摘要作为一种国家核心基本通信设施，以及全球移动通信有机构成某些，卫星移动通信系统在国家安全、紧急救援、互联网、远程教学、卫星电视广播以及个人移动通信等方面得到了广泛应用。新一代宽带卫星通信系统可以提供个人电信业务、多信道广播、互联网远程传送，是全球无缝个人通信、互联网空中高速通道必要手段。近年来卫星通信新技术不断进展，特别是低轨道卫星移动通信系统受到了人们广泛关注，其讨论与应用已成为各国战略进展重点。无线资源管理是低轨卫星移动通信系统讨论中一项重要内容，这重要是由于卫星系统资源是非常昂贵，因而如何合理而有效地管理并运用卫星系统资源已成为核心。通过对低轨道卫星无线通信信道基本特点讨论，文章详细从无线信道缺陷进行分析，并进行了 matlab 仿真模仿，得出信号通过多径信道幅频特性，多径信道对不同频率信号衰减状况不同，即具备频率选取性，以及信号通过多径信道衰减状况，以及码元间隔对传播信号影响，信号码元间隔必要远不不大于信号时延差，才能尽量减小码间干扰。核心词：低轨卫星通信，信道，信道特性AbstractAs a national key infrastructure communication ， as well as an organic part of the global mobile communications ， Star mobile communication system in national security,emergency rescue ， Internet ， satellite TV broadcasting ， remote teaching and personal mobile communication has been widely used in such aspects. A new generation of broadband satellite communication system can provide personal telecommunication business ， multicasting ， remote transmission ， the Internet is a global seamless personal communications ， high-speed Internet air passage means necessary. Satellite communication technology development in recent years，especially in low orbit satellite mobile communication system has received the widespread attention，its research and application has become a national strategic priorities. Wireless resource management is the study of Leo satellite mobile communication system is an important content，this is mainly due to the satellite syst...
