摘要
iDEN(IntegratedDigitalEnhancedNetwork)数字集群通信系统采用矢量和激励线性预测(VSELP)话音编码技术,通过对其分析和话音实测,得到相关参数,当话音编码器速率为4.8kbit/s(TDMA1∶6)、无线覆盖区电场强度≥-105dB、信噪比≥22dBm时,单工调度通信得到Mos3.5的话音质量,对技术应用和建网具有一定的参考价值。
In iDEN system, Vector Sum Excited Linear Prediction(VSELP) speech coding technology is adopted. By performing analysis and survey on the speech, some relevant parameters are obtained,which have reference value for the application of the technology and establishing networks. If the rate of VSELP speech coding is 4.8kbit/s (TDMA 1∶6), the field strength of wireless coverage is≥-105dB, C(carrier)/I(interfere) is ≥22dBm,then the quality of one-way dispatch's speech sounds is about Mos 3.5.
出处
《电讯技术》
北大核心
2004年第4期78-81,共4页
Telecommunication Engineering
基金
国家十五科技攻关深圳ITS智能交通示范工程专项基金资助项目(2002BA404A12)
关键词
数字集群通信系统
iDEN
VSELP
语音编码
Digital trunked communication system
iDEN(Integrated Digital Enhanced network)
VSELP
Speech coding
