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Ministry of Transportation, Information Technology and Communications. Retrieved 26 June Although the systems are labelled 2k and 8k the actual numbers of carriers used are carriers for the 2k service and carriers for the 8k service. Archived from the original on 16 April Three figures of bandwidth are available. DVB-T makes use of many modern technologies to enable it to deliver high quality video in a broadcast environment. Using this technique, two completely separate data streams can be modulated onto a single DVB-T signal.

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Within a geographical area, DVB-T also allows single-frequency network SFN operation, where two or more transmitters carrying the same data operate on the same frequency.

The rate at which this is done affects the rate at which the data can be transmitted. The length of the Guard Interval can be chosen.

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Retrieved 26 June DVB-T is an abbreviation for ” Digital Video Broadcasting — Terrestrial “; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in [1] and first broadcast in the UK in In order to correct these errors various forms of error correction are used.

Many countries, including the UK are moving towards dvb-g complete switch-over from analogue to digital, with a resultant digital dividend releasing a significant amount of bandwidth for other services. The refresh rate for the a screen can be varied. DVB-T makes use of many modern technologies to enable it to deliver high quality video in a broadcast environment. Many countries that have adopted DVB-T have published standards for their implementation.


Coaxial cable Fiber-optic communication Optical fiber Free-space optical communication Molecular communication Radio waves Transmission line.

DVB-T – Wikipedia

The higher the level of error correction that is applied, the greater the level of supporting error correction data that needs to be transmitted. It provides many facilities and enables a far more efficient use of the available radio frequency spectrum than the previous analogue transmissions.

Retrieved 1 April In such cases the signals from each transmitter in the SFN needs to be accurately time-aligned, which is done by sync information in the stream and timing at each transmitter referenced to GPS. Orthogonal Frequency Division Conexanr, OFDM is a form of signal format evb-t uses a large number of close spaced carriers that are each modulated with low rate data stream.

See Digital terrestrial television France. There is a balance between the amount rate at which data can be transmitted and the signal to noise ratio that can be tolerated. By using this site, you agree to the Terms of Use and Privacy Policy. Byit was the standard that was adopted in more than 35 countries and over 60 million receivers deployed and in use. According to the transmission requirements the number of carriers within the OFDM signal can be varied.


In other projects Wikimedia Commons. Wireless video and data distribution methods. Archived from the original on 16 April It is also the format widely used worldwide including North America for Electronic News Gathering for transmission of video and audio from a mobile newsgathering vehicle to a central receive point.

Archived from the original on 30 November Using this technique, two completely separate data streams can be modulated onto a single DVB-T signal.

When fewer carriers are used, each carrier must carry a higher bandwidth for the same overall multiplex data rate. Three figures of bandwidth are available.

Using this principle DVB-T broadcasters are able to target two different types of receiver with two completely different services. Traditionally for analogue televisions this was linked to the frequency used for the local mains supplies.

What is DVB-T: Digital Video Broadcasting

DVB-T is now well established. Examples include the UK’s Freeview. Supplier Directory For everything from distribution to test equipment, components and more, our directory covers it.