ABSTRACT
In the preceding chapter, we explained why compression was an absolute must in order to be able to broadcast TV pictures in a channel of acceptable width. A spectrum bandwidth comparable to conventional analog broadcasts (6-8MHz for cable or terrestrial broadcasts, 27-36MHz for satellite) implies in practice maximum bit-rates of the order of 30-40Mb/s, with the necessary error correction algorithms and modulation schemes, which are explained in Chapters 6 and 7.
