| 摘要 |
The present invention relates to a distributed antenna system, and more particularly to a time division duplex-type distributed antenna system. According to an embodiment of the present invention, a master unit operates in a time division duplex manner, and comprises: a passive signal distribution unit which outputs a downlink signal input via a first node to a second node, and outputs an uplink signal input via a third node to the first node; and a signal transmission and reception unit which transmits the downlink signal input via the second node to a remote device, and outputs an uplink amplification signal received from the remote device to the third node. According to the present invention, the distributed antenna system changes a path of a signal by using a passive element, such as a circulator, and thus a switch for changing a path of a signal and generation of a control signal for controlling the corresponding switch are not required. |
