基于MIMO-OTFS通感波形的FANET快速邻居发现方法  

A Rapid Neighbor Discovery Method for Directional Flying Ad-Hoc Networks Based on MIMO-OTFS Integrated Sensing and Communication Waveform

作　　者：王为栋 杨健 尚佳栋 高晖[1] 张前南 张硕 WANG Weidong;YANG Jian;SHANG Jiadong;GAO Hui;ZHANG Qiannan;ZHANG Shuo(Key Laboratory of Trustworthy Distributed Computing and Service Beijing University of Posts and Telecommunications Ministry of Education,Beijing 100876,China;Beijing Institute of Remote Sensing Equipment,Beijing 100854,China)

机构地区：[1]北京邮电大学可信分布式计算与服务教育部重点实验室,北京100876 [2]北京遥感设备研究所,北京100854

出　　处：《现代防御技术》2025年第2期107-120,共14页Modern Defence Technology

基　　金：国家自然科学基金(62071071)。

摘　　要：针对基于定向传输的飞行器自组织网络(flying ad-hoc network,FANET)中拓扑变化频繁、链路质量波动以及初始建网困难等问题,提出了一种基于多输入多输出(multiple-input multipleoutput,MIMO)正交时频空(orthogonal time frequency space,OTFS)通感一体化波形的感知辅助快速邻居发现方法,借助感知机制实时获取邻节点信息以加速建网效率,并采用新型的通感一体波形OTFS以对抗快变信道中的多普勒效应,提升链路质量。针对FANET场景研究物理层基于MIMOOTFS通感一体化波形的多目标检测技术;将物理层感知方案映射到上层网络中,设计感知辅助的高效邻居发现算法;最后提出一种多点通感协同机制,通过邻节点间交互感知信息和邻居发现表以间接感知及发现潜在目标,提升FANET初始建网的效率。仿真结果表明,所提方案相比传统通信组网协议可以极大降低FANET的初始建网耗时,增加目标感知精度,提升组网的整体性能。Flying ad-hoc networks(FANET)using directional transmissions face challenges during network initialization due to frequent topology changes and fluctuations in link quality.To address these issues,a sensing-assisted rapid neighbor discovery method is proposed.The main idea of this method is to use a sensing mechanism to obtain neighbor node information,which accelerates network efficiency.In addition,this paper describes the adoption of a new integrated sensing and communication waveform,known as multiple-input multiple-output(MIMO)orthogonal time-frequency space(OTFS),which combats the Doppler effect in fast-changing channels and improves link quality.For FANET scenarios,a multi-target detection technique based on MIMO-OTFS integrated sensing and communication waveforms is studied at the physical layer.This physical layer sensing scheme is then mapped to the upper layer network,and a sensing-assisted efficient neighbor discovery algorithm is designed.Additionally,a integrated sensing and communication mechanism for collaborative discovery of multi-point is proposed.This mechanism indirectly senses and discovers potential targets by interacting with sensing information and neighbor discovery tables among neighboring nodes.The proposed mechanism enhances the initial networking efficiency of FANET.Simulation results demonstrate that the proposed scheme outperforms pure communication protocols.This leads to a significant reduction in the initial networking time of FANET,an increase in target sensing accuracy,and an overall improvement in network performance.

关 键 词：正交时频空 通感一体技术 邻居发现 多目标检测技术 多输入多输出 

分 类 号：V279[航空宇航科学与技术—飞行器设计] TN929.5[电子电信—通信与信息系统] TJ0[电子电信—信息与通信工程]