一种基于直接序列扩频技术的矿井应急通信系统设计及仿真.pdf
11 2011 年 3 月 第 3 期 电子测试 ELECTRONIC TEST Mar.2011 No.3 11 一种基于直接序列扩频技术的矿井应急通信 系统设计及仿真 王鹤1,张帆2 (1 华中科技大学 机械科学与工程学院,湖北,武汉,430074; 2 炮兵学院 信息工程系,安徽,合肥, 230031) 摘要采用扩频信号进行通信的优越性在于用扩展频谱的方法可以增大带宽来降低信噪比。在阐述扩展频谱 通信技术的基本理论和实现方法的基础上,详细介绍了直接序列扩频以及伪随机码m序列原理、产生m序列 的条件。继而提出了若干种矿井应急通信系统的具体设计方案,并利用MATLAB/Simulink软件平台对该系统 进行了仿真及分析。结果表明,该系统可以有效抑制信号干扰,可靠传输信号,达到矿井应急通信系统设计 之目的。 关键词直接序列扩频;矿井应急通信;MATLAB/Simulink仿真;相关解扩 中图分类号TP391.9 文献标识码A D e s i g n a n d s i m u l a t i o n o f m i n e e m e r g e n c y c o m m u n i c a t i o n s y s t e m b a s e d o n t h e t e c h n o l o g y o f d i r e c t s e q u e n c e s p r e a d i n g s p e c t r u m Wang He1, Zhang Fan2 (1 School of Mechanical Science and Engineering, HuaZhong University of Science 2 Department of Ination Engineering, Artillery Academy, Anhui, Hefei, 230031) Abstract The superiority of using spreading spectrum signal to communicate lies in that the of spreading spectrum can increase bandwidth and reduce SNRSignal to Noise Ratio. On the basis of demonstrating the basic theory and realization of spreading spectrum communication, the authors introduce the principle of Direct Sequence Spreading Spectrum and m-series of pseudo-random code, and the condition of generating m-series in detail. After that, some kinds of design scheme of mine emergency communication system are put forward. And the system is simulated and analyzed by MATLAB/Simulink software plat. The results indicates that the system can suppresses the signal interference effectively, transfer the signal reliably, which attains the design goal of mine emergency communication system. Keywords Direct Sequence Spreading Spectrum; Mine Emergency Communication; MATLAB/Simulink Simulation, Correlation Despreading 2011.3 Design Kenneth Y. Ogami, Bothell, both of Wash. Suppressed clock pulse-duration modulator for direct sequence spread spectrum transmission system[P]. United States Patent. No.04669089, 1987, May 26th. [5] 熊贤祚,庞建华.DS/TH 扩频多址通信系统的原理 与实现 [J].成都电讯工程学院学报,1985,增刊 2, 23-33. [6] 邹宁,徐松涛,牛建兵.基于 MATLAB/Simulink 的 扩频通信系统仿真及抗干扰研究 [J].计算机与信息 技术,2009,3 10-13. 作者简介 王鹤,华中科技大学机械科学与工程学院在读本科 生,主要研究方向为精密仪器。 E-mail 108673755 张帆,炮兵学院信息工程系讲师,博士,主要研究 方向为电磁场通信与信号处理技术。 E-mail salas0527