摘要
针对卫星通信系统的特点,提出MIMO技术在单卫星和多卫星场景下的应用。首先分析了MIMO卫星通信系统在采用再生转发和透明转发情况下的系统容量,随后对单卫星及多卫星系统分别提出了采用正交分组码及其分布式改进形式的MIMO系统方案,最后对影响MIMO卫星通信系统的因素进行讨论。相比点对点卫星通信系统,MIMO卫星通信系统能够大大提高系统容量和频谱利用率。设计将正交分组码及其分布式改进形式在单卫星及多卫星系统中进行应用,MIMO卫星通信系统的性能将获得进一步的提升。
Applications of MIMO technology in the scenarios of single/multiple satellites are proposed according to the characteristics of satellite communication systems.First,the system capacity of MIMO satellite communication systems with regenerative payload and transparent payload is analyzed.Accordingly,MIMO schemes are designed for single/multiple satellites adopting OSTBC and its improved distributed form.Finally,factors affecting the performance of MIMO satellite communication systems are discussed.Compared with point-to-point satellite communication systems,MIMO systems significantly improve system capacity and spectral utilization efficiency.The use of OSTBC and its improved distributed form further improves the performance of MIMO satellite communication systems.
出处
《飞行器测控学报》
2010年第5期60-63,共4页
Journal of Spacecraft TT&C Technology
关键词
MIMO
卫星通信
正交分组码
Multiple-Input Multiple-Out(MIMO)
Satellite Communication
OSTBC
