Optimization-based mode selection scheme for OAM millimeter wave system in the off-axis misalignment case  

作　　者：Haie Dou Lei Wang Bin Kang Baoyu Zheng 

机构地区：[1]Key Lab of Broadband Wireless Communication and Sensor Network Technology(Nanjing University of Posts and Telecommunications),Ministry of Education,Nanjing,210003,China [2]School of Internet of Things,Nanjing University of Posts and Telecommunications,Nanjing,210003,China

出　　处：《Digital Communications and Networks》2024年第1期101-108,共8页数字通信与网络（英文版）

基　　金：supported in part by The National Natural Science Foundation of China(62071255,62171232,61771257);The Major Projects of the Natural Science Foundation of the Jiangsu Higher Education Institutions(20KJA510009);The Open Research Fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology(Nanjing University of Posts and Telecommunications),Ministry of Education(JZNY201914);The open research fund of National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology,Nanjing University of Posts and Telecommunications(KFJJ20170305);The Research Fund of Nanjing University of Posts and Telecommunications(NY218012);Henan province science and technology research projects High and new technology(No.182102210106).

摘　　要：Millimeter-wave transmission combined with Orbital Angular Momentum(OAM)has the advantage of reducing the loss of beam power and increasing the system capacity.However,to fulfill this advantage,the antennas at the transmitter and receiver must be parallel and coaxial;otherwise,the accuracy of mode detection at the receiver can be seriously influenced.In this paper,we design an OAM millimeter-wave communication system for overcoming the above limitation.Specifically,the first contribution is that the power distribution between different OAM modes and the capacity of the system with different mode sets are analytically derived for performance analysis.The second contribution lies in that a novel mode selection scheme is proposed to reduce the total interference between different modes.Numerical results show that system performance is less affected by the offset when the mode set with smaller modes or larger intervals is selected.

关 键 词：Orbital angular momentum Millimeter wave Off-axis misalignment Mode selection Capacity 

分 类 号：TN92[电子电信—通信与信息系统]