检索结果-内蒙古大学图书馆

Joint Optimization of Power Control and Receive Beamforming for Security Enhancement in SGF-NOMA Systems: A Distributed MADRL Approach

引用

IEEE Transactions on Vehicular Technology 2025年

作者： Luo, Mofan Zhou, Yuchen Yang, Long Lv, Lu Zhang, Zheng Yu, Fei Richard Nallanathan, Arumugam Xidian University State Key Laboratory of Integrated Services Networks Xi'an710071 China Carleton University Department of Systems and Computer Engineering OttawaONK1S 5B6 Canada Queen Mary University of London School of Electronic Engineering and Computer Science London United Kingdom Kyung Hee University Department of Electronic Engineering Gyeonggi-do Yongin-si17104 Korea Republic of

To enhance the physical layer security in semi-grant-free non-orthogonal multiple access systems, this work develops a strategy for simultaneous transmission by grant-free devices (GFDs). The proposed strategy utilizes the interference of active GFDs as coverts to safeguard the legitimate transmision of the grant-based device from the potential eavesdropping of inactive GFDs. By utilizing the centralized teacher with decentralized student framework, we develop a joint power control and receive beamforming scheme employing multi-agent deep reinforcement learning, which requires only the partial observation and implements in a distributed manner. Numerical results show that the proposed strategy surpasses both non-orthogonal multiple access and orthogonal multiple access benchmarks and achieves the secrecy performance close to its global observation counterpart. © 1967-2012 IEEE.

关键词： Beamforming

来源：评论

学校读者我要写书评

暂无评论

Architecture to manage Internet of Things Data using Blockchain and Fog Computing 19

Architecture to manage Internet of Things Data using Blockch...

引用

Proceedings of the 4th International Conference on Big Data and Internet of Things

作者： Said El Kafhali Chorouk Chahir Mohamed Hanini Khaled Salah Computer Networks Mobility and Modeling laboratory FST Hassan Ist University Settat Morocco Electrical and Computer Engineering Department Khalifa University of Science and Technology Abu Dhabi UAE

ISBN: (纸本)9781450372404

In this paper, we propose a novel architecture that utilizes features of Blockchain, fog computing, and cloud computing to manage IoT data. Blockchain allows to have a distributed peer-to-peer network in which non-trusting participants can interact with each other without a trusted intermediary or third party. We evaluate how this mechanism works to face the challenges of IoT with respect to multiple accessibility to IoT devises. We consider a Blockchain architecture in presence of edge computing layer. With fog or fog computing, the sensitive data can be analyzed locally instead of sending it to the cloud for analysis. Edge nodes can also keep track and control of the IoT devices that collect, analyze and store data. We show that this control can be better executed when Software Defined Network (SDN) and Network Functions Virtualization (NFV) are integrated into our process for optimal resource management. In this paper, we present our system architecture with a detailed description of the different interactions. We remark that the integration of Blockchain, IoT, and edge computing when coupled with SDN and NFV-enabled cloud infrastructure can bring to more superior and efficient platform for accessing, managing, and processing the huge influx of IoT data.

关键词： Blockchain

来源：评论

学校读者我要写书评

暂无评论

Proof of Concept Blockchain-based Voting System 19

Proof of Concept Blockchain-based Voting System

引用

Proceedings of the 4th International Conference on Big Data and Internet of Things

作者： Aicha Fatrah Said El Kafhali Abdelkrim Haqiq Khaled Salah Computer Networks Mobility and Modeling laboratory FST Hassan Ist University Settat Morocco Electrical and Computer Engineering Department Khalifa University of Science and Technology Abu Dhabi UAE

ISBN: (纸本)9781450372404

Blockchain is becoming the missing puzzle to solve many digital services problems these days. In this paper, we propose a design and implementation of a Blockchain-based voting system that can be used in national elections. In the paper, we argue that our Blockchain-based voting system is more secure, reliable and it has the ability to protect voter privacy which will help boost the number of voters and their trust in the electoral system as well as reducing considerably the cost of national elections.

