短波多输入多输出技术和原型系统设计

HF MIMO Technique and the Prototype System Design

针对短波通信中带宽窄、干扰大和稳定性差的问题,研究利用多输入多输出技术(MIMO)提升短波通信性能。文章首先阐述了MIMO的基本原理,分析了短波MIMO面临的主要技术挑战。介绍了短波MIMO共址异构天线的构造原理和应用前景。然后,基于USRP硬件平台和开源软件GNU Radio构建了短波MIMO原型系统。实验测试表明,短波MIMO技术是可行的,具有发展和应用前景。

For short-wave communication with narrow bandwidth,strong interference and poor stability,this paper aims at the improvement of the capability based on MIMO technique.First,the base principle of MIMO is introduced and this paper analyzes the main technical challenges of short-wave MIMO.This paper also summaries the construction principle and application prospect of co-addressing heterogeneous antenna.A short-wave MIMO prototype system is constructed using USRP hardware platform and open-source software GNU Radio.The experimental results show that the HF MIMO Technique is possible with development and application prospects.