Optical fiber trackside radio communications system

摘要

A system to reduce number of APs (base station) and handover number (number of times to switch the APs) and secure a communication feasible area to prevent break of communication between a mobile body side and a ground side is disclosed. In this system, an optical fiber (15) connected to an AP (base station) (11) is branched by optical distribution means (17), and a plurality of tail ends of the optical fiber is thereby formed. E/O, O/E conversion means (optical signal/electronic signal interconversion means) (19) which convert optical signals and electronic signals and antennas (21) emitting radio waves are respectively provided at the plurality of tail ends of the optical fiber. The respective antennas are arranged along a track (3) on which a mobile body (1) moves. The whole track is covered by a continuous area comprised of communication feasible areas (23) for the respective antennas. Consequently, the communication feasible area on the track of the mobile body by one AP can be wide.