关键词： Blockchain

来源：评论

学校读者我要写书评

暂无评论

Redefining Information Freshness: AoGI for Generative AI in 6G networks

arXiv

引用

arXiv 2025年

作者： Xiao, Yuquan Du, Qinghe Cheng, Wenchi Karagiannidis, George K. Nallanathan, Arumugam Guizani, Mohsen School of Information and Communications Engineering Xi’an Jiaotong University Xi’an710049 China State Key Laboratory of Integrated Services Networks Xidian University Xi’an710071 China Department of Electrical and Computer Engineering Aristotle University of Thessaloniki Greece School of Electronic Engineering and Computer Science Queen Mary University of London LondonE1 4NS United Kingdom Abu Dhabi United Arab Emirates

Generative Artificial Intelligence (GenAI) is playing an increasingly important role in enriching and facilitating human life by generating various useful information, of which real-time GenAI is a significant part and has great potential in applications such as real-time robot control, automated driving, augmented reality, etc. There are a variety of information updating processes in real-time GenAI, and the age of information (AoI) is an effective metric for evaluating information freshness. However, due to the diversity and generativity of information in real-time GenAI, it may be incompatible to directly use existing information aging metrics to assess its timeliness. In this article, we introduce a new concept called Age of Generative Information (AoGI) to evaluate the freshness of generative information, which takes into account the information delay caused not only by sampling and transmission, but also by computation. Furthermore, since real-time GenAI services are often supported by mobile-edge-cloud (MEC) collaborative computing in 6G networks and some of the generated information is privacy sensitive, it is recommended that the identities of edge and cloud should always be verified in a zero-trust manner. We introduce the concept of Age of Trust (AoT) to characterise the decay process of their trust level. We also discuss the optimisations of these evolved information aging metrics, focusing on the impact of dynamic external conditions, including wireless environments and limited computational resources. Finally, we highlight several open challenges in providing timeliness guarantees for real-time GenAI services. Copyright © 2025, The Authors. All rights reserved.

关键词： Industrial robots

来源：评论

学校读者我要写书评

暂无评论

Behavior-aware Account De-anonymization on Ethereum Interaction Graph

arXiv

引用

arXiv 2022年

作者： Zhou, Jiajun Hu, Chenkai Chi, Jianlei Wu, Jiajing Shen, Meng Xuan, Qi The Institute of Cyberspace Security College of Information Engineering Zhejiang University of Technology Hangzhou310023 China The Hangzhou Research Institute Xidian University Hangzhou311231 China The School of Computer Science and Engineering Sun Yat-sen University Guangzhou510006 China The School of Cyberspace Science and Technology Beijing Institute of Technology Beijing100081 China Shenzhen518066 China PCL Research Center of Networks and Communications Peng Cheng Laboratory Shenzhen518000 China Hangzhou310056 China

Blockchain technology has the characteristics of decentralization, traceability and tamper-proof, which creates a reliable decentralized trust mechanism, further accelerating the development of blockchain finance. However, the anonymization of blockchain hinders market regulation, resulting in increasing illegal activities such as money laundering, gambling and phishing fraud on blockchain financial platforms. Thus, financial security has become a top priority in the blockchain ecosystem, calling for effective market regulation. In this paper, we consider identifying Ethereum accounts from a graph classification perspective, and propose an end-to-end graph neural network framework named Ethident, to characterize the behavior patterns of accounts and further achieve account de-anonymization. Specifically, we first construct an Account Interaction Graph (AIG) using raw Ethereum data. Then we design a hierarchical graph attention encoder named HGATE as the backbone of our framework, which can effectively characterize the node-level account features and subgraph-level behavior patterns. For alleviating account label scarcity, we further introduce contrastive self-supervision mechanism as regularization to jointly train our framework. Comprehensive experiments on Ethereum datasets demonstrate that our framework achieves superior performance in account identification, yielding 1.13% ∼ 4.93% relative improvement over previous state-of-the-art. Furthermore, detailed analyses illustrate the effectiveness of Ethident in identifying and understanding the behavior of known participants in Ethereum (e.g. exchanges, miners, etc.), as well as that of the lawbreakers (e.g. phishing scammers, hackers, etc.), which may aid in risk assessment and market regulation. Copyright © 2022, The Authors. All rights reserved.

