检索结果-内蒙古大学图书馆

International Conference on wireless communications and Signal Processing (WCSP)

作者： Mingkai Chen Yu Xie Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)9781665450867

Because of prior knowledge, a person will deduce the strength of the contact force using only visual input. This research proposes a method for cross-modal signal processing to recover tactile information by using visual input. According to our method, visual information supplements tactile information as an auxiliary source. Our paper starts with a group of photos (GOPs) and uses them as input. Second, to identify regions of in-terest(ROI), we employ the low-rank foreground based attention mechanism (LAM). In order to determine contact force in video frames, we prefer to suggest a linear regression convolutional neural network (LRCNN). Results from experiments support our ability to rebuild sentience. Additionally, simulation results as compared to alternative methods of work, our method can save network costs while also increasing the accuracy of material identification.

关键词： wireless communication Visualization Costs Correlation Simulation Force Linear regression

来源：评论

学校读者我要写书评

暂无评论

Resource Scheduling in URLLC and eMBB Coexistence Based on Dynamic Selection Numerology

引用

wireless communications and Mobile Computing 2024年第1期2024卷

作者： Wang, Lei Tao, Sijie Zhao, Lindong Zhou, Dengyou Liu, Zhe Sun, Yanbing School of Telecommunications and Information Engineering Nanjing University of Posts and Telecommunications Nanjing210003 China Key Lab. of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing210003 China School of Foreign Studies Jiangsu Open University Nanjing210036 China

This paper focuses on the resource allocation problem of multiplexing two different service scenarios, enhanced mobile broadband (eMBB) and ultrareliable low latency (URLLC) in 5G New Radio, based on dynamic numerology structure, mini-time slot scheduling, and puncturing to achieve optimal resource allocation. To obtain the optimal channel resource allocation under URLLC user constraints, this paper establishes a relevant channel model divided into two convex optimization problems: (a) eMBB resource allocation and (b) URLLC scheduling. We also determine the numerology values at the beginning of each time slot with the help of deep reinforcement learning to achieve flexible resource scheduling. The proposed algorithm is verified in simulation software, and the simulation results show that the dynamic selection of numerologies proposed in this paper can better improve the data transmission rate of eMBB users and reduce the latency of URLLC services compared with the fixed numerology scheme for the same URLLC packet arrival, while the reasonable resource allocation ensures the reliability of URLLC and eMBB communication. © 2024 Lei Wang et al.

关键词： Resource allocation

来源：评论

学校读者我要写书评

暂无评论

Hybrid Implementation for Untrusted-node-based Quantum key Distribution network

arXiv

引用

arXiv 2025年

作者： Liu, Jingyang Zhou, Xingyu Ding, Huajian Xu, Jiaxin Zhang, Chunhui Li, Jian Wang, Qin Institute of quantum information and technology Nanjing University of Posts and Telecommunications Nanjing210003 China "Broadband Wireless Communication and Sensor Network Technology"Key Lab of Ministry of Education Ministry of Education Nanjing210003 China "Telecommunication and Networks"National Engineering Research Center NUPT Nanjing210003 China

Quantum key distribution (QKD) serves as a cornerstone of secure quantum communication, providing unconditional security grounded in quantum mechanics. While trusted-node networks have facilitated early QKD deployment, their vulnerability to node compromise underscores the need for untrusted-node architectures. Measurement-device-independent QKD (MDI-QKD) and twin-field QKD (TF-QKD) have emerged as leading candidates, addressing security vulnerabilities and extending transmission distances. Despite the wide adoptions in various fiber scaling, no integrated implementation of these two protocols has been demonstrated to date. Here, we present a hybrid system that seamlessly integrates TF-QKD and MDI-QKD into one untrusted-node-based architecture. Utilizing an efficient phase estimation method based on asymmetric interferometers, we convert twin-field global phase tracking to relative phase calibration, allowing near continuous running of both protocols. Experiments demonstrate secure finite-size key rates for sending-or-not-sending QKD and MDI-QKD over fiber distances of 150 to 431 km. The results align with theoretical simulations and show the ability to surpass the absolute repeaterless key capacity. Our work offers an unified framework for deploying multi-protocol QKD networks, laying the foundation for adaptable and scalab.e quantum infrastructures that can meet a wide range of security and performance needs. Copyright © 2025, The Authors. All rights reserved.

关键词： Quantum communication

来源：评论

学校读者我要写书评

暂无评论

Performance Analysis for Intrusion Target Detection in wireless sensor networks

引用

Chinese Journal of Electronics 2023年第4期20卷 725-729页

作者： FAN Gaojuan WANG Ruchuan HUANG Haiping SUN Lijuan XIAO Fu College of Computer Nanjing University of Posts and Telecommunications Nanjing China School of Computer and Information Engineering Henan University Kaifeng China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education of Jiangsu Province Nanjing China

Target detection and field surveillance are among the most prominent applications of wireless sensor networks. The quality of detection achieved by a sensor network can be quantified by evaluating the probability of detecting a mobile target crossing a sensing field. Detection probability of sensor nodes has been studied in sensor networks for many purposes such as quality of service and decision making. However, the sensing capabilities of sensors are affected by environmental factors in real deployment. This paper investigates the problem of detecting probability in a log-normal shadow fading environment. It presents an analytic method to evaluate the detection probability by at least $k$ sensors under practical considerations. Furthermore, we also shows that shadow fading makes significant influence in detection probability compared to unit disk sensing model through extensive simulation experiments.

