DVB-T: A solution for digital terrestrial television

摘要

Digital terrestrial television broadcasting is already a reality in many European countries and around the world. The terrestrial digital video broadcasting (DVB-T) standard is gaining ground as an approved solution for digital terrestrial television broadcasting. In countries where terrestrial television is still dominant, application of DVB-T is expected to provide more channels and increase choice for the consumers. In other countries where there is a much higher penetration of cable and satellite and less reliance on terrestrial broadcasting, DVB-T is expected to offer mobile reception of video, Internet and multimedia data. This could bring new features to broadcast networks, making applications and services accessible and usable by anyone, anywhere, anytime, for business or personal use. The DVB-T specification was completed in 1996, following an in-depth system evaluation in the Task Force on System Comparison ― an entity of the DVB Technical Module. It was based on research and development within the European "RACE project 2082 dTTb" (digital terrestrial television broadcasting) and other national and international projects that were associated with dTTb. Before DVB-T could be turned from a paper specification into a system, broadcasters, network operators and manufacturers had to evaluate its performance. This triggered a long process of validation carried out through field trials and tests in pilot networks and, later, in regular networks.