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 (though many broadcasters still use plain DVB-T for this purpose).
It is currently broadcasting in the United Kingdom (Freeview HD, four channels, plus an extra multiplex in Northern Ireland carrying 3 SD channels), Italy (Europa 7 HD, twelve channels), Finland (21 channels, 5 in HD), Sweden (five channels), Serbia (10 SD and HD version of the public broadcaster’s channel RTS), Ukraine (32 SD and HD channels in four nationwide multiplexes), Denmark and some other countries.
Read more about DVB-T2: The Standard, System Differences With DVB-T, Technical Details, Market Adoption