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MOBILE COMMUNICATION SYSTEM FOR EFFICIENTLY COVERING SHADOWY AREA OF BASE STATION AND EASILY ABLE TO EXPAND AREA GIVEN SERVICE
MOBILE COMMUNICATION SYSTEM FOR EFFICIENTLY COVERING SHADOWY AREA OF BASE STATION AND EASILY ABLE TO EXPAND AREA GIVEN SERVICE
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机译:移动通信系统,可有效地覆盖基站的阴影区域并易于扩展提供服务的区域
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摘要
PURPOSE: A mobile communication system is provided to efficiently cover the shadowy area inside and outside a base station and to easily expand the area given service of the base station. CONSTITUTION: The remote sending and receiving device(30) installed within the service area of the base station(10) comprises the steps of: inputting a RF signal into a low noise amplifier, received through the receiving unit(34) of an antenna(32) and a duplexer(34) from the base station(10); amplifying the received RF signal, suppressing the amplifying degree of the noise included in the received RF signal; obtaining the difference between the output of the low noise amplifier and a standard frequency at a frequency downward transformer(42) and removing the unwanted wave included in the output of the frequency downward transformer at a band passing filter(44).
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