18GHz 차량객실감시설비에서 OFDM 이더넷모뎀 방식의 지상제어시스템 구현

초록

The importance of the railroad is growing up. The construction of the urban railroad and the high-speed railroad is prearranged. The requirement about a broadband data transmission is growing bigger in the railroad at a high-speed movement. Existing passenger car monitoring system have the structure to send IF analog signal because of restriction of system structure. In this case, because system uses expensive transmitter and receiver, The system has the feature which the transmitter and receiver number is small. The development did the superior OFDM ethernet modem through existing research. The design and implementation did a ground control system of the best suited to OFDM ethernet modem. This technique becomes expectation many at a railroad field application