关键词： Blockchain

来源：评论

学校读者我要写书评

暂无评论

Photonic-based fully integrated microwave instantaneous frequency measurement

Photonic-based fully integrated microwave instantaneous freq...

引用

Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Yuansheng Tao Zihan Tao Haowen Shu Ming Jin Xingjun Wang State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University Beijing China Frontier Science Center for Nano-optoelectronics Peking University Beijing China Peking University Yangtze Delta Institute of Optoelectronics Nantong China Peng Cheng Laboratory Shenzhen China

We demonstrate the first photonic-based fully integrated microwave instantaneous frequency measurement system, showing a wideband measurement range of 2–34 GHz and an ultralow estimation error of 10.85 MHz.

ISBN: (纸本)9781957171005

关键词： Microwave measurement Estimation error Electronic warfare Measurement uncertainty Asia Microwave communication Frequency estimation

来源：评论

学校读者我要写书评

暂无评论

Disease transmission in dynamic social networks constructed by reinforcement learning-driven preventive game

引用

Chaos, Solitons & Fractals 2025年 199卷

作者： Yinuo Qian Dawei Zhao Chengyi Xia School of Control Science and Engineering Tiangong University Tianjin 300387 China Key Laboratory of Computing Power Network and Information Security Ministry of Education Shandong Computer Science Center (National Supercomputer Center in Jinan) Qilu University of Technology (Shandong Academy of Sciences) Jinan 250014 China Shandong Provincial Key Laboratory of Computer Networks Shandong Fundamental Research Center for Computer Science Jinan 250014 China School of Artificial Intelligence Tiangong University Tianjin 300387 China

Reinforcement learning delves into the intrinsic behaviors of multi-agents, while complex networks reveal their interactive relationships. In real life, an individual can be considered as a sophisticated multi-agent, whose behavioral choices are influenced by a myriad of factors. When contagious diseases penetrate a population, the adoption of preventive measures represents a manifestation of behavioral selection. This paper introduces reinforcement learning into the multi-agent decision within the network, leveraging the Q-learning algorithm to train individual decision-making. At each time step, individuals select the next preventive strategy based on their utility and strategies, and these choices subsequently alter the network structure, thereby influencing the prevalence of the disease. In addition, the incorporation of additional government incentives prompts individuals to opt for advanced preventive strategies, effectively containing disease transmission within the population. The construction of this model not only showcases the co-evolutionary process between network structure and disease transmission but also validates its efficacy through theoretical analysis and applications in real-world networks, offering a novel perspective towards the epidemic control.

关键词：

来源：评论

学校读者我要写书评

暂无评论

An Ultra-compact Broadband TE-pass Nanofocusing Structure

An Ultra-compact Broadband TE-pass Nanofocusing Structure

引用

2020 Asia Communications and Photonics Conference, ACP 2020 and International Conference on Information Photonics and Optical Communications, IPOC 2020

作者： Zhu, Kejian Pengfei, Xu Sun, Pengfei Liu, Xingpeng Li, Haiou Zhou, Zhiping Nano-optoelectronics Frontier Center of Ministry of Education Peking University Beijing100871 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University Department of Electronics Beijing100871 China Guangxi Key Laboratory of Precision Navigation Technology and Application Guilin University of Electronic Technology Guilin China

We propose a broadband structure which integrates polarization and nanofocusing functions into a single device with 3.8x4 μm footprint. The bandwidth is over 200 nm with insert loss (IL) smaller than 1.68 dB. © ...

