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article-9_4_2019

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BUILDING DIGITAL BROADCASTING NETWORKING IN THE LOW AND MIDIUM FREQUENCIES

Virgilio Mateus Joao dos Santos,  Malanzhe, Angola, svirgilio5@gmail.com
Yuri A. Kovagin,  St. Petersburg State University telecommunications them. prof. M.A. Bonch-Bruevich, St. Petersburg, Russia, kowalgin@sut.ru

Abstract
The advantages of digital broadcasting systems have become made possible due to the advances in related fields of knowledge, such as psychoacoustics, digital signal processing, digital audio data compression, noise-tolerant coding, anti-group error control, digital modulation techniques, etc.
Of all digital broadcasting systems, only DRM [1-5] and IBOC HD Radio [6] systems are recommended by the International Telecommunication Union (ITU-R) for use in all frequency bands allocated for ground-based digital broadcasting or digital sound broadcasting (and these are the LF, MF, HF , VHF), which is their additional value.
A simple and effective method for developing a topology of a DRM broadcasting network in the low and medium frequency bands, based on the use of data from the International Telecommunication Union (ITU), is considered. The method takes into account the required quality of audio content transmission and the actual distribution of maximum radio noise levels over the service area exceeded for 2% of the transmission time. To illustrate of the proposed method of building a network of digital broadcasting is made on the example of the territory of the Republic of Angola is given.

Keywords:digital broadcasting or digital sound broadcasting, digital broadcasting networks, building digital broadcasting networking, DRM, quality of audio content transmission, distribution of maximum radio noise levels territory the Republic of Angola, low (LF) and medium (MF) frequencies.

References

  1. ETSI ES 201 980 V4.1.1 (2014-01) Digital Radio Mondiale (DRM); System Specification.
  2. European Telecommunication Standard ETSI ES 201 980 v3.1.1 (2009-08), Digital Radio Mondial (DRM) System Specification.
  3. System for digital sound broadcasting in the broadcasting bands below 30 MHz. ITU-R BS.1514-1. – International Telecommunication Union, 2001.
  4. Recommendation ITU-R BS.1615(05/2011). Planning parameters» for digital sound broadcasting at frequencies below 30 MHz. BS Series. Broadcasting service (sound).
  5. Report ITU-R BS.2144 (05/2009). Planning parameters and coverage for Digital Radio Mondiale (FRM) broadcasting at frequencies below 30 MHz. BS Series. Broadcasting service (sound).
  6. National Radio Systems Committee. NRSC-5-C/In-band/on channel Digital Radio Broadcasting Standard, September, 2011. 53 p.
  7. ETSI ETS 300401. Radio Broadcasting System; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers, May 1997.
  8. Stereophonic broadcasting and sound recording: Textbook for universities / Yu.A. Kovalgin, E.I. Vologdin, L.N. Katznelson; Ed. Professor Yu.A. Kovagina. Moscow: Hotline — Telecom, 2014. – 720p.
  9. Kovagin Yu.A., Myshyanov S.V. Evolution of the DAB digital broadcasting system recommended by ITU-R for use in the 174-240 MHz VHF frequency band. Part 1. Broadcasting »Television and Radio Broadcasting, 2016, No. 8, pp. 33-36.
  10. Kovagin Yu.A., Myshyanov S.V. Evolution of the DAB digital broadcasting system recommended by ITU-R for use in the 174-240 MHz VHF frequency band. Part 2. Broadcasting »Television and Radio Broadcasting, 2017, No. 1, pp. 26-29.
  11. Varlamov O.V. Features of the frequency-territorial planning of broadcasting networks DRM bands LF and MF. T-Comm. 2013. No.9, pp. 43-46.
  12. Varlamov O.V. Correct planning of DRM broadcasting networks. Telecommunication. 2014. No. 6, pp. 26-34.
  13. Varlamov, O.V, Varlamov, V.O., Distribution of Maximum Levels of Atmospheric Radio Noises in the Low-Frequency and Medium-Frequency Bands over the Territory of the Earth. High-Tech Technologies in the Earth’s Space Research. 2017. Vol. 9. No 5, pp. 42-51.
  14. Recommendation ITU-R BS.368-9.Ground-wave propagation curves for frequencies between 10 kHz and 30 MHz.
  15. Recommendation ITU-R BS.1615-1(05/2011).Planning parameters» for digital sound broadcasting at frequencies below 30 MHz. BS Series. Broadcasting service (sound).
  16. Report ITU-R BS.2144 (05/2009). Planning parameters and coverage for Digital Radio Mondiale (DRM) broadcasting at frequencies below 30 MHz. BS Series. Broadcasting service (sound).
  17. Fundamentals of radio frequency spectrum management. Т.3: Frequency planning of broadcasting and mobile networks. Automation of radio frequency spectrum management / Ed. M.A. Bykhovsky. Moscow: KRASAND, 2012. 368 p.
  18. Recommendation ITU-R BS-1514-2 (03/2011). System for digital sound broadcasting in the broadcasting bands below 30 MHz.
  19. Kovagin Yu.A., Santos Virgilio. The influence of the operating modes of the DRM transmitter on the quality of transmission of audio content in the low and medium frequencies. Proceedings of communication educational institutions. 2019. Vol.5. No. 1, pp. 20-27.
  20. Santos Virgilio Mateus João Dos. Accounting for noise levels at frequencies below 30 MHz when calculating zones maintenance of DRM transmitters. Informatization and communication. 2018. No. 5, pp. 22-30.

Information about authors:
Virgilio Mateus Joào dos Santos, Malanzhe, Angola, Postgraduate student – department of radio communications and broadcasting of St. Petersburg State University telecommunications them. prof. M.A. Bonch-Bruevich, St. Petersburg, Russia
Yuri A. Kovagin, Doctor of technical sciences, professor, department of radio communications and broadcasting of St. Petersburg State University telecommunications them. prof. M.A. Bonch-Bruevich, St. Petersburg, Russia