| 摘要 |
A method and an apparatus for transmitting an optical signal in an optical CDMA system. The system comprises transceivers (101 to 104) capable of sending and receiving optical signal sent and received through an optical fibre network. The optical signal is generated in a transmitter (100) where a digital data signal is at first pulse position modulated as a data symbol. Frequency hopping coding is conducted for the data symbol, and thereafter the data symbol is sent to a receiver (106) where the frequency hopping decoding and PPM demodulation are conducted.
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