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Influence of Synchronization Signal Inaccuracy on DVB-T2 Local Content Insertion

https://doi.org/10.32603/1993-8985-2018-21-1-19-24

Abstract

The article is aimed at specifying criteria of synchronization signal inaccuracy when DVB-T2 system local content re-placement cannot be carried out. Some settings of digital information stream are set as the initial data. The first part of the article specifies network delay calculation method. The second part of the article considers the signal cycle instability impact on estimation of local content device delay during its insertion in global information flow. Network delay saw-toothlike dependence on time is revealed, statistical parameters of synchronization signal instability are specified.  The third part of the article deals with analysis of method of substitution of two independent information flows by regionali-zation device. A model of T2 superframes comprising baseband frames (BB frames) which belong to different physical layer pipes (PLP) is described. The conditions under which the local information insertion becomes impossible are de-fined. Besides, the article considers other reasons of failure during single frequency networks (SFN) processing of local content insertion dealing with synchronization error at different stages of information flow digital content generation and delivery to DVB-T2.

About the Authors

O. V. Kuharskaya
Far Eastern State Transport University.
Russian Federation

Olga V. Kukharskaya – Dipl.-engineer in Radio Communication, Broadcasting and Television (2013), Siberian State University of Telecommunications and Information Sciences, postgraduate student of Far Eastern State Transport University. Engineer in FGUP RTRN.

The author of five scientific publications.

Area of expertise: digital video broadcasting, DVB-T2TV network design, network synchronization and local content insertion. 

47, Serysheva Str., 680021, Khabarovsk.



E. Z. Savin
Far Eastern State Transport University.
Russian Federation

Evgeny Z. Savin – Ph.D. in Engineering (1996), Professor of Far Eastern State Transport University in Khabarovsk.

The author of more than 100 scientific publications.

Area of expertise: influence of electromagnetic waves on communication lines, impact of external factors on optical fibers, systems of wave division multiplexing. 

47, Serysheva Str., 680021, Khabarovsk.



References

1. ETSI TS 102 773 V1.3.1. DVB; Modulator Interface for a Second Generation Digital Terrestrial Television Broadcasting System (DVB-T2). Introduction 01-2012. Available at: http://www.etsi.org/deliver/etsi_ts/102700_102799/102773/01.03.01_60/ts_102773v010301p.pdf (accessed: 16.02.2018).

2. Karyakin V. L., Karyakin D. V., Morozova L. A. Methods of TV Broadcasting in the Standard DVB-T2 with Inserts Regional Content. T-Comm. 2016, vol. 10, no. 4, pр. 41–46. (In Russian)

3. Kukharskaya O. V., Savin E. Z. Physical features of the replacement of information content in a digital stream for DVB-T2. Uspekhi sovremennoi radioelektroniki [Telecommunications and Radio Engineering]. 2017, no. 6, pp. 55–63.

4. Lhermitte R., Chauviere B., Denlau E. DVB-T2 Broadcasting Method with Publication the Insertion of Regional Content, and Device Used in The Method. Patent US 2013/0215328 A1, August 22, 2013.

5. Kukharskaya O. V., Savin E. Z. Tekhnologiya zameshcheniya informatsionnogo kontenta v potoke T2-MI [Technology Replacement of Information Content in the Flow of T2-MI] Trudy Vserossiiskoi nauchno-prakticheskoi konferentsii tvorcheskoi molodezhi s mezhdunarodnym uchastiem. DVGUPS. 2016, vol. 1, pp. 141–144.

6. The Device for Inserting Local Content. Manual. Available at: http://www.triadatv.ru/upload/iblock/646/PLP-Repleyser_Rukovodstvo-po-ekspluatatsii-V3.0.pdf (accessed: 20.02.2018).

7. Recommendation ITU-R TF.1011-1. Systems, techniques and services for time and frequency transfer. Introduction 1994. Available at: http://www.triadatv.ru/upload/iblock/646/PLP-Repleyser_Rukovodstvo-po-ekspluatatsii-V3.0.pdf (accessed: 20.02.2018).

8. EN 302 755 V1.4.1. DVB; Framing Structure, Channel Coding and Modulation for a Second Generation Digital Terrestrial Television Broadcasting System (DVBT2). Introduction 07-2015. France: European Telecommunications Standards Institute, 2015. Available at: http://www.etsi.org/deliver/etsi_en/302700_302799/3027 55/01.04.01_60/en_302755v010401p.pdf (accessed: 20.02.2018).


Review

For citations:


Kuharskaya O.V., Savin E.Z. Influence of Synchronization Signal Inaccuracy on DVB-T2 Local Content Insertion. Journal of the Russian Universities. Radioelectronics. 2018;(1):19-24. (In Russ.) https://doi.org/10.32603/1993-8985-2018-21-1-19-24

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ISSN 1993-8985 (Print)
ISSN 2658-4794 (Online)