| 摘要 |
PURPOSE: An interface unit between a BB(Baseband frequency Band) and an RF(Radio Frequency band) is provided to reduce nodes between a BB and an RF and thus reduce the number of cables by using an interface unit for a base station system. CONSTITUTION: A BB block(100) includes a plurality of BB modules(110-120) for down-converting an RF signal into a BB signal or up-converting the BB signal to an RF signal. A TX/RF block(300) includes a plurality of transceiver(310,320) using different carriers. Each of the transceivers(310,320) and the BB block(110) are interfaced through an RX/TX combiner(200) in order to exchange a transmission signal and a reception signal. The RX/TX combiner(200) switches transmission signals outputted from the BB modules(110,120) to the plurality of transceivers(310,320) and reception signals outputted from the transceivers(310,320) to the BB modules(110,120).
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