DVBTDVBT2

DVB-T and DVB-T2 are digital terrestrial television broadcasting standards developed by the DV B Project. DVB-T is the original standard for delivering digital TV over terrestrial networks, while DVB-T2 is its successor, designed to increase capacity and improve performance within the same spectrum.

DVB-T uses orthogonal frequency-division multiplexing (COFDM) with modulation options such as QPSK, 16-QAM, and 64-QAM. It employs forward error correction and multiprogram multiplexing to carry multiple channels and data services. The standard was designed to support mobile and portable reception, as well as reception in areas with multipath interference. It has been widely deployed in many regions as part of digital switchover programs.

DVB-T2 introduces higher spectral efficiency and improved robustness. It uses more advanced COFDM modes and signal processing, enabling higher data rates and better reception in challenging conditions. DVB-T2 supports features that facilitate network planning, such as single-frequency networks (SFN) and more flexible transmission parameters. When paired with modern video codecs, DVB-T2 can deliver high-definition and ultra-high-definition services within the same bandwidth that DVB-T occupied.

Deployment and migration vary by country. In many regions, DVB-T2 has become the predominant standard for new terrestrial broadcasts, while DVB-T remains in use in areas that have not fully migrated or maintain legacy services. Consumer equipment often supports both standards, enabling backward compatibility in mixed environments. The transition generally involves updated transmitters and new receivers, with older sets able to receive DVB-T services where multiplexes are still broadcast.