MIMO技术在机载超短波通信中的应用  

The Application of MIMO in Aviation Ultrashort Wave Communication

作　　者：李建森[1] LI Jiansen(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《通信电源技术》2023年第7期173-176,180,共5页Telecom Power Technology

摘　　要：多输入多输出(Multiple Input Multiple Output,MIMO)技术的核心是在通信系统的收发2端通过多天线进行射频信号的接收和发送,通过多径信道的叠加增加通信系统容量,降低接收信噪比,提高传输速率和通信质量。结合机载超短波通信的特点,提出了一种双收双发技术,介绍了该技术的需求、信号处理设计、设备设计、系统设计以及实验验证。该技术不仅可以提高接收灵敏度,还可以利用双天线较好的覆盖性在一定程度上改善超短波通信的连续性和可靠性,对提高超短波通信质量具有重要意义。The core of Multiple Input Multiple Output(MIMO)technology is to receive and send radio frequency signals through multiple antennas at the transceiver end of the communication system,and increase the communication system capacity,reduce the receiving signal-to-noise ratio,and improve the transmission rate and communication quality through the superposition of multipath channels.Combined with the characteristics of airborne ultrashort wave communication,a dual-receiving and dual-transmitting technology is proposed,and the requirements,signal processing design,equipment design,system design and experimental verification of this technology are introduced.This technology can not only improve the receiving sensitivity,but also improve the continuity and reliability of ultrashort wave communication to some extent by using the good coverage of dual antennas,which is of great significance to improve the quality of ultrashort wave communication.

关 键 词：超短波通信 多输入多输出(MIMO) 双收双发 空间分集 空时编码 

分 类 号：TN92[电子电信—通信与信息系统]