OFDM-based Anti-multipath Fading Of Scheme Research In Mine Communications

China is the world's largest coal consumer and producer. With the rapid economic growth, coal demand will continue to rise, the importance of the coal industry is self-evident. As underground mining very dangerous, the accident of coal production is frequent happened. The coal industry is a real-time location and status monitoring of strong demand for industry. Wireless communication is very an important aspect of the modernization in underground coal production. particularly in coal production in recent years as technology, production management and information technology continues to progress and development, as well as mine the bandwidth wireless communications, intelligent information needs of more and more. Underground development of wireless communication has become the only way forward. Wireless communication technology development and application of wireless communications in the mine field of great prospects.This paper analyzes the coal mine complex communication environment, wireless communications, the signal in the mine tunnel in the communication and the factors that affect the signal propagation and radio channel modeling on the mine. According to mine the complexity of wireless communications, environmental analysis, wireless communications is currently the most important mine is a multi-path fading problem. The existing wireless communication systems, anti-multipath fading is not an option a good solution to wireless communications in the mines in the multi-path fading, the status of this paper is based on OFDM-based anti-mine technology, multi-path fading communication systems. The use of OFDM-specific anti-multipath fading performance of wireless communications to solve mine was severely multi-path fadingThis paper presents the design of integrated systems, through Matlab in Simulink to build the mine OFDM-based anti-multipath fading simulation model of the system. 2,4,6 respectively, spread path simulation, the results obtained, with the path of the increase in the number of symbol error rate reduced. Illustrates OFDM technology can be clearly against the multi-path fading, which can significantly improve the multi-path transmission environment of wireless communication system performance. And in accordance with power spectrum and constellation diagram, verify the system performance of other related.