OFDM技术在GSM-R语音信道中的应用  

Application of OFDM Technology in GSM Voice Channel System

作　　者：周娟 ZHOU Juan(Department of Electrical and Information Engineering,Shaanxi Railway Institute,Weinan 714000,China)

机构地区：[1]陕西铁路工程职业技术学院电气与信息工程系,陕西渭南714000

出　　处：《电脑知识与技术》2020年第25期230-231,共2页Computer Knowledge and Technology

摘　　要：在我国铁路行业中,随着大量的数据业务增加,传统的铁路移动通信系统已经被第二代铁路移动通信系统GSM-R所取代,铁路移动通信是铁路高效运营、列车安全运行的重要保障。为了实现长距离可靠地传输数据业务保证列车的安全运行,利用GSM-R语音信道和OFDM正交频分复用技术,实现远程数据可靠传输平台。根据OFDM技术的特点,实现了GSM-R语音信道的OFDM调制解调系统,它在数据传输中具有良好的应用前景。In China's railway industry,with the increase of a large number of data services,the traditional railway mobile communi⁃cation system has been replaced by the second generation of railway mobile communication system GSM-R.To realize long-dis⁃tance reliable transmission of data and ensure the safe operation of trains,GSM-R voice channel,and OFDM orthogonal frequency division multiplexing technology are used to realize the remote reliable data transmission platform.According to the characteristics of OFDM technology,the OFDM modulation and demodulation system of the GSM-R voice channel is realized.

关 键 词：GSM-R OFDM 保密性 数据传输 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]