检索结果-内蒙古大学图书馆

arXiv 2024年

作者： Hammoud, Hussein Zhang, Yuning Cheng, Zihang Sangodoyin, Seun Hofer, Markus Pasic, Faruk Pohl, Thomas M. Závorka, Radek Prokes, Ales Zemen, Thomas Mecklenbräuker, Christoph F. Molisch, Andreas F. Ming Hsieh Department of Electrical and Computer Engineering University of Southern California United States Georgia Tech’s School of Electrical Engineering and Computer Engineering United States AIT Austrian Institute of Technology Austria Institute of Telecommunications Technische Universität Germany Department of Radio Electronics Brno University of Technology Czech Republic

The coordination of vehicles is a crucial element of autonomous driving, as it enhances the efficiency, convenience, and safety of road traffic. In order to fully exploit the capabilities of such coordination, communication with high data rate and low latency is required. It can be reasonably argued that millimeter-wave (mm-wave) vehicle-to-vehicle (V2V) systems are capable of fulfilling the aforementioned requirements. Nevertheless, in order to develop a system that can be deployed in real-world scenarios and to gain an understanding of the various effects of mmwave propagation, it is necessary to perform radio propagation measurements and to derive radio channel models from them across a range of scenarios and environments. To this end, we have conducted measurement campaigns at 60 GHz in a variety of situations, including driving in a convoy, driving in opposite direction on a six-lane road, and overtaking. These measurements employ a channel sounder based on ReRoMA, a recently introduced concept that enables the real-time measurement of dynamic double-directional radio channels. The evaluations presented herein encompass key channel parameters, including the path loss (path loss coefficient of approximately 1.9), the root mean square (RMS) delay spread (within a range of 5 ns to 110 ns), the angular spreads (in a range of 0.05 to 0.4), the power distribution among multipath components, and the channel stationarity time (multiple seconds). Copyright © 2024, The Authors. All rights reserved.

关键词： Time measurement

来源：评论

学校读者我要写书评

暂无评论

Security of the Cryptosystem GPT Based on Rank Codes and Term-rank Codes

Security of the Cryptosystem GPT Based on Rank Codes and Ter...

引用

2021 International Conference engineering and Telecommunication, En and T 2021

作者： Nguyen, Du Hoan Pham, Huu Loc Le Thi Trang, Linh Phystech School of Radio Engineering and Computer Science Moscow Institute of Physics and Technology Moscow Russia Electric Power University Information Technology Faculty Hanoi Viet Nam

ISBN: (纸本)9781728183909

This paper investigates public key cryptosystems (PKC) in the rank metric and term-rank metric. For security analysis of cryptosystems, we introduce a GPT system. Recently, respective structural attacks this system were proposed by Over-beck. For GPT system, Overbeck's attack succeeds in polynomial time. We will discuss the new construction of Shiki system. This paper describes Overbeck's attack to the new Shiki system. Also, investigation of the possibility of using term-rank codes in public key cryptosystems. © 2021 IEEE.

关键词： Polynomial approximation

来源：评论

学校读者我要写书评

暂无评论

A Link Adaptive Approach for Federated Learning aided UAV Networks

A Link Adaptive Approach for Federated Learning aided UAV Ne...

引用

International Wireless Communications and Mobile Computing Conference, IWCMC

作者： Hongming Zhang Xi Meng Yiran Xian Pengpeng Li School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing China China Telecom. Research Institute Beijing China School of Computer Science & Technology Beijing Institute of Technology Beijing China State Radio Regulation of China Beijing China

ISBN: (数字)9798350361261

ISBN: (纸本)9798350361278

Federated learning (FL) assisted unmanned aerial vehicle (UAV) networks have been considered as a promising technology for the future Internet of Things (IoT) scenarios, where both the communication cost and computational cost can be reduced. In this paper, a FL assisted UAV networks are considered for performing image classification tasks in IoT, where an aerial base station (ABS) is deployed as the aggregation center and UAVs are deployed as the local entities. Firstly, the system performance is analyzed in terms of algorithm convergence and energy consumption. Then, we propose a link adaptive approach for the FL assisted UAV networks, where a link quality selection scheme and a model parameter selection scheme are conceived at the ABS and each UAV, respectively. Finally, the system performance is evaluated by simulation results, showing that the proposed link adaptive approach is capable of attaining a faster convergence performance and a higher classification accuracy compared to the conventional FL scheme.

