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International Symposium on Antennas, Propagation and EM Theory (ISAPE)

作者： Lichao Yang Science and Technology on Communication Information Security Control Laboratory No. 36 Research Institute of CETC

ISBN: (数字)9781665418126

ISBN: (纸本)9781665418133

In recent years, due to the emergence of ultrahigh resolution (UHR) radar systems, the bandwidth of radar has been increasing. However, conventional imaging algorithms have difficulties in the translational compensation of UHR inverse synthetic aperture radar (ISAR) data with high order range cell migration (RCM) and phase error. In this paper, a high-precision translational compensation method based on power flatness optimization (PFO) is proposed. The algorithm constructs the optimal criterion of power flatness and ensure the complete extraction of the prominent point energy. Then, the original data is compensated in the two-dimensional data domain through the prominent point phase inversion matrix. The results show that the proposed algorithm has significantly improved accuracy in the translational compensation of ultrahigh-resolution ISAR imaging compared with traditional algorithms.

关键词： Image resolution Energy resolution Imaging Bandwidth Radar imaging UHF antennas Radar antennas

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Interference Coordination technology of Ultra Dense Deployment Based on Clustering Algorithm

Interference Coordination Technology of Ultra Dense Deployme...

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IEEE International Conference on Power, Intelligent Computing and Systems (ICPICS)

作者： Haoyuan Wang Yue Tian Wenda Li Fujian Key Laboratory of Communication Network and Information Processing Xiamen University of Technology Xiamen China Department of Security and Crime Science University College London London United Kingdom

A clustering algorithm based Ultra Dense Deployment is proposed to address the problem of establishing a reasonable interference model and allocating ABS reasonably to minimize interference and maximize throughput in Ultra Dense Deployment. By analyzing the distribution pattern of low-power nodes in Ultra Dense Deployment, the interference generated by the cluster center is used to replace the interference of other nodes in the class. According to the principle of interference minimization, a distributed allocation scheme for ABS time slots based on K-means clustering is proposed, and a polling algorithm is used for user scheduling. Simulation results show that compared with the generalized interference model and traditional binary models, the interference calculation is more accurate, The throughput of the system is also higher.

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Joint Vehicle Pairing, Spectrum Assignment and Power control for Sum-Rate Maximization in NOMA-Based V2X Underlaid Cellular Networks

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IEEE Internet of Things Journal 2025年第12期12卷 22337-22349页

作者： Xue, Tong Zhang, Haixia Ding, Hui Yuan, Dongfeng Shandong University of Science and Technology College of Electronic and Information Engineering Shandong Qingdao266590 China Shandong Key Laboratory of Intelligent Communication and Sensing-Computing Integration Shandong Jinan250061 China Shandong University School of Control Science and Engineering Shandong Jinan250061 China

Vehicle-to-everything (V2X) underlaid cellular networks in underlaid mode suffers catastrophic co-channel interference caused by spectrum sharing, results in a reduced system sum-rate. To cope with this, this work studies a social-mobility-aware non-orthogonal multiple access (NOMA)-enabled V2X underlaid cellular network to mitigate the co-channel interference and improve the sum-rate. By jointly optimizing vehