| 摘要 |
A digital radio system able to efficiently maintain transmission quality, provided with repeater equipment including a plurality of pairs of regenerating units between the transmitting and receiving ends for individually receiving waves of upstream and downstream routes at repeating points of redundantly configured radio transmission lines formed under a full duplex mode and demultiplexing and extracting the transmission information and control information multiplexed in the received waves, a plurality of pairs of repeating units for multiplexing the transmission information and control information individually extracted by the plurality of pairs of regenerating units and relaying the multiplexed information to the following repeater sections through the redundantly configured radio transmission lines, and a plurality of intersymbol interference measuring units for individually measuring the degree or frequency of intersymbol interference of received waves for one of the upstream and downstream routes, the repeating units corresponding to the one upstream or downstream route among the plurality of pairs of repeating units further including units for multiplexing the transmission information and control information individually extracted by the regenerating units corresponding to that one route among the plurality of pairs of regenerating units with information indicative of the degree or frequency of intersymbol interference. <IMAGE> |
