作　　者： ; ; ; ;

机构地区： 中国矿业大学信息与电气工程学院

出　　处： 《中国矿业大学学报》 2006年第2期167-172,共6页

摘　　要： 为探讨矿井超宽带(UW B)通信系统中适用的单脉冲波形问题,将混合模型应用到矿井UW B系统中,得出在200 m矿井隧道内,UW B系统损耗模型可以采用自由空间传播模型.在此前提下,针对无载波2PAM UW B系统,仿真分析了不同条件下数据速率与距离的关系,以此对单脉冲进行了特性分析,结果表明:发射功率一定时,在相同数据速率下,一阶高斯比五阶高斯单脉冲可以传输更远的距离;脉宽增加时,在同样的数据速率下,距离也随之增加;对于一阶高斯波形,增加发射功率到3.8 mW时,在20 M bps下,传输距离可以达到110 m. For probing into the problem of monocycle pulse waveform applied to coal mine, the hybrid model was used in Coal Mine Ultra Wideband（UWB） Communication System. The study shows that the free-space propagation channei model could he adopted within two hundred meters for the tunnel of Coal Mine UWB System. Based on the carrierless 2PAM UWB system, the relations between data rate and transmission distance were simulated and the characteristics of monocycle pulse waveform were analyzed. The results show that the first-order derivative of Gaussian pulse can transmit much longer than that of the fifth-order derivative of Gaussian pulse under the same data rate when transmission power keeps constant. The transmission distance also increases with the increasing of the pulse width. Besides, for the first-order derivative of Gausslan pulse, the transmission distance can reach 110 meters at emission power of 3.8 mW and 20 Mbps.

关 键 词： 超宽带 单脉冲波形 传播模型 数据速率 传输距离 煤矿井下

领　　域： [矿业工程]