| 摘要 |
PROBLEM TO BE SOLVED: To rationalize a radio relay amplifier when a plurality of operation subject to which mutually different transmission/reception frequency bands in mobile communication are allocated share one blind zone. SOLUTION: The radio relay amplifier receives and amplifies all radio waves from base stations 34 and 35 arranged by the plurality of operation subjects, branches (42) them into the number of the operation subjects, individually selectively amplifies (43-44) them for the respective operation subjects, then synthesizes and amplifies them and sends them out to the mobile equipment 56 and 57 of the respective operation subjects. Selective amplification is similarly performed for the respective operation subjects for incoming channels from mobile stations 56 and 57 as well. |
