摘要
在Ka频段及以上高频段卫星通信系统中,其链路信号的衰减很严重,主要是大气、降雨、闪烁对卫星信道的影响。本文建立了一种考虑天气影响的Ka频段LMS信道模型。通过对比该模型和Loo的模型在非阴影状态下的接收信号的概率密度函数(PDF)和误码性能,证明了所提出模型的合理性和准确性。
In Ka-band and above Ka-band satellite communications channel attenuation is badly affected by atmosphere,cloud and mist,rain and scintillation mainly. In this paper A Ka-band LMS channel model which is able to take into account weather affec-tions is proposed. The compare between the proposed model and the Loo’s model about the PDF of the received signal and the BER performance which are in no shadowing state,the latter is shown to be more reasonable and accurate.
出处
《微计算机信息》
北大核心
2008年第12期107-109,共3页
Control & Automation
基金
国家863计划项目资助(编号不公开)
关键词
KA频段
传播特性
LMS信道模型
Ka-band
Propagation characteristics
LMS channel model
