INTERLEAVE SYNCHRONIZING CIRCUIT

摘要

PURPOSE:To synchronize an interleave frame and to remove phase indefinition by extracting only an information bit on the reception side, deciding one absolute phase from plural pulled-in phases and synchronizing the interleave frame. CONSTITUTION:A received signal with the phase indefinition is fetched into a demapping means and the information bit corresponding to a pulse for interleave frame synchronization is extracted and equivalently converted to the plural pulled-in phases by an interleave frame synchronization establishing means. Then, an interleave frame synchronizing phase is searched in each phase. In such a case, since the interleave synchronizing frame is discovered in only one absolute phase is the respective pulled-in phases, the interleave frame synchronization is established and the phase indefinition can be removed by detecting the absolute phase.