工矿自动化2012，Vol.38Issue(1)：36-39,4.DOI:32-1627/TP.20111228.1054.011
矿井透地通信系统中的定时同步研究
Research of Timing Synchronization of Mine Through-the-Earth Communication System
摘要
Abstract
The paper researched timing synchronization of mine through-the-earth communication system. It built a simple elastic wave medium model of earth channel firstly and obtained multi-path delay of the model is 20 ms through calculation. Then it simulated, analyzed and compared application performances of data auxiliary timing synchronization method and non data auxiliary timing synchronization method in the through-the-earth communication system by use of Matlab, and got following conclusions: the non data auxiliary timing synchronization method requires high signal power of the through-the-earth communication system, and the data auxiliary timing synchronization method has higher reliability and is fitter for the through-the-earth communication system. Finally, it simulated decoding error rate of the through-the-earth communication system which used the data auxiliary timing synchronization method under the condition that length of cyclic prefix of OFDM was 0.5, 2, 4 times of the maximum delay time separately and SNR was from 0 dB to 18 dB. The simulation result showed that the decoding error rate of the through-the earth communication system achieves 10~5 order of magnitude when the length of cyclic prefix of OFDM is above 2 times of the maximum delay time and the SNR is above 16 dB, which verifies application reliability of the data auxiliary timing synchronization method in the through-the-earthcommunication system.关键词
井下通信系统/透地通信/定时同步/数据辅助同步/非数据辅助同步/解码误码率Key words
underground communication system/through-the-earth/communication/timing synchronization/data auxiliary synchronization/non data auxiliary synchronization/decoding error rate分类
矿业与冶金引用本文复制引用
郭银景,李春秋,房鲁韬..矿井透地通信系统中的定时同步研究[J].工矿自动化,2012,38(1):36-39,4.基金项目
国家自然科学基金项目(61071087) （61071087）
山东省自然科学基金项目(ZR2011FM018) （ZR2011FM018）
青岛市应用基础研究项目(11-2-4-4-(9)-jch) （11-2-4-4-(9）
