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《Journal of Beijing Jiaotong University》 2008-02
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Analysis and Comparison of the Performance About Wireless Modulation Technologies in Empty and Straight Mine Tunnel

NIU Li1,2,YANG Wei1,2 (1.State Key Laboratory of Rail Traffic Control and Safety,Beijing Jiaotong University,Beijing 100044,China;2.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Beijing 100083,China)  
In order to establish an effective wireless communication system in underground coal mine.After studying the fading situation of mine tunnel,this paper found out the relationship between the bit error rate(BER) of narrowband and wideband signal and transmission distance in the empty and straight mine laneway.The effects of the laneway channel on the signal at the frequency of 900 MHz、1800 MHz and 2.4 GHz is studied respectively.By comparison and analysis,it is concluded that compared with the signal at the frequency of 900 MHz and 1800 MHz,the signal of 2.4 GHz cover longer distance in the laneway when the data rate is low(such as several tens of kbit/s).Besides,wideband signal can improve the BER performance significantly,transmit more several decameters,and is more suitable for wireless communication than narrowband signal in mine tunnel.
【Fund】: 国家自然科学基金资助项目(50534060);; 煤炭资源与安全开采国家重点实验室(中国矿业大学)开放课题(2007-06)资助项目
【CateGory Index】: TN761
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