基于MF-CDMA的低轨道通信卫星系统容量分析  

Capacity analysis of LEO satellite system based on MF-CDMA connection

作　　者：张晓奇[1] 李法庆[2] 孙友伟[3] 

机构地区：[1]陕西省科技信息研究所,陕西西安710054 [2]陕西省生产力促进中心,陕西西安710054 [3]西安邮电学院继续教育学院,陕西西安710121

出　　处：《西安邮电学院学报》2007年第1期28-31,共4页Journal of Xi'an Institute of Posts and Telecommunications

摘　　要：研究了全球星卫星通信系统在干扰条件下的通信容量。根据MF-CDMA模型特征,介绍了一种干扰因子的计算方法,分析了干扰因子与系统可供信道量的关系。结合全球星系统的特点,选择了典型的信道和链路参数进行估算,分别得到了系统的可供信道量和系统通信容量。实验结果表明在干扰因子和信噪比合理的情况下,全球星系统的用户的通信需求是不难满足的。This paper analyzes the capacity of Globalstar Satellite System under interference. A method of interference factor caculation is introduced based on MF - CDMA model characters, and the relationship between interference factor and the number of active channels is analyzed. Combined with the characteristics of Globalstar system, we select typical channel and link parameters in estimation to yield the number of afforded channels and the system traffic capacity. The results show that under the condition of reasonable interference and SNR, it is not difficult to satisfy the requirements of customer communication of Globalstar system.

关 键 词：低轨道卫星 容量分析 全球星系统 

分 类 号：TN927[电子电信—通信与信息系统]