DVB-T2 is an abbreviation for Digital Video Broadcasting – Second Generation Terrestrial; it is the extension of the television standard DVB-T, issued by the consortium DVB, devised for the broadcast transmission of digital terrestrial television.This system transmits compressed digital audio, video, and other data in “physical layer pipes” (PLPs), using OFDM modulation with concatenated channel coding and interleaving. The higher offered bit rate, with respect to its predecessor DVB-T, makes it a suited system for carrying HDTV signals on the terrestrial TV channel.It is currently broadcasting in UK (Freeview HD, four channels), Italy (Europa 7 HD, twelve channels) and in Sweden (five channels).
Differences between DVB-T and DVB T2
The following table reports a comparison of available modes in DVB-T and DVB-T2
For instance, a UK MFN DVB-T profile (64-QAM, 2k mode, coding rate 2/3, guard interval 1/32) and a DVB-T2 equivalent (256-QAM, 32k, coding rate 3/5, guard interval 1/128) allows for an increase in bit rate from 24.13 Mbit/s to 35.4 Mbit/s (+46.5%). Another example, for an Italian SFN DVB-T profile (64-QAM, 8k, coding rate 2/3, guard interval 1/4) and a DVB-T2 equivalent (256-QAM, 32k, coding rate 3/5, guard interval 1/16), achieves an increase in bit rate from 19.91 Mbit/s to 33.3 Mbit/s (+67%
When the digital terrestrial HDTV service Freeview HD was launched in December 2009, it was the first DVB-T2 service intended for the general public. As of November 2010, DVB-T2 broadcasts were available in a couple of European countries.
Countries where DVB-T2 is in use
The earliest introductions of T2 have usually been tied with a launch of high-definition television. There are some countries where HDTV is broadcast using the old DVB-T standard with no immediate plans to switch those broadcasts to DVB-T2. Among countries using DVB-T for nationwide broadcasts of HDTV are France, Italy, Norway and Denmark.
Countries where DVB-T2 is in use include:
* United Kingdom: one multiplex, soft launch in December 2009, full launch in April 2010
* Italy: one multiplex, soft launch in October 2010
* Sweden: two multiplexes, full launch in November 2010
* Finland: five multiplexes, soft launch in January 2011, full launch in February 2011
* Ukraine: four multiplexes, soft launch in September 2011, full launch in November 2011
The Southern African Development Community announced in November 2010 that DVB-T2 would be the preferred standard for the region. In Serbia, both SD and HD broadcasts will air in DVB-T2It has been trialled in Spainand Germany. Austria and New Zealand have succeeded copies DVB T2 standard.
Besides, Currently Malaysia, which has yet to officially launch it’s DVB-T transmission, is running tests on DVB-T2. Whether the system will be adopted only for HD channels or will replace it’s existing trial DVB-T system, if adopted at all, remains unannounced.
Freeview HD started its “technical launch” on December 2, 2009, hosting BBC HD, and ITV1 HD. On March 30, 2010, Freeview HD had its official launch, and added Channel 4 HD to its broadcasts. The fourth channel hosted is BBC One HD, while as of March 2010 the remaining fifth slot is still to be assigned.Now Freeview covers 77% of UK population and plans to finally reach 98.5% in 2012, following the region by region digital switchover all over the country
In Italy, Europa 7, after a ten years long legal battle, has finally been an assigned in Spring 2010 a national multiplex (the slot corresponging to one channel in analog broadcasting and to many channels in digital broadcasting), and decided to use it in DVB-T2, rebranding itself as Europa 7 HD. Europa 7 HD, having a full multiplex for itself, will host twelve alternating channels, of which eight in HD.
Europa 7 HD is the first Italian broadcaster to adopt the DVB-T2 technology and is doing so as an unilateral initialive, as there is not a general plan in Italy to adopt DVB-T2 for the other broadcasters. The two dominating broadcasters Rai (public) and Mediaset (private) still use DVB-T for their HDTV channels. Rai has planned some tests with DVB-T2, but has not a short-term plan for the general public to switch to DVB-T2, and the country is not yet fully switched from analog to DVB-T. Europa7 HD owner Francesco Di Stefano declared that all broadcasters will eventually have to move from T1 to T2, because of the higher quality.
On June 17, 2010, the Swedish Radio and TV Authority and the Swedish Government granted a total of nine licenses to broadcast channels in HDTV spread over two multiplexes using DVB-T2.
Broadcasts started on November 1, 2010, with five channels available initially: SVT1 HD, SVT2 HD, MTVN HD, National Geographic HD and Canal+ Sport HD. From this date a coverage of 70% of the population is achieved, with 90% expected by mid 2011 and nationwide coverage by 2012.
DVB T2 PCIe TV card
TBS 6220 PCI-E DVB-T2/T TV Tuner Card is a digital terrestrial tuner card, which allows you watch free-to-air digital Terrestrial TV and digital Stereo radio on PC. t’s ideal for watching UK Freeview SD and HD channels on your PC.TBS 6220 can be used as a digital video recorder for recording digital terrestrial TV programs with full HDTV support. It also enables you to pause a live broadcast and continue from where you left with the Time-shifting function. It would be a good way to watch DVB T/T2 channels（especially Freeview HD in UK.