Published Online:February 2026
Product Name:The IUP Journal of Telecommunications
Product Type:Article
Product Code:IJTC020226
DOI:10.71329/IUPJTC/2026.18.2.37-61
Author Name:Olarewaju Peter Ayeoribe
Availability:YES
Subject/Domain:Engineering
Download Format:PDF
Pages:37-61
The paper addresses the suboptimal usage of Digital Video Broadcasting-Second Generation Terrestrial (DVB-T2) network parameters and their settings to achieve maximum efficiency in spectrum usage and improve the Quality of Service (QoS). A framework for improving spectrum efficiency in DVB-T2 terrestrial broadcasting systems is presented through the application of adaptive modulation and coding (AMC) schemes and advanced signal processing techniques. The performance of the proposed framework is validated through the analysis of key performance indicators such as bit error rate (BER), signal-to-noise ratio (SNR) and spectrum efficiency in terms of bits/s/Hz. The scientific data show that 256-QAM schemes at SNR values of 24-28 dB achieve spectrum efficiency of up to 7.5 bits/s/Hz while maintaining BER below 10-6 at low-density parity-check coding rates of 3/5 to 5/6. On the other hand, 16-QAM schemes at SNR values of 12-15 dB achieve spectrum efficiency between 2.5 and 3.5 bits/s/Hz. It is evident that the efficiency of spectrum usage is improved by at least 30% compared to conventional fixed parameter settings, while ensuring the reliability of the DVB-T2 network in multipath and interference-prone environments.
The rapid growth in digital multimedia consumption driven by high-definition (HD), ultra-high-definition (UHD) and mobile broadcasting services has significantly increased the demand for efficient utilization of the limited radio frequency spectrum. Digital Video Broadcasting-Second Generation Terrestrial (DVB-T2) has emerged as a key enabling technology for terrestrial broadcasting, offering substantial improvements in spectral efficiency, robustness, and system capacity compared to its predecessor, DVB-T.