PASSIVE OPTICAL NETWORK OF CDMA METHOD USING MULTI-CARRIER, CAPABLE OF TRANSMITTING VOLUMINOUS DATA BY USING THE CDMA METHOD AS UPSTREAM TRANSMISSION METHOD

摘要

PURPOSE: A passive optical network of a CDMA method using a multi-carrier is provided to transmit data without a complicated MAC protocol by using the CDMA method as an upstream transmission method. CONSTITUTION: A passive optical network of a CDMA method using a multi-carrier includes a plurality of ONU(Optical Network Unit)/ONTs(Optical Network Terminals), an OLT(Optical Line Terminal), and an optical coupler. The ONU/ONTs(21) use a CDMA method for transmitting data to the OLT and use an Ethernet method for receiving data from the OLT. The OLT is used for receiving the data of the CDMA method from the ONU/ONTs and transmitting the data of the Ethernet method to the ONU/ONTs. The optical coupler(25) is used for coupling optical signals of the CDMA method, transmitting the coupled signals to the OLT and distributing optical signals of the Ethernet method to the ONU/ONTs.