| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio relay system capable of facilitating maintenance by simplifying structure of a relay device, by which enhancement of reliability of the system in accordance with facilitation of the maintenance is expected and capable of further reducing power consumption of the entire system. <P>SOLUTION: In an optical fiber transmission line 3 by which one core bi-directional communication is executed by synthesizing/separating optical signals in an upward communicating direction and a downward communicating direction with a mobile station 4, a base station 1 connected with the respective relay devices 2 in one-to-one relation is provided with an optical demultiplexing synthesizer 9 for synthesizing and separating a communication signal to the respective optical fiber transmission lines 3 and an optical delay compensation device 10 for executing delay compensation of the optical signal resulting from path length of the respective optical fiber transmission lines 3. As a result, the power consumption of the entire system is reduced, scale increase is suppressed and in addition, power feed from the base station is executed by simpler equipment since structure for which power feed is required in the relay device is omitted and the radio relay system is more easily constituted. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
