| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an optical transmission system for preventing noise addition on an up-link. <P>SOLUTION: In the optical transmission system including a plurality of slave stations 2 communicating with radio terminals 3 by radio and a base station 1 connected to the plurality of slave stations 2 by optical fibers, each slave station 2 includes an electrical/optical conversion part 22 which converts a received radio signal to an optical signal and transmits the optical signal to the base station 1, and the base station 1 includes an electrical/optical conversion part 19 for converting optical signals transmitted from the plurality of slave stations 2 to radio signals, a reception signal recognition part 18 for detecting reception levels of the radio signals, a switch part 17 receiving the radio signals and outputting the radio signals on the basis of the reception levels detected by the reception signal recognition part 18, and a synthesizing part 16 for synthesizing the radio signals output from the switch part 17. <P>COPYRIGHT: (C)2008,JPO&INPIT |
