION OF MODE FOR AB-CLASS AMPLIFIERS
Keywords: stabilization, mode, voltage, bias, cut-off, distortions, minimum arm current detector.
Summary: The paper defines the criterion of optimal voltage bias for amplifiers of this class and methods for its regulation. A specific technical solution is proposed, permitting amplifiers to self-adapt.
UTC 621.396
G.A. FOKIN, Senior Research Scientist, LONIIR (FSUE NIIR branch), RTL 4222
TECHNIQUE FOR LINE-OF-SIGHT IDENTIFICATION IN RADIO LINKS OF 4G
MOBILE NETWORKS WITH SPATIAL SIGNAL PROCESSING
Keywords: LTE, line-of-sight identification, combined multi-beam components, antenna array, spatial dimensions, simulation modelling.
Summary: The paper proposes the technique for line-of-sight identification in radio links of 4G mobile networks with spatial signal processing in the part between the source

and receiver of radio emission designed for radio monitoring. The operational capabilities of the proposed technique were assessed through Matlab simulation modelling.
UTC 621.396
G.A. FOKIN, Senior Research Scientist, LONIIR (FSUE NIIR branch), RTL 4222
SIMULATION MODELING OF RADIO WAVE PROPAGATION IN RADIOLINKS
OF 4G MOBILE NETWORKS WITH SPATIAL SIGNAL PROCESSING
Keywords: LTE, pulse-response characteristics, multipath propagation, antenna array, spatial dimensions, simulation modelling.
Summary: The paper analyses the possibility to use techniques of simulation modelling for the process of radio wave propagation in mobile communication networks with spatial processing of 3GPP TR 25.996 signals, aiming at positioning radio emission sources in LTE networks. Additional software modules are proposed, which combine several beams for a circular array of radio receiver.