共被期刊论文引用了3次
您的检索式：您选中1篇文献正在查看引证文献汇总
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 基于介质谐振器的轨道角动量天线设计显示文摘近年来,轨道角动量一直是无线通信领域的研究热点。本文将轨道角动量与毫米波技术相结合,提出了一种基于介质谐振器的轨道角动量天线。建立了该天线的等效模型,推导了其辐射场的理论表达,讨论了介质谐振器半径对涡旋波电磁波模态的影响,通过仿真结果表明,该天线在K_(a)波段有四个谐振点,能够分别产生模态l=1,2,3,4的涡旋电磁波。此外,该天线结构紧凑、成本低、增益良好,具有较高的天线效率,产生的各个模态的涡旋电磁波都具有良好的旋转性,能够获得较强的抗干扰能力,为轨道角动量在毫米波频段的应用提供了一定的现实意义。 | 王艳妮 孙学宏 刘丽萍 | 2022 | 电子测量技术2022，45，17： | 0 |
| 2 | A Revisit of Orbital Angular Momentum Multiplexing in Multipath Environment显示文摘It is commonly believed that orbital an-gular momentum(OAM)multiplexing is only suitable for short-range communications in line-of-sight(LoS)scenario and multipath propagation would be detrimental for OAM communications.It has been demonstrated very recently that OAM multiplexing could work in rich isotropic multipath environment when the conventional spatial equalization is used for data detection.Moreover,the resulting channel capacity is comparable to that of a conventional multiple-input multiple-output system.Nev-ertheless,the rich isotropic multipath environment is an ideal multipath scenario.In this paper,we investigate the performance of OAM multiplexing in arbitrary multipath environment.Contrary to the common belief,it is shown that multipath can be beneficial for OAM multiplexing in terms of channel capacity.Particularly,the OAM capacity increases with enlarged angular spread of the channel and reaches its maximum when the angular spread is comparable to the divergence angle of the OAM beam.Based on the study,the OAM multiplexing is further investigated for base station(BS)applications.It is shown that OAM based BS antennas are comparable to(or even outperform)the conventional BS antennas in terms of channel capacity. | Wei Xue Xiaoming Chen Xiaobo Liu Xiangshuai Meng Anxue Zhang Wei E.I.Sha | 2020 | Journal of Communications and Information Networks2020，5，4： | 0 |
| 3 | Energy-Efficient and Secure Power Allocation and Trajectory Optimization for UAV-Enabled Data Collection in Wireless Sensor Networks显示文摘Using unmanned aerial vehicles(UAVs)to collect data in wireless sensor networks(WSNs)has advantages of controllable mobility and flexible deployment.However,there are potential challenges of energy limitation and data security which may limit such applications.To cope with these challenges,a complicated and intractable optimization problem is formulated,which maximizes the performance metric of secrecy energy efficiency(EE)subject to the constraints of secrecy rate,maximum power,and trajectory.Then,an energy-efficient and secure solution is developed to improve the secrecy EE of the UAV-enabled data collection in the WSNs by joint optimizing the UAV’s trajectory and velocity along with the sensors’power.The proposed solution is an iterative algorithm based on the optimization approaches of alternating optimization,successive convex approximation,and fractional programming.Simulation results demonstrate that the proposed solution scheme is effective for improving the secrecy EE while guaranteeing the data security. | Dong Wang Yanping Yang Xiaoming Li Changqing Wang Falei Liu Yanpeng Hu | 2022 | Journal of Communications and Information Networks2022，7，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员