Analysis of Adaptive Modulation and Coding Schemes in DVB-T2 Broadcasting Systems to Improve Signal Stability, Transmission Efficiency and Overall Quality of Service

The performance of adaptive modulation and coding in second-generation digital broadcasting systems (DVB-T2) is investigated in terms of the reliability of the transmitted signal, the efficiency of channel bandwidth utilization, and the quality of the supported service. The performance of quadrature phase-shift keying (QPSK) modulation schemes (16QAM, 64QAM, 256QAM) using low-density parity-check (LDPC) codes with rates of 1/2–9/10 is assessed in the context of their application to provide high-quality digital terrestrial television broadcasting based on adaptive modulation and coding methods. The simulation results yielded bit error char acteristics for various modulation schemes using LDPC codes at different rates in channels with additive white Gaussian noise and multipath fading simultaneously. It was found that simpler modulation schemes, such as 1/2 rate QPSK, can provide a bit error rate of less than 10^–5 at a signal-to-noise ratio of 5 dB, while more complex ones, such as 9/10 rate 256QAM, require a signal-to-noise ratio of 25 dB to provide a bit error rate of less than 10^–6. An improvement in channel throughput was noted from 1.0 bps/Hz for QPSK modulation to 6.7 bps/Hz for 256QAM under high signal-to-noise ratio conditions.

1. ETSI EN 302 755 v.1.4.1 (2015-02) Digital Video Broadcasting. Frame Structure Channel Coding and Modulation for a Second Generation Digital Terrestrial Television Broadcasting System (DVB-T2).

2. Kodheli O., Lagunas E., Maturo N., Sharma Sh. K., Shankar B., Montoya J. F. M., et al. (2021) Satellite Communications in the New Space Era: A Survey and Future Challenges. IEEE Communications Surveys & Tutorials. 23 (1), 70–109. https://doi.org/10.1109/COMST.2020.3028247.

3. Porambage P., Gür G., Osorio D. P. M., Liyanage M., Gurtov A., Ylianttila M., et al. (2021) The Roadmap to 6G Security and Privacy. IEEE Open Journal of the Communications Society. 2, 1094–1122. https://doi.org/10.1109/OJCOMS.2021.3078081.

4. Grenier A., Lohan E. S., Ometov A., Nurmi J. (2023) A Survey on LOW-POWER GNSS. IEEE Communications Surveys & Tutorials. 25 (3), 1482–1509. https://doi.org/10.1109/COMST.2023.3265841.

5. Wu H., Ferlin S., Caso G., Alay Ц., Brunstrom A. (2021) A Survey on Multipath Transport Protocols Towards 5G Access Traffic Steering, Switching and Splitting. IEEE Access. 9, 164417–164439. https://doi.org/10.1109/ACCESS.2021.3134261.

6. Jasim M. A., Shakhatreh H., Siasi N., Sawalmeh A. H., Aldalbahi A., Al-Fuqaha A. (2021) A Survey on Spectrum Management for Unmanned Aerial Vehicles (UAVs). IEEE Access. 10, 11443–11499. https://doi.org/10.1109/ACCESS.2021.3138048.

7. Liu F., Cui Y., Masouros C., Xu J., Han T. X., Eldar Y. C., et al. (2022) Integrated Sensing and Communications: Toward Dual-Functional Wireless Networks for 6G and Beyond. IEEE Journal on Selected Areas in Communications. 40 (6), 1728–1767. https://doi.org/10.1109/JSAC.2022.3156632.

8. Abdallah B., Khriji S., Chéour R., Lahoud Ch., Moessner K., Kanoun O. (2024) Improving the Reliability of Long-Range Communication Against Interference for Non-Line-of-Sight Conditions in Industrial Internet of Things Applications. Applied Sciences. 14 (2), 868. https://doi.org/10.3390/app14020868.

9. Singya P. K., Shaik P., Kumar N., Bhatia V., Alouini M.-S. (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.

10. Zhang S., Yu G., Yu S., Zhang Y., Zhang Y. (2022) Weather-Conscious Adaptive Modulation and Coding Scheme for Satellite-Related Ubiquitous Networking and Computing. Electronics. 11 (9). https://doi.org/10.3390/electronics11091297.

11. Bejarano J. M. R. (2021) Contribución a la Mejora de la QOS y Eficiencia en Sistemas de Comunicación Por Satélite Interactivos de Banda Ancha. PhD Thesis, Universidad Politйcnica de Madrid.

12. Tarigan N. Y., Pamungkas W., Isnawati A. F. (2024) Performance of DVB-T2 Application in High-Speed Train Transportation System. Engineering, Technology & Applied Science Research. 14 (5), 17084–17090. https://doi.org/10.48084/ETASR.8247.

13. Wang Z., Lu F., Wang D., Zhang X., Jionghui Li, Jindong Li (2022) A Transmission Efficiency Evaluation Method of Adaptive Coding Modulation for Ka-Band Data-Transmission of LEO EO Satellites. Sensors. 22 (14). https://doi.org/10.3390/s22145423.

14. Brunnstrӧm K., Djupsjӧbacka A., Billingham J., Wistel K., Andrén B., Ozolins O., et al. (2024) Video Expert Assessment of High Quality Video for Video Assistant Referee (VAR): A Comparative Study. Multimedia Tools and Applications. 83, 58783–58825. https://doi.org/10.1007/s11042-023-17741-4.