子载波索引OAM-OFDM系统容量分析  

Analysis of System Capacity for OAM-OFDM Based on Subcarrier Index

作　　者：代江龙 赵安邦 DAI Jianglong;ZHAO Anbang(Tibet University,Lhasa Xizang 850000,China)

机构地区：[1]西藏大学,西藏拉萨850000

出　　处：《通信技术》2024年第12期1241-1246,共6页Communications Technology

摘　　要：提出了基于轨道角动量(Orbital Angular Momentum,OAM)与索引调制(Index Modulation,IM)技术联合应用的新型子载波索引轨道角动量正交频分复用通信系统(Index Modulation with Orbital Angular Momentum based Orthogonal Frequency Division Multiplexing,IM-OAM-OFDM),旨在提升未来无线通信系统的频谱效率和传输容量。IM-OAM-OFDM系统通过OAM技术引入的模分复用,扩展了通信系统的资源维度,理论上具有无限的传输容量。同时,结合IM技术的频域索引调制,系统能够选择性地激活子载波,利用子载波索引携带额外信息,进一步提升系统效率。仿真结果表明,在大容量功率受限的场景中,所提系统具有更优良的性能。A novel IM-OAM-OFDM(Index Modulation with Orbital Angular Momentum based Orthogonal Frequency Division Multiplexing)communication system based on the joint application of OAM(Orbital Angular Momentum)and IM(Index Modulation)technology is proposed,aiming to enhance the spectrum efficiency and transmission capacity of future wireless communication systems.The IM-OAM-OFDM system expands the resource dimension of the communication system through mode division multiplexing introduced by OAM technology,theoretically possessing unlimited transmission capacity.At the same time,by integrating the frequency-domain index modulation of IM technology,the system can selectively activate subcarriers and utilize subcarrier indices to carry additional information,thus further improving the system efficiency.Simulation results indicate that the proposed system exhibits superior performance in scenarios with large capacity and limited power.

关 键 词：索引调制 轨道角动量 模分复用 正交频分复用 

分 类 号：TN914[电子电信—通信与信息系统]