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.
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.
作者简介
Zhang Beibei,received the M.S.degree from China University of Mining and Technology,Xuzhou,China,in 2011,where he is currently working towards the Ph.D degree.He is also a Senior Engineer with Jiangsu Automation Research Institute,Lianyungang,China.His research interests include vortex wave communications and wireless sensor networks;corresponding author:Chen Ruirui,received the Ph.D degree in military communication from Xidian University,in 2018.He is currently a lecturer with the School of Information and Control Engineering,China University of Mining and Technology.His research interests focus on vortex wave communications,UAV communications and wireless emergency communications.He has served as the TPC Member for IEEE GLOBECOM 2024 Workshop,and served as the reviewer for many IEEE Transactions journals.email:rrchen@cumt.edu.cn;Lin Jinyang,received the B.S.degree and M.S.degree from the School of Information and Control Engineering,China University of Mining and Technology,Xuzhou,China,in 2021 and 2024,respectively.His current research interests focus on vortex wave communications;Li Qi,is currently working towards the B.S.degree with the School of Information and Control Engineering,China University of Mining and Technology,Xuzhou,China.His current research interests focus on vortex wave communication;Liang Liping,received the Ph.D degree in communication and information system with Xidian University,Xi’an,China.She is a prospective associate professor with Xidian University.Her research interests focus on 5G wireless communications with emphasis on radio vortex wireless communications and anti-jamming communications;Sun Yanjing,received the Ph.D degree in information and communication engineering from China University of Mining and Technology,Xuzhou,China,in 2008.He is currently a Professor with China University of Mining and Technology,and the Dean of the School of Computer Science&Technology,China University of Mining and Technology.His current research interests include wireless emergency communications,cyber-physical systems,wireless sensor networks,and 5G/B5G communications.