关键词： Industries wireless communication Fading channels wireless sensor networks Surveillance Object detection Quality of service

来源：评论

学校读者我要写书评

暂无评论

Experimental demonstration of five-intensity measurement-device-independent quantum key distribution over 442 km

引用

Physical Review A 2023年第2期108卷 022605-022605页

作者： Jing-Yang Liu Xiao Ma Hua-Jian Ding Chun-Hui Zhang Xing-Yu Zhou Qin Wang Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing 210003 China and Telecommunication and Networks National Engineering Research Center Nanjing University of Posts and Telecommunications Nanjing 210003 China

Decoy-state measurement-device-independent quantum key distributions (MDI-QKD) can remove all the loopholes of detection devices and establish secure keys using weak coherent sources. To further extend the secure distance and enhance the key rate, Chau proposed a novel framework for decoy-state MDI-QKD that supports an arbitrary number of intensities and investigated its performance in detail [H. F. Chau, Phys. Rev. A 102, 012611 (2020)]. Here, we experimentally demonstrate its one kind, i.e., the five-intensity MDI-QKD protocol, and achieve a positive key rate over 442 km of ultralow-loss optical fibers. Our results verify that the five-intensity protocol outperforms four-intensity protocols in terms of both distance and key rate, setting a record distance for typical MDI-QKD.

关键词： Quantum cryptography

来源：评论

学校读者我要写书评

暂无评论

A Novel Miniaturized Wideband High-Gain Palm-Leaf Vivaldi Array Antenna

A Novel Miniaturized Wideband High-Gain Palm-Leaf Vivaldi Ar...

引用

2023 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM 2023

作者： Wang, Min Li, Xuan Xiang, Ceng Chen, Zhengchuan Chongqing University of Posts and Telecommunications Postdoctoral Res. Ctr. of Chongqing Key Lab. of Optoelectron. Info. Sensing and Transmiss. Technol. Chongqing400065 China Guilin University of Electronic Technology Guangxi Wireless Broadband Communication and Signal Processing Key Laboratory Guilin541004 China Chongqing University School of Microelectronics and Communication Engineering Chongqing400044 China

ISBN: (纸本)9798350336740

A novel miniaturized wideband high-gain palm-leaf Vivaldi array antenna is presented in this work. Firstly, a novel Vivaldi antenna element is designed. To miniaturize the element, three groups of arc-shaped slots of varying lengths are etched on the radiator and a transition structure from fan-shaped microstrip line to slotted line is introduced in the feeding structure. Besides, two rectangular slots are introduced to the both sides of the slotted line to suppress the sidelobe level. Then, in order to facilitate the cascading of elements, a 1×16 microstrip power division feed network with equal amplitude and same phase is designed. Finally, a wideband high-gain 4 × 4 Vivaldi array antenna is designed and simulated. Simulated results indicate that the relative bandwidth of the presented Vivaldi array antenna reaches 42.2% (3.6 GHz-5.6 GHz), and the gain reaches 15.8 dBi at 4.5 GHz. © 2023 IEEE.

关键词： Microwave antennas

来源：评论

学校读者我要写书评

暂无评论

Source monitoring twin-field quantum key distribution assisted with Hong-Ou-Mandel interference

引用

Physical Review Research 2023年第4期5卷 043179-043179页

作者： Ming-shuo Sun Wen-Lin Wang Xing-Yu Zhou Chun-Hui Zhang Qin Wang Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China Broadband Wireless Communication and Sensor Network Technology Key Lab of Ministry of Education NUPT Nanjing 210003 China Telecommunication and Networks National Engineering Research Center NUPT Nanjing 210003 China

Twin-field quantum key distribution (TF-QKD) can change the channel-loss dependence of key rates from O(η) to O(η) and thus significantly increase the secure key rate compared with other existing quantum key distribution protocols. However, it does not take the source security into account in most present TF-QKD protocols. Here, we propose to employ the Hong-Ou-Mandel interference to characterize the source security, i.e., to use the interference visibility to quantify the information leakage from detectable side channels of sources. Furthermore, we establish a corresponding theoretical model and calculate the final key rate, by using the three-intensity decoy-state method and taking finite-data-size effects into account. Consequently, by employing our present scheme, the secure transmission distance can be longer than 100 km under current experimental conditions, significantly surpassing present device-independent QKD systems.

