| 摘要 |
A distributed antenna system, in one embodiment according to the technical concept of the present invention, comprises: a headend device configured to generate a downlink transmission signal by combining a plurality of downlink RF signals, received from a plurality of base stations, in different frequency bands, and convert the downlink transmission signal into a downlink optical signal; a main remote device configured to receive the downlink optical signal from the headend device, convert the downlink optical signal into the downlink transmission signal, and amplify the plurality of downlink RF signals included in the downlink transmission signal; and a sub remote device configured to receive the downlink transmission signal distributed from the main remote device, and amplify the plurality of downlink RF signals included in the distributed downlink transmission signal. |
