DTx技术在井下通信中的应用研究

Application of DTx Technology to Mine Underground Communication

非连续传输技术(DTx)是移动通信一项重要的功能,通过发射端有无话音信号自动调整发射机的开和关来达到减小系统干扰,提高通话质量和节省发射机功耗的目的,特别适用于干扰噪声大的煤矿井下通信。论述了DTx的原理及相关的话音活性检测技术和舒适噪声产生技术,并对DTx技术在煤矿井下通信中的应用进行了研究。

Discontinuous transmission(DTx) is an important function in mobile communication.By auto-regulating opening and closing of transmitter during speech or silence periods,it can reduce the interference,in return increases speech quality and save power wasting,especially this technology is comported with large noise underground coal mine.This paper discusses DTx principle and correlative techniques,such as voice activity detection(VAD) and comfort noise generation(CNG).Application of DTx technology to mine underground communication is discussed lastly.