FIELD: information technology.
SUBSTANCE: pilot synchronisation symbol, which has known characteristics, is included as a first symbol in digital broadcast frames. The pilot symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. In another aspect of the invention, at least two pilot symbols may be defined and used at the beginning of each frame. The at least two pilot symbols P1 and P2 may enable fast channel search and service detection within the frame. Signalling may be realised as a combination of L1 and L2 signalling.
EFFECT: providing service and channel detection in digital broadcast network.
27 cl, 20 dwg, 2 tbl
