临近空间通信高仰角区MIMO分集和抗雨衰方案性能研究

A Performance Research of an Anti-rain Attenuation Scheme Based on MIMO Diversity via HAPS Telecommunication in High Angle Areas

基于MIMO分集技术,提出了一种有效对抗雨衰的临近空间协作通信方案。理论分析并推导了该方案的系统容量。在着重对临近空间通信高仰角区雨衰信道的相关特性进行分析的基础上,仿真研究了该方案的抗雨衰性能。研究结果表明:与VBLAST系统相比,方案虽然损失了部分复用增益,但在10-3误码情况下得到近15 dB的增益。与此同时,方案在不同相关特性的信道下产生的误码性能波动小于同等条件下,VBLAST系统产生的性能波动。

A cooperative telecommunication scheme via HAPS is presented based on MIMO techniques for diversity. The system capacity of this scheme is analyzed theoretically. And a simulation to analyze the performance of this anti-rain attenuation scheme is made after detailed analysis about the correlated attributes of rain attenuation channels via HAPS in high angle areas. The research results show that even if the presented scheme leads to losses of multiplexing gain compared with VBLAST, it dose obtain performance gain of nearly 15 dB when the error rate is 10-3. Meanwhile, the performance of this presented scheme has a rather smaller variation than that of VBLAST system when the correlated attributes of channels change .