APPARATUS AND METHOD FOR DATA TRANSMISSION USE THE SPREADING SIGNAL IN DIGITAL BROADCASTING SYSTEM

摘要

PURPOSE: Device and method transmitting supplementary data using spread spectrum are provided to add data to a broadcasting signal for distress broadcasting and additional service without additional channel allocation using spread spectrum. CONSTITUTION: A service data generation unit (110) generates each transmission header of service packets and generates service data including the transmission header and service packet. A transmission data generation unit (120) performs channel coding and spread spectrum of the service data. The transmission data generation unit generates transmission data by inserting a predetermined synchronization code into the spread spectrum data. A modulation unit (131) modulates the transmission data. A signal synthesis unit (133) synthesizes the modulated transmission data to a broadcasting signal. [Reference numerals] (111) Metadata generation unit; (112) Service packet generation unit; (113) Transfer header generation unit; (114) Multiplex unit; (121) First channel coding unit; (122) Interleaving unit; (123) First band spread unit; (124) Second channel coding unit; (125) Second band spread unit; (126) Synchronized spread cod insertion unit; (127) Frame generation unit; (131) Modulation unit; (132) Power control unit; (133) Signal synthesis unit; (140) T-DMB transfer unit; (AA) Message