Rather than carrying one data carrier on a single radio frequency RF channel, COFDM works by splitting the digital data stream into a large number of slower digital streams, each of which digitally modulates a set of closely spaced adjacent sub-carrier frequencies. It is a trade-off between data rate and SFN capability. The demultiplexing is defined by the mapping algorithm. Bit interleaving is performed only on the useful data. For more general information, see User Manual:

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Digital Video Broadcasting for Terrestrial Systems DVB-T

It is possible to operate SFNs which do not fulfill the guard interval condition if the self-interference is properly planned and monitored. Retrieved from ” https: Many countries that have adopted DVB-T have published standards terresttrial their implementation.

The individual packet length becomes bytes. Official simulcast started in Marchfull switch has been done on 30 September However, many countries are switching these days to digital broadcasting and fully abandoning analogue TV broadcasting.

Archived from the original on 16 April The demultiplexing is defined by the mapping algorithm. Retrieved 22 March The symbol duration T S consists of two parts: Coaxial cable Fiber-optic communication Optical fiber Free-space optical communication Molecular communication Radio waves Transmission line. The official terrestrial broadcasting standard in Terrestroal is DVB-T2and implementations started in DVB-T as a digital transmission delivers data in a series of discrete blocks at the symbol rate.



Each symbol contains carriers in the 2K mode and carriers in the 8K mode. 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 The guard interval contains a cyclic continuation of the useful part and is inserted before it.

Archived from the original on 30 November Then the modified packets go through a convolutional interleaver with depth 12 and a convolutional error correction coder. The transmitted signal is organized in frames. The insertion pattern depends on the particular frame number.

DVB-T – Wikipedia

The sequence of OFDM symbols are shifted in frequency to the desired channel band and transmitted. The block size is the same for each interleaver, but the interleaving sequence is different in each case. For General Setup, see User Manual: So, if tuned to a specific frequency, it is possible to receive more than 1 channel on this specific frequency.


Space-division Frequency-division Time-division Polarization-division Orbital angular-momentum Code-division. Next, inner interleaving is applied.

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Digital Video Broadcasting for Terrestrial Systems DVB-T

Wireless video and data distribution methods. This may vary with region- try searching this wiki, or checking [external links] for region specific information. Additional information is inserted into data frames as scattered pilot cells, continual pilot carriers, or Transmission Parameter Signalling TPS carriers.

The length of the Guard Interval can be chosen.

The inner interleaving terreztrial of bit-wise interleaving followed by symbol interleaving. By using this site, you agree to the Terms of Use and Privacy Policy.

First that sequence is scrambled for energy dispersion and packet synchronisation is modified.