| 摘要 |
A system for integrating broadcast and communication performs a connection between an optical-network unit (ONU) and a user, an optical-line terminal (OLT) and the ONU, and processes a broadcast signal on the basis of time division multiplexing such that the quality of a broadcast service is ensured. The OLT receives digital-broadcast signals and communication signals, electro-optically converts them, combines, and transmits the signals on the basis of optical wavelength-division multiplexing. The ONU separates the signal transmitted from the OLT into broadcast and communication signal, processes upstream information transmitted from a user, and transmits the broadcast and communication signal selected on a user-by-user basis, on the basis of a time slot. A user gateway converts opto-electrically a time slot-based signal, separates it into individual signals, distributes it on a service-by-service basis, and transmits the upstream information from user to ONU. |
