DS-CDMA卫星通信系统容量分析与仿真  

Analysis and Simulation of the Capacity of DS-CDMA Satellite Communication System

作　　者：王立功[1] 韩志军[2] 潘申富[3] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]总参通信部驻石家庄地区军事代表室,河北石家庄050081 [3]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2008年第4期7-8,共2页Radio Communications Technology

摘　　要：分析了影响DS-CDMA卫星通信系统容量的主要因素,如带宽扩展因子、地球站发射功率、系统抗干扰能力、传输质量要求、系统功率控制性能等;建立了DS-CDMA卫星通信系统的仿真模型,导出了系统容量计算的闭环表达式,并对一个典型系统的容量进行了计算和仿真,验证了理论分析的正确性,给出了实际工程应用中的设计建议,对具有较大容量的卫星通信系统的设计有一定的借鉴意义。Tbe main factors that affect the capacity of DS-CDMA satellite communication system are analyzed in this paper, such as bandwidth expansion factor, transmitting power of earth station, the anti-interference capability of system, transmission quality requirement, power control performance of system, and so on. Then the simulation model of DS-CDMA satellite communication system is established and the closed loop expression for system capacity calculation is educed. Finally, the capacity of a typical system is calculated and simulated to validate the theoretic analysis above, and design suggestions in actual engineering application are given, which may be used as reference for the design of satellite communication system with large capacity.

关 键 词：DS-CDMA 系统容量 抗干扰 卫星通信 

分 类 号：TN927[电子电信—通信与信息系统]