Device for decreasing interference in cable bundle and method thereof

A device for decreasing interference, comprising:

• a plurality of concentration devices connected to a cable bundle having a plurality of cables and configured to provide a network service to a plurality of terminals respectively connected to the plurality of concentration devices through corresponding cables of the cable bundle in an access section;
• and
• an interference measurer connected between the cable bundle and the plurality of terminals and configured to measure interference signals occurring between original signals by measuring signals respectively transmitted, through the corresponding cables of the cable bundle, from the plurality of concentration devices to the terminals, calculate interference coefficients, and transmit the interference coefficients respectively to the concentration devices,
• wherein one of the concentration devices is configured to receive a signal from the uplink, receive a corresponding interference coefficient from the interference measurer, generate one quasi-interference signal by applying the received corresponding interference coefficient to the received signal, and transmit the generated one quasi-interference signal to the other concentration devices, and
• wherein the one of the concentration device is configured to receive other quasi-interference signals from the other concentration devices, receive a transmission signal from the uplink, generate a final signal by adding the transmission signal and the other quasi-interference signals, and transmit the final signal to a corresponding terminal through the cable bundle.