| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical transmission system for mobile communication with a new configuration that compensates disadvantages of a star type configuration and a multi-branch type configuration. SOLUTION: A radio modulator-demodulator 3 applying modulation demodulation processing to a line network frequency electric signal and a radio frequency electric signal is connected to a line network 1 via an electric signal transmission cable 2, a central station 5 that converts the radio frequency electric signal into an optical signal and vice versa is connected to a relay transmission station 11 that distributes and synthesizes the optical signals via outgoing and incoming optical fiber cables 10a, 10b, a plurality of terminal stations 7 that conducts radio communication with a mobile communication unit 8 and converts the electric signal into the optical signal and vice versa are connected to the relay transmission station 11 via outgoing and incoming optical fiber cables 12a, 12b. The central station 5 and the relay transmission station 11 are connected a few numbers of optical fiber cables and the relay transmission station 11 and a plurality of the terminal stations 7 are connected respectively by optical fiber cables to provide independence. |