关键词： Quantum communication Quantum cryptography Quantum protocols

来源：评论

学校读者我要写书评

暂无评论

A Review of the Evolutionary Algorithm Based VRP Problem 42

A Review of the Evolutionary Algorithm Based VRP Problem

引用

42nd Chinese Control Conference, CCC 2023

作者： Pan, Lili Hu, Bing Sun, Zhe Xu, Lei Gong, Guangfu Xie, Xiangpeng Sun, Zhixin Post Industry Technology Research and Development Center of the State Posts Bureau Nanjing University of Posts and Telecommunications Nanjing210023 China Nanjing University of Posts and Telecommunications Post Big Data Technology and Application Engineering Research Center of Jiangsu Province Nanjing210023 China Ministry of Education Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing210023 China Anhui Yougu Express Intelligent Technology Co. LTD Anhui Nanling241300 China

ISBN: (纸本)9789887581543

The problem of vehicle routing planning (VRP) has far-reaching influence, and is widely used in vehicle scheduling, industrial production, transportation, logistics and distribution. The study of VRP and its associated derivations has grown significantly in recent years. So, starting with the fundamental VRP, this paper categorizes the VRP based on its traits and real-world applications. It then in-depth analyses the capacity constrained VRP, time window VRP, batched delivery VRP, dynamic VRP, and stochastic demand VRP, and provides an update on each type of VRP's research. Additionally, a summary of the VRP problem-solving methods is provided. The study of evolutionary algorithms is the main topic of this paper, and the fundamental solution method is provided in accordance with the development of the algorithms. © 2023 Technical Committee on Control Theory, Chinese Association of Automation.

关键词： Vehicle routing

来源：评论

学校读者我要写书评

暂无评论

A WOA Based Switching PID Control for Overhead Crane 42

A WOA Based Switching PID Control for Overhead Crane

引用

42nd Chinese Control Conference, CCC 2023

作者： Yu, Haoyong Sun, Zhe Xu, Yuhua Xu, Lei Gong, Guangfu Xie, Xiangpeng Sun, Zhixin Post Industry Technology Research and Development Center of the State Posts Bureau Nanjing University of Posts and Telecommunications Nanjing210023 China Nanjing University of Posts and Telecommunications Post Big Data Technology and Application Engineering Research Center of Jiangsu Province Nanjing210023 China Nanjing University of Posts and Telecommunications Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing210023 China Anhui Yougu Express Intelligent Technology Co. LTD Anhui Nanling241300 China

ISBN: (纸本)9789887581543

Aiming at the problem that the amplitude of load oscillation is not easy to control in the movement process of overhead crane, this paper designs a switching PID control method based on whale optimization algorithm(WOA) to improve the performance of position control and anti-swing control for overhead crane. WOA is used to better adjust the parameters of PID controllers. The switching control is realized by a switching module, which defaults to the output of the Position PID Controller to provide control force for the trolley. When the absolute value of the load swing angle fed back by the crane system exceeds the warning value, the switching module immediately blocks the output of the Position PID Controller, and uses the Angle PID Controller to determine the control force. In addition, through theoretical analysis and simulation experiments under different conditions, the results verify the effectiveness of the WOA based switching control in position control and anti-swing control for overhead crane. Improve the efficiency and safety of overhead crane in practical industrial applications. © 2023 Technical Committee on Control Theory, Chinese Association of Automation.

关键词： Three term control systems

来源：评论

学校读者我要写书评

暂无评论

Vision-Assisted Cross-Modal Haptic Data Compression for Immersive communication

Vision-Assisted Cross-Modal Haptic Data Compression for Imme...

引用

IEEE Conference on wireless communications and networking

作者： Hang Lu Kaixiang Yang Wenqin Zhuang Mingkai Chen Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing China Digital Channel Department Limited JiangSu Branch China Life Property & Casualty Insurance Company Nanjing China

ISBN: (数字)9798350303582

ISBN: (纸本)9798350303599

Haptic data compression has gradually become a key issue for emerging immersive communications. However, it is challenging to achieve a trade-off between high perceptual quality and compression ratio in haptic data compression scheme. Inspired by the perspective of biological cognitive mechanism, we propose a cross-modal haptic compression scheme to improve the perception quality on VR devices in this paper. Since multimodal fusion is routinely employed to improve the ability of system in cognition, we assume that haptic codec is guided by visual semantics to strengthen data relevance in the coding process. We first design a multi-dimensional tactile feature fusion network (MTFFN), which extracts the multi-dimensional features in the material surface and maps them to infer a range of haptic coding parameters. Secondly, we provide second-order difference and linear interpolation to obtain an optimal criterion for the determination of codec parameters, which are inferred by the material surface characteristics. Finally, the simulation results reveal that our compression scheme can efficiently make a customized codec procedure for different materials, obtaining more than 17% improvement in terms of compression ratio with high immersive perceptual quality at the same time.

关键词： Visualization Codecs Sensitivity Simulation Semantics Data compression Feature extraction

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：