关键词： Wireless communication Energy consumption Adaptation models Adaptive systems Accuracy Federated learning System performance

来源：评论

学校读者我要写书评

暂无评论

Obstacle Avoidance in Routing with GNR Interconnect

Obstacle Avoidance in Routing with GNR Interconnect

引用

Devices for Integrated Circuit (DevIC)

作者： Subrata Das Arighna Deb Soumya Pandit Debesh Kumar Das Dept. of Computer Science & Engineering Supreme Knowledge Foundation Group of Institutions Hooghly West Bengal India School of Electronics Engineering Kalinga Institute of Industrial Technology Bhubaneswar India Institute of Radio Physics and Electronics University of Calcutta Kolkata India Dept. of Computer Science & Engineering Jadavpur University Kolkata India

ISBN: (数字)9798350391107

ISBN: (纸本)9798350391114

During the routing phase of VLSI physical design, obstacles often arise along the routing paths due to previously established connections or other constraints. These obstacles pose significant challenges for VLSI designers in constructing efficient routing trees that navigate around them. Graphene nanoribbon interconnects, which are limited to bending angles of 0°, 60°, and 120°, further complicate this process. The routing cost for graphene nanoribbon interconnects depends on both the interconnect length and the bending angles involved. In this work, we propose a cost-minimization technique that leverages graphene nanoribbon interconnects to determine optimal routing paths for a given source node, a set of sink terminals, and multiple rectangular obstacles.

关键词： Costs Navigation Graphene Integrated circuit interconnections Very large scale integration Bending Routing Minimization Nanoscale devices Physical design

来源：评论

学校读者我要写书评

暂无评论

Obstacle Avoidance in Routing with GNR Interconnect 6

Obstacle Avoidance in Routing with GNR Interconnect

引用

6th International Conference on Devices for Integrated Circuit, DevIC 2025

作者： Das, Subrata Deb, Arighna Pandit, Soumya Das, Debesh Kumar Supreme Knowledge Foundation Group of Institutions Dept. of Computer Science & Engineering West Bengal Hooghly India Institute of Industrial Technology School of Electronics Engineering Kalinga Bhubaneswar India University of Calcutta Institute of Radio Physics and Electronics Kolkata India Jadavpur University Dept. of Computer Science & Engineering Kolkata India

ISBN: (纸本)9798350391107

关键词： Graphene nanoribbon

来源：评论

学校读者我要写书评

暂无评论

Distributed Aperture Coherent Synthesis Method based on Two-stage Compensation

Distributed Aperture Coherent Synthesis Method based on Two-...

引用

Signal, Information and Data Processing (ICSIDP), IEEE International Conference on

作者： Zhongwei Liu Dongming Zhou Rongrong Xiang Jie Chen Tianhang Wu Tianyu Ding Xiaochuan Liu Hongwei Gao School of Electronic and Information Engineering Beihang University Beijing China Radar Research Lab School of Information and Electronics Beijing Institute of Technology Beijing China Department of Data Technology and Application Beijing Institute of Computer Technology and Application Beijing China Radar R&D Center Beijing Institute of Radio Measurement Beijing China

ISBN: (数字)9798331515669

ISBN: (纸本)9798331515676

To solve the problem that it is difficult to accurately estimate the coherent parameters of distributed aperture radar under the condition of low signal-to-noise ratio, a distributed coherent synthesis method based on two-stage compensation is proposed in this paper. This method utilizes prior information such as system layout, beam pointing, and inertial navigation station location to perform coarse alignment of echoes at the first stage in time, and then uses cross-correlation method to estimate coherent parameters of delay and phase within a small range, and perform precise compensation of time and phase at the second stage, so as to realize the coherent synthesis of multiple radar echoes. Experimental results show that the proposed method can effectively realize distributed coherent synthesis processing under low signal-to-noise ratio.

关键词： Accuracy Layout Radar Inertial navigation Apertures Data processing Radar signal processing Delays Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Millimeter-wave Wide-angle Scanning Phased Array Based on Heterogeneous Antenna Elements

Millimeter-wave Wide-angle Scanning Phased Array Based on He...

引用

International Conference on Microwave and Millimeter Wave technology Proceedings

作者： Zhongying Wang Jiaojing Fan Wanchen Yang Wenquan Che Quan Xue School of Electronic and Information Engineering South China University of Technology Guangzhou China Shanghai Radio Equipment Research Institute Shanghai China College of Computer and Information Hohai University Nanjing China

