In 2002, ITU published its first Handbook on digital terrestrial television under the title Digital terrestrial television broadcasting in the VHF/UHF bands as guidance to engineers responsible for the implementation of digital terrestrial television broadcasting (DTTB). In this Handbook, new digital broadcasting technologies were explained in detail, for example a splendid description of the Discrete Cosine Transform (DCT) coding that is the basis of all past and present TV compression systems, as well as a very instructive chapter on signal power summation.