Enhancing DVB-T2 Transmission Efficiency and Signal Robustness Through Adaptive Coding and Modulation for Reliable Digital Broadcasting Integration in Modern Architectural Engineering and Built Environments

Abstract

Olarewaju Peter Ayeoribe, Olaitan Akinsanmi, Adebimpe O. Esan, Bolaji A. Omodunbi, Iyiola V. Ayeoribe, Atinuola Elizabeth Ayeoribe and Ayodele S. Oluwole

The increasing demand for high-quality digital broadcasting within modern architectural engineering and built environments necessitates transmission systems that deliver high efficiency, robustness, and reliability despite complex structural interference. This study investigates the enhancement of DVB-T2 transmission performance through Adaptive Coding and Modulation (ACM), focusing on its ability to optimize throughput and maintain signal integrity in dense urban and indoor architectural settings. DVB-T2’s baseline transmission efficiency of 30–50% higher spectral capacity compared to DVB-T is further improved using dynamic ACM techniques that adjust constellation order, code rate, and Guard Interval (GI) based on real-time channel conditions. Experimental simulations were conducted using 16-QAM, 64-QAM, and 256-QAM under Rayleigh and Rician fading typical of reinforced concrete, steel-frame, and high-glazing environments. Results show that implementing ACM enables up to 18.6% improvement in spectral efficiency and 27% reduction in Bit Error Rate (BER) at SNR levels between 12 dB and 22 dB, compared to fixed-modulation DVB-T2. For 256-QAM at 20 dB SNR, BER dropped from 3.2 × 10−3 to 7.4 × 10−4, while throughput increased from 38.5 Mbps to 46.1 Mbps. Additionally, incorporating Low-Density Parity Check (LDPC) with BCH coding sustained transmission robustness even under 25–40% building penetration loss, which is typical in concrete-dense architectural zones. The study demonstrates that adaptive modulation strategies significantly enhance broadcast reliability for integrated smart-building systems, indoor digital signage, emergency communication networks, and IoT-enabled infrastructures. By aligning digital broadcasting technologies with architectural engineering requirements, the findings support more resilient communication frameworks for sustainable, technology-driven built environments. The research concludes that ACM-enhanced DVB-T2 provides an effective pathway for future-ready architectural spaces demanding high-performance, interference-tolerant digital broadcasting.

PDF