视距条件下MIMO空分复用空空通信传输方法  

Air-to-air communication transmission method by MIMO space division multiplexing under line of sight propagation

作　　者：石荣 张吉莹 SHI Rong;ZHANG Jiying(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China)

机构地区：[1]电子信息控制重点实验室,四川成都610036

出　　处：《现代电子技术》2023年第5期9-14,共6页Modern Electronics Technique

摘　　要：在大部分地面移动通信应用中,多径传输是MIMO空分复用通信建立的重要条件,而空空视距通信传输仅存单一传输路径,通常认为MIMO空分复用难以实现。针对空空通信应用场景,在对MIMO通信传输理论模型简要回顾的基础上,对视距传播条件下的点对点通信与点对多点通信这两种情况进行了详细分析,揭示了点对多点传输与多用户MIMO通信在模型应用方面的相似性,并采用DBF(数字波束形成)技术,通过多个具有特定波束零点指向设计的独立波束的叠加实现了多用户的MIMO空分复用空空通信传输功能。最后以6个具有DBF功能节点的组网通信传输为例,仿真验证了前述分析的正确性与有效性,从而为视距传播条件下的MIMO空分复用空空通信工程应用提供了重要参考。In most terrestrial mobile communication applications,multipath transmission is the important condition for the establishment of MIMO(multiple input and multiple output) space division multiplexing communication. There is only one transmission path in the air-to-air line of sight communication,so it is generally considered that it is difficult to realize the MIMO space division multiplexing. For this application scenario,the point-to-point and point-to-multipoint communication under the line of sight propagation condition are analyzed in detail on the basis of a brief review on the general theory model of MIMO communication. The model similarity between point-to-multipoint communication and multi-user MIMO communication is revealed. The digital beam forming(DBF) technology is used to realize the MIMO space division multiplexing transmission function for multi-user air-to-air communication by the independent beam superposition designed by specific beam nulling pointing designation. The networking transmission for six communication nodes with DBF function is taken as an example to verify the correctness and effectiveness of the above analysis. It is an important reference for MIMO space division multiplexing air-to-air communication engineering applications under the line of sight transmission condition.

关 键 词：空空通信 视距传播 MIMO空分复用 点对多点通信 MIMO通信 波束叠加 仿真验证 

分 类 号：TN911-34[电子电信—通信与信息系统]