摘要
文章介绍了欧洲的TETRA和美国的APCOProject25两种典型的数字集群通信系统的相关技术,尤其是语音编码技术和调制解调技术,并对其进行了比较分析。
This paper mainly introduces technology of the two typical kinds of trunking system including TETRA in Europe and APCO Project25 in USA, and concerns on comparison of voice coding and modulation.
出处
《信息安全与通信保密》
2006年第7期144-145,共2页
Information Security and Communications Privacy