摘要
卫星信道的研究一直是卫星通信系统的难点,传统上的研究方法都有很明显的缺陷。将来,卫星移动通信系统会使用MIMO分集技术,这更增加了卫星通信系统研究的难度。而近年来,随着射线追踪法的发展,运用射线追踪法研究卫星通信信道成为现实,具有很多优势。运用射线追踪法,建立了城市环境下卫星移动通信MIMO信道的射线追踪模型,对其空间分集和极化分集性能进行了模型仿真性研究。结果表明,MIMO信道的射线追踪技术能有效提高信道容量。
It is difficult to research the channel of satellite communication, and the traditional method has obvious defects. In the future, the MIMO diversity technology will be used in satellite communication system, what will add the difficulty of the research on satellite communication system. Recently, the research on satellite communication channel by using the ray- tracing with its development is realized. The satellite communication MIMO channel model based on ray-tracing techniques in urban environments was setup, the performances of spatial diversity and polarization diversity were simulated and analyzed. The results show that satellite communication MIMO channel model based on ray-tracing technique can improve the channel capacity efficiently.
出处
《现代电子技术》
2010年第13期76-78,82,共4页
Modern Electronics Technique
