| 摘要 |
PURPOSE: A noise reduction system and a supplying method thereof applied to a mobile communication relay in a wireless mode are provided to reduce unnecessary noise transferred to a base station from a relay. CONSTITUTION: A sensor(110) is installed between a first antenna and a relay. The sensor senses a terminal signal from an external signal. A switching unit(120) is installed between the relay and a second antenna. The switching unit transmits a signal outputted from the relay to a base station through the second antenna. [Reference numerals] (110) Sensor; (120) Switching unit; (210) Forward direction relay process; (220) Reverse direction relay process; (230) Duplexer S; (240) Duplexer D; (300) Antenna1; (310) Antenna2; (AA) Control signal
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