Bridging the Information Gap: How Dvb-T2 Expands Affordable Access to Trusted News, Emergency Alerts, and Essential Public Information in Underserved Communities Worldwide

Abstract

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

Access to timely and trustworthy information remains uneven worldwide, especially in rural and low-income communities where broadband coverage and affordability are limited. The International Telecommunication Union (ITU) reports that about 2.6 billion people were still offline in 2023, with the majority living in developing regions. This persistent digital divide worsens information inequality, limits civic participation, and increases disaster vulnerability. Digital Video Broadcasting–Second Generation Terrestrial (DVB-T2) provides a scientifically grounded solution for expanding public information access because it delivers wide-area coverage with high spectral efficiency and strong signal robustness. DVB-T2 introduces advanced transmission techniques, including OFDM, LDPC/BCH forward error correction, and higher-order modulation options (e.g., 256-QAM), enabling improved performance in multipath and low signal-to-noise conditions. Compared with first-generation DVB-T, DVB-T2 can provide up to ~50% higher capacity under comparable bandwidth conditions, allowing broadcasters to transmit more services (news, education, and emergency alerts) within the same spectrum. In an 8 MHz terrestrial channel, DVB-T2 can support typical payload capacities in the range of ~30–40+ Mbit/s depending on network configuration, improving the feasibility of multiple HD channels, regional feeds, and data broadcasting. For underserved communities, these technical gains translate into practical outcomes: free-to- air access reduces reliance on subscription television and mobile data, while enhanced reception supports coverage in mountainous or sparsely populated areas where cellular networks are weak. DVB-T2 networks can also strengthen public safety communication by supporting national early warning systems, enabling rapid dissemination of emergency warnings and instructions to large populations simultaneously—an advantage over congestion-prone mobile networks during crises. This paper evaluates DVB-T2 as a public communication infrastructure that supports development goals through multilingual news access, public health messaging, educational broadcasting, and civic information delivery. While DVB-T2 deployment requires capital investment in transmitters, spectrum planning, and receiver availability, evidence-based capacity and coverage advantages make it a cost-effective pathway to reduce information inequality. The study recommends hybrid strategies that combine DVB-T2 broadcasting with internet-based services to maximize resilience, reach, and long-term sustainability.

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