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무선통신 기반의 열차제어시스템 성능 향상을 위한 Alamouti 방식 적용에 관한 연구
안윤섭(Yun-Sub AN),김동호(Dong Ho Kim),정득영(Deuk Young Jenong) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
CBTC(Communication-Based Train Control) system which is based on wireless communication can provide high density operation of the train using location tracking between ground and onboard train. It can also reduces maintenance expense because it does not require the ground equipment for tracking circuit and signal flag and so on. Recently, research and interest have been done on CBTC system. The high-speed trains up to 300㎞/h experience multi-path fading channel which bring about the performance degradation of wireless CBTC system. In this paper, we consider MIMO (Multi-Input Multi-Output) antenna-based CBTC system for trains with Alamoutip-type space-time diversity transmission for reliable communication. Also we model a channel considering practical environment and evaluate performance improvement of proposed CBTC system.