| 摘要 |
PURPOSE: An emergency disaster mobile communication system is provided to simply configure equipment according to amplification without converting a frequency of a wireless signal transceived to a base station. CONSTITUTION: An optical signal receiver (170) receives a laser beam from an adjacent laser relay through a predetermined receiving lens. The optical signal receiver generates a high frequency signal corresponding to the received laser beam. A band pass filter (180) detects a high frequency signal of a desired frequency band through the optical signal receiver. A power amplifier (190) amplifies a signal outputted from a second low noise amplifier. The power amplifier outputs the amplified signal to a transmission channel of a duplexer. [Reference numerals] (120) Duplexer; (140) Laser drive unit; (145) Laser diode; (150) Transmitting lens; (160) Receiving lens; (170) Optical signal receiver
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