| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical conversion repeater where the effect of a weak electric field in a dead zone between adjacent slave stations is solved, further, the noise of an incoming channel added in response to the number of the slave stations is reduced to improve speech quality and the economy of a system is improved. SOLUTION: Two systems of incoming channel signal reception synthesis amplifier systems RX-1, RX-2 of a master station device 2 are selected, an input from mutually adjacent slave station devices 3 is divided into the two systems, n/2 synthesizers 25, 28 synthesize them respectively and after amplify them, the result is sent to a base station by two coaxial cables 52, 53 and diversity reception is conducted to mobile sets being in intermediate zones 4-12, 4-23,... of a zone 4. |
