GEO多波束卫星移动通信系统多址方式选择的研究*

摘要

This paper introduces the development and classification of satellite mobile communication system, and the requirements for the selection on multiple access mode which have effects for users to share limited communication resources and effective utilization of the satellite link resources for GEO satellite communication system. It is concluded that application of TDMA multiple access mode is better than that of CDMA multiple access mode in GEO satellite communication system from the aspects of effective capacity, practical application and imple-mentation. Finally, we discuss present situation and development direction of GEO satellite mobile com-munication system in China.%简要介绍了卫星移动通信系统的发展及分类，对影响静止轨道（GEO）卫星通信系统用户共享有限通信资源和有效利用卫星链路资源的多址接入方式进行了分析。主要从有效容量、实际应用和具体实现角度考虑分析比较，得到在GEO卫星通信系统中采用TDMA多址方式优于CDMA多址方式的结论。最后探讨了我国GEO卫星移动通信系统的现状和发展方向。