Digital Video Broadcasting – Terrestrial

What Does Digital Video Broadcasting – Terrestrial Mean?

Digital Video Broadcasting – Terrestrial (DVB-T) is a standard set in 1997 and put into use in 1998 for the transmission of digital terrestrial television (DTT). DVB-T is able to transmit different kinds of data, including compressed digital information, digital audio, digital video, Moving Picture Experts Group (MPEG) and other data with codec modulation. DVB-T provides an advanced method of transmission compared to the previous analog transmission.

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Techopedia Explains Digital Video Broadcasting – Terrestrial

In the present age, television transmissions are broadcast from towers and then beamed to homes via receivers passing through satellites. This provides easy and reliable satellite-based transmission. But this is not the only method used for television broadcast.

Many countries have implemented DVB-T, which has reformed into many other standards such as DVB-H and DVB-T2.

The working mechanism of DVB-T involves the following:

  • Digital data is transmitted in discrete blocks at symbol rate.
  • DVB-T allows for the handling of multipath scenarios through the orthogonal-frequency-division-multiplexing technique.
  • Single-frequency network operation is also used by DVB-T, where two or more transmitters may carry the same data at the same frequency.

DVB-T has many features that play an active role in operational management. Some of these features include:

  • Splitter
  • External encoder
  • External interleaver
  • Internal encoder
  • Mapper
  • Frame adaption
  • Pilot and transmission parameters signals
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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…