Олареважу Питер Айеорибе. Оптимизация защитных интервалов в сетях DVB-T2 на основе OFDM для снижения частоты битовой ошибки и улучшения городского покрытия

Системы DVB-T2, установленные в городских районах, существенно зависят от многолуче- вого распространения и межсимвольных помех. В статье рассмотрена возможность оптимизации настроек защитного интервала для систем DVB-T2 с поддержкой ортогонального частотного мультиплексирования для минимизации частоты битовых ошибок и повышения эффективности передачи сигнала в городских условиях. С помощью моделирования в MATLAB проанализированы четыре различных защитных интер- вала (1/4, 1/8, 1/16, 1/32) с учетом изменений в канале. Результаты показали, что оптимальная настройка защитного интервала составила 1/8, при которой значение частоты битовых ошибок уменьшилось с 10−3 до 10−5 при SNR = 18 дБ, а эффективность покрытия сигнала увеличилась на 22 %.

1. International Telecommunication Union Radiocommunication Sector (ITU-R), Frequency and Network Planning Aspects of DVB-T2. Report ITU-R BT.2254-5. Geneva, Switzerland, Nov. 2021. Available: https://www.itu.int/pub/R-REP-BT.2254 (Accessed 2 June 2026).

2. Ouyang R., Matsumura T., Mizutani K., Harada H. (2021b). Channel Measurement and Modeling Prototype for IEEE 802.22-Based Regional Area Networks. IEEE Access. 9, 144587–144599. https://doi.org/10.1109/access.2021.3117252.

3. Rowshan M., Qiu M., Xie Y., Gu X., Yuan J. (2024) Channel Coding Toward 6G: Technical Overview and Outlook. IEEE Open Journal of the Communications Society. 5, 2585–2685. https://doi.org/10.1109/ojcoms.2024.3390000.

4. Wasilewska M., Kliks A., Bogucka H., Cichon K., Ruseckas J., Molis G., et al. (2021) Artificial Intelligence for Radio Communication Context-Awareness. IEEE Access. 9, 144820–144856. https://doi.org/10.1109/access.2021.3119524.

5. Honfoga A.-C., Dossou M., Dassi P., Moeyaert V. (2021) Filtered Based UFMC Waveform Applied on Joint DVB-T2/NUC System. AFRICOMM. https://doi.org/10.1007/978-3-030-70572-5_2.

6. Aragon-Zavala A., Angueira P., Montalban J., Vargas-Rosales C. (2021) Radio Propagation in Terrestrial Broadcasting Television Systems: A Comprehensive survey. IEEE Access. 9, 34789–34817. https://doi.org/10.1109/access.2021.3061034.

7. Thenua R. K., Sourour E., Starks D., Kamran R., Simon M., Appaiah K. (2026) Bootstrap-Based Receiver Synchronization and System Discovery in B2X: An Extension of ATSC 3.0. ArXiv.org. https://arxiv.org/abs/2605.09298.

8. Zakaria M. N., Hadiwiyatno H., Anugerah M. D. (2025) Analysis of Digital Television Signal System Based on Gain and Information in Malang City Area. Jurnal Jartel Jurnal Jaringan Telekomunikasi. 15 (1), 81–88. https://doi.org/10.33795/jartel.v15i1.6962.

9. Erunkulu O. O., Zungeru A. M., Lebekwe C. K., Mosalaosi M., Chuma J. M. (2021) 5G Mobile Communication Applications: A Survey and Comparison of Use Cases. IEEE Access. 9, 97251–97295. https://doi.org/10.1109/access.2021.3093213.

10. Pamungkas W., Fitrian A., Larasati S., Jayati A. E., Ardina E. N., Hendry J. (2024) Multimedia Transmission Technique for Smart Ambulance with Multi-Carrier OFDM in a V2V and V2I Channel Model Using Software Defined Radio Technology. Journal of Applied Engineering and Technological Science. 6 (1), 316–340. https://doi.org/10.37385/jaets.v6i1.5030.

11. Azari M. M., Solanki S., Chatzinotas S., Kodheli O., Sallouha H., Colpaert A., et al. (2022) Evolution of Non-Terrestrial Networks from 5G to 6G: A Survey. IEEE Communications Surveys & Tutorials. 24 (4), 2633–2672. https://doi.org/10.1109/comst.2022.3199901.

12. Wang J., Hao Y., Yang C. (2023) The Current Progress and Future Prospects of Path Loss Model for Terrestrial Radio Propagation. Electronics. 12 (24). https://doi.org/10.3390/electronics12244959.

13. Celik A., Romdhane I., Kaddoum G., Eltawil A. M. (2022) A Top-Down Survey on Optical Wireless Communications for the Internet of Things. IEEE Communications Surveys & Tutorials. 25 (1), 1–45. https://doi.org/10.1109/comst.2022.3220504.

14. Singya P. K., Shaik P., Kumar N., Bhatia V., Alouini M. (2021) A Survey on Higher-Order QAM Constellations: Technical Challenges, Recent Advances, and Future Trends. IEEE Open Journal of the Communications Society. 2, 617–655. https://doi.org/10.1109/ojcoms.2021.3067384.

15. Ahmed-Ade F., Akpan V. A., Ogolo E. O. (2026) Real-Time Implementation of Integrated Optical Plus Filtered OFDM 5G Network Parameters for LTE and DVB-T2 Telecommunication Systems. Scientific Journal of Engineering Research. 2 (1), 97–130. https://doi.org/10.64539/sjer.v2i1.2026.372.

16. Georlette V., Honfoga A., Dossou M., Moeyaert V. (2024) Exploring Universal Filtered Multi Carrier Waveform for Last Meter Connectivity in 6G: A Street-Lighting-Driven Approach with Enhanced Simulator for IoT Application Dimensioning. Future Internet. 16 (4). https://doi.org/10.3390/fi16040112.

17. Kanellopoulos D., Sharma V. K., Panagiotakopoulos T., Kameas A. (2023). Networking Architectures and Protocols for IoT Applications in Smart Cities: Recent Developments and Perspectives. Electronics. 12 (11). https://doi.org/10.3390/electronics12112490.

18. Zannou S., Honfoga A., Dossou M., Moeyaert V. (2024) Carrier Frequency Offset Impact on Universal Filtered Multicarrier/Non-Uniform Constellations Performance: A Digital Video Broadcasting–Terrestrial, Second Generation Case Study. Telecom. 5 (4), 1205–1241. https://doi.org/10.3390/telecom5040061.

19. Averina L. I., Lafickiy A. Y. (2022) Increasing of Bit Error Rate Performance for OFDM Systems Over Fading Channels. Physics of Wave Processes and Radio Systems. 25 (4), 39–45. https://doi.org/10.18469/1810-3189.2022.25.4.39-45.

20. Koivunen V., Keskin M. F., Wymeersch H., Valkama M., González-Prelcic N. (2024b) Multicarrier ISAC: Advances in Waveform Design, Signal Processing, and Learning under Nonidealities. IEEE Signal Processing Magazine. 41 (5), 17–30. https://doi.org/10.1109/msp.2024.3420492.

21. D’Andreagiovanni F., Lakhlef H., Nardin A. (2020) A Matheuristic for Joint Optimal Power and Scheduling Assignment in DVB-T2 Networks. Algorithms. 13 (1). https://doi.org/10.3390/a13010027.