DVB-T2 is the world’s most advanced digital terrestrial transmission (DTT) system offering higher efficiency, robustness and flexibility. It introduces the latest modulation and coding techniques to enable highly efficient use of valuable terrestrial spectrum for the delivery of audio, video and data services to fixed, portable and mobile devices. These new techniques make DVB-T2 30% more efficient than any other DTT system in the world.

As with its predecessor, DVB-T2 uses OFDM (orthogonal frequency division multiplex) modulation with a large number of sub-carriers delivering a robust signal. Just like DVB-T, DVB-T2 also offers a range of different modes, making it a very flexible standard. DVB-T2 uses the same error correction coding as in DVB-S2 and DVB-C2: LDPC (Low Density Parity Check) coding combined with BCH (Bose-Chaudhuri-Hocquengham) coding offers a very robust signal. Several options are available in areas such as the number of carriers, guard interval sizes and pilot signals, so that the overheads can be optimized for any target transmission channel. The key new DVB-T2 technologies are:

·Rotated Constellations provide significant additional robustness in difficult channels.

·Multiple Physical Layer Pipes allow separate adjustment of the robustness of each delivered service within a channel to meet the required reception conditions (e.g. in-door or roof-top antenna). It also allows transmissions to be tailored such that a receiver can save power by decoding only a single service rather than the whole multiplex of services.

·Extended interleaving, including bit, cell, time and frequency interleaving.

·Future Extension Frames allow the standard to be compatibly enhanced in the future.

This solution describes the infrastructure and configurations of DVB-T2 system and introduces DVB-T2 in general, suitable for the broadcasting systems transmitting video, audio and data, and so on by terrestrial wireless networks.