In this manuscript, a millimeter-wave wide-angle scanning phased array based on heterogeneous antenna elements is proposed. The array consists of two different types of magneto-electric (ME) dipole antennas with broadside and end-fire radiation direction respectively. In order to improve scanning performance, the two end-fire elements are arranged at the two sides of the 6 broadside elements, thus a 1×8 wide-angle scanning array is built. The proposed phased array using LTCC multi-layer integration technology so that it can be integrated on a single board. The distance between each element is 0.4λ 0 at 24GHz so as to suppress the side slob level during the whole scanning process. Decoupling structure is added between adjacent broadside elements to realize high isolation. The simulation result indicate that 10-dB impedance band of the proposed array can cover the band of 24 to 26GHz (8%) with the isolation higher than 22dB between adjacent elements. Moreover, the array can achieve a large scanning range of -75°~75° at 24GHz within 3dB gain drop, meanwhile keep the active S parameter lower than -9.5dB during the whole scanning range. Those results indicate that the proposed array is a competitive candidate in future millimeter-wave communication.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Novel Approach to Predictive-Trajectory-Aware Service Migration in Edge Computing 11

A Novel Approach to Predictive-Trajectory-Aware Service Migr...

引用

11th International Conference on Information Systems and Computing technology, ISCTech 2023

作者： Ma, Yong Dai, Mengxuan Xia, Yunni Liu, Zhiquan Shao, Shiyun Zhao, Han Li, Guozheng Tang, Yong Niu, Xinzheng Jiangxi Normal University School of Computer Information Engineering Jiangxi330022 China Chongqing University College of Computer Science Chongqing400044 China Jinan University College of Cyber Security Guangzhou510632 China Université de Montréal Département d'Informatique et Recherche Opérationnelle QuébecH3C 3P8 Canada Jiangxi Normal University Digital Industry College Jiangxi330022 China Guizhou Radio and Television Information Network Co Ltd Guiyang610101 China University of Electronic Science and Technology of China School of Computer Science and Engineering Chengdu610054 China

ISBN: (纸本)9798350342406

Mobile edge computing (MEC) is a promising technology that enables edge devices to perform previously impossible tasks by providing them with computing power support. In this paper, in order to optimize the resource provisioning and service capability of edge service deployed over IoT nodes, we put forward a novel service migration predictive-trajectory-aware method through using track perception methods (SMP), Enlightening algorithms for determining the migration plans and a migration algorithm that migrate edge services according to user trajectories. In the case study, We conducted a comparison test and the results showed that the SMP has certain advantages in several indicators. © 2023 IEEE.

关键词： Trajectories

来源：评论

学校读者我要写书评

暂无评论

Orbital angular momentum of spin electromagnetic wave

引用

Results in Physics 2024年 61卷

作者： Sun, Zhiwei Du, Mingzhu Guo, Zhenkun Xu, Ruolei Zhao, Junming Feng, Yijun School of Electronic Science and Engineering Nanjing University 210023 China School of Microelectronics and Communication Engineering Chongqing University 400044 China Shanghai Radio Equipment Research Institute Shanghai Academy of Spaceflight Technology 201109 China Department of Electrical and Computer Engineering National University of Singapore 117583 Singapore

Spin angular momentum (SAM) and Orbital angular momentum (OAM) are two distinct forms of electromagnetic angular momentum (AM). Generally, circularly-polarized (CP) wave is deemed as the typical form of spin wave, which carries SAM only. In this work, the OAM characteristic of spin wave is found after stating the CP wave into the cylindrical coordinate: the spin wave contains two components along r and ϕ directions, which carry both SAM and OAM. Based on the OAM character of spin wave, an electromagnetic waveform with SAM in the center and SAM-OAM beside is demonstrated. In addition, since spin wave carries OAM naturally, a spin–orbit coupling mechanism is performed, which demands no spin Pancharatnam–Berry phase nor any phase modulation structure. All the results have been experimentally verified. Our research can be utilized in the theoretical studies of rotational electromagnetic and may be potentially applied in metamaterial, information and quantum research areas. © 2024

关键词： Angular momentum Helical beam waves Polarization-phase Spatial-phase Spin-orbit coupling

来源：评论

学校读者我要写书评

暂无评论

Term-rank codes for data storage systems

Term-rank codes for data storage systems

引用

2020 International Conference engineering and Telecommunication, En and T 2020

作者： Pham, Huu Loc Phystech School of Radio Engineering and Computer Science Moscow Institute of Physics and Technology Moscow Russia

ISBN: (纸本)9781728188294

In this paper, the data storage process is considered from the point of view of coding theory. A hybrid of data storage systems and error-correcting code (ECC) is a promising technology storage with high performance. Error correction is inevitable in the data storage system and the error rate will increase with the number of write/delete and save data. However, the error-correction code degrades I/O performance of the system due to increased reading and encoding/decoding time from memory. Our work is to investigate the applicability of term-rank code in the data storage system. © 2020 IEEE.

关键词： Error correction

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：