Research on superior mobile communications based on a fibre optic repeater system in a coal mine

摘要

In order to improve the effectiveness of mobile communications in a coal mine, the DSP automatic monitoring system has been put into practice. It introduces an FIR digital filter, which reduces noise by subtraction and so on, based on a fibre optic repeater system application platform. It makes the mine communication system more stable, voice quality better, and it provides new thinking on the best applications for mobile communications in a mine.