HAPS通信中基于MIMO的信号协作接收方案性能分析

Property analysis of a HAPS communication scheme based on MIMO for signal's cooperative reception

分析了在HAPS中应用协作通信的需求,研究了HAPS通信信道在不同仰角区域的特性,在此基础上提出一种HAPS通信中基于MIMO的信号协作接收方案,并在不同仰角区域中对该协作接收方案进行性能仿真,仿真结果表明,在中、低仰角区域内使用该协作接收方案能够获得较大的组合分集增益,但是,对于高仰角区域此协作通信方案的性能改善不明显,最后,就上述2种现象产生的原因进行了分析。

First the demand of applying cooperative communication via HAPS is analyzed. Then the character of HAPS communication channel in different elevation angles is studied. This paper presents a HAPS communication scheme based on MIMO for signal＇s cooperative reception on the basis of two works mentioned above. And a property simulation towards the cooperative reception scheme in different elevation angles is made. The simulation results shows the following：The cooperative reception scheme can obtain a relatively large combining diversity gain in middle＆ low-elevation angle area. However, there is little property improvement in high-elevation angle by using this scheme. Finally, the reason why different results occur in different elevation angles is analyzed.