ISBN: (纸本)9781943580828

关键词：

来源：评论

学校读者我要写书评

暂无评论

Malus-metasurface-assisted polarization multiplexing

引用

Light(Science & Applications) 2020年第1期9卷 1038-1046页

作者： Liangui Deng Juan Deng Zhiqiang Guan Jin Tao Yang Chen Yan Yang Daxiao Zhang Jibo Tang Zhongyang Li Zile Li Shaohua Yu Guoxing Zheng Hongxing Xu Cheng-Wei Qiu Shuang Zhang Electronic Information School Wuhan University430072 WuhanChina NOEIC State Key Laboratory of Optical Communication Technologies and NetworksWuhan Research Institute of Posts&Telecommunications430074 WuhanChina School of Physics and Technology Wuhan University430072 WuhanChina Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117583Singapore Integrated Circuit Advanced Process Center Institute of MicroelectronicsChinese Academy of Sciences100029 BeijingChina School of Physics&Astronomy University of BirminghamBirmingham B152TTUK

Polarization optics plays a pivotal role in diffractive,refractive,and emerging flat optics,and has been widely employed in contemporary optical industries and daily *** polarization manipulation leads to robust control of the polarization direction of ***,polarization control has been studied largely independent of the phase or intensity of ***,we propose and experimentally validate a Malus-metasurface-assisted paradigm to enable simultaneous and independent control of the intensity and phase properties of light simply by polarization *** orientation degeneracy of the classical Malus’s law implies a new degree of freedom and enables us to establish a one-to-many mapping strategy for designing anisotropic plasmonic nanostructures to engineer the Pancharatnam–Berry phase profile,while keeping the continuous intensity modulation *** proposed Malus metadevice can thus generate a near-field greyscale pattern,and project an independent far-field holographic image using an ultrathin and single-sized *** concept opens up distinct dimensions for conventional polarization optics,which allows one to merge the functionality of phase manipulation into an amplitudemanipulation-assisted optical component to form a multifunctional nano-optical device without increasing the complexity of the *** can empower advanced applications in information multiplexing and encryption,anti-counterfeiting,dual-channel display for virtual/augmented reality,and many other related fields.

关键词： optics enable unchanged

来源：评论

学校读者我要写书评

暂无评论

UAV Placement Optimization for Internet of Medical Things 16

UAV Placement Optimization for Internet of Medical Things

引用

16th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2020

作者： Tang, Chaogang Zhu, Chunsheng Wei, Xianglin Rodrigues, Joel J. P. C. Guizani, Mohsen Jia, Weijia School of Computer Science and Technology China University of Mining and Technology Xuzhou China SUSTech Institute of Future Networks Southern University of Science and Technology Shenzhen China Pcl Research Center of Networks and Communications Peng Cheng Laboratory Shenzhen China Nanjing Telecommunication Technology Research Institute Nanjing China Federal University of Piaui Teresina - Pi Brazil Instituto de Telecomunicacoes Portugal Department of Computer Science and Engineering Qatar University Qatar Faculty of Science and Technology University of Macau Taipa China

ISBN: (纸本)9781728131290

Internet of Medical Things (IoMT), intended for real-time health monitoring, are generating quantity of health data such as electrocardiogram, oxygen saturation, and blood pressure every second. The captured data should be processed and analyzed in a delay sensitive way which is vital to the survival rate for cardiovascular and cerebrovascular diseases. In this regard, Unmanned Aerial Vehicles (UAVs) have already demonstrated the enormous potentials. To begin with, due to better line-of-sight, wider communication and more flexible on-demand deployment, UAVs can realize seamless wireless connection to IoMT. Furthermore, UAVs can act as fog nodes to provision services for IoMTs such as task performing and data analysis. We in this paper focus on a sub-problem, i.e., the placement of UAVs over the serving area when they function as fog nodes. In the airborne fog computing, the placement of UAVs has an important influence on energy consumption and exploration area, let alone the communication coverage of the personal health devices on the ground. Therefore, we in this paper propose a particle swarm optimization (PSO) based algorithm to optimize the UAV placement over the serving area for the IoMT devices. We have conducted extensive simulations to evaluate it. The results show that our approach can significantly reduce the number of UAVs needed to deploy while considering the communication coverage and other factors. © 2020 IEEE.

关键词： Health

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：