RADIO LAN SYSTEM USING OPTICAL FIBER AND ITS RADIO LAN REPEATER

PROBLEM TO BE SOLVED: To provide a radio LAN system using optical fibers which can be easily extended. SOLUTION: Each optical fiber 111 of an optical fiber network system is provided with a first radio LAN repeater 30 and a second radio LAN repeater 50 is cascade-connected by a cable (pair line cable 40) to the poststage. Also, the first radio LAN repeater 30 is provided with a power unit 36 and an interface device 34 and data signals and electric power are superimposed and supplied to the poststage by the pair line cable 40. Also, the second radio LAN repeater 50 is provided with the power unit 55 and an interface 51, the electric power is received from the superimposed signals of an upper stage and the superimposed signals are transmitted to the poststage by the interface device 54 further. Since not only the data signals but also the electric power is transmitted, the radio LAN system is easily extended or constructed without laying new optical fibers 111 or power lines 20. Also, thus, the radio LAN system is provided at a low cost. COPYRIGHT: (C)2004,JPO&NCIPI