一种新的三状态LMSC模型的参数拟合方法研究  

Research of Parameters Fitting in a New Three-State LMSC Model

作　　者：李敬军[1,2] 张曙[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院 [2]91208部队装备部

出　　处：《自动化技术与应用》2010年第10期65-68,75,共5页Techniques of Automation and Applications

基　　金：国防科学技术工业委员会基础亚牛基金项目(编号40106030503)

摘　　要：针对陆地移动卫星信道(LMSC)的时变特性、环境的多样性,对同一物理环境用三种概率分布模型进行拟合分析。讨论了陆地移动卫星信道模型的状态概率、模型内参数与卫星仰角的关系,较全面地拟合了信道的特性。并且针对信道模型的统计特性、BPSK信号通过信道模型的误码率进行了仿真比较,验证了信道模型的通用性与合理性。Based on the time-varying characteristics and diversity of the environment of the land mobile satellite channel（LMSC）,three probability distribution models of the same physical environment is analyzed.According to the LMSC model,the relationships between both state probability and model parameters and elevation angle of satellite are discussed.Then the channel characteristics are fitted comprehensively.Moreover,simulation comparison of the statistical characteristics of the model and BER of BPSK signal through the model is conducted.The versatility and reasonable of the proposed model are proved.

关 键 词：状态概率 参数拟合 统计特性 误码率 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]