Multi-User Cooperative Receive Scheme for Air-to-Ground Vortex Wave Communications  

作　　者：Zhang Beibei Chen Ruirui Lin Jinyang Li Qi Liang Liping Sun Yanjing 

机构地区：[1]School of Information and Control Engineering,China University of Mining and Technology,Xuzhou 221116,China [2]Jiangsu Automation Research Institute,Lianyungang 222061,China [3]State Key Laboratory of Integrated Services Networks,Xidian University,Xi’an 710071,China

出　　处：《China Communications》2025年第3期76-85,共10页中国通信(英文版)

基　　金：supported in part by National Natural Science Foundation of China under Grant 62441115 and 62201427;in part by the Ministry of Industry and Information Technology of the People’s Republic of China under Grant CBG01N23-01-04.

摘　　要：Orbital angular momentum(OAM)can achieve multifold increase of spectrum efficiency,but the hollow divergence characteristic and Line-of-Sight(LoS)path requirement impose the crucial challenges for vortex wave communications.For air-to-ground vortex wave communications,where there exists the LoS path,this paper proposes a multi-user cooperative receive(MUCR)scheme to break through the communication distance limitation caused by the characteristic of vortex wave hollow divergence.In particular,we derive the optimal radial position corresponding to the maximum intensity,which is used to adjust the waist radius.Based on the waist radius and energy ring,the cooperative ground users having the minimum angular square difference are selected.Also,the signal compensation scheme is proposed to decompose OAM signals in air-to-ground vortex wave communications.Simulation results are presented to verify the superiority of our proposed MUCR scheme.

关 键 词：air-to-ground capacity cooperative receive MULTI-USER vortex wave communications 

分 类 号：TN929.5[电子电信—通信与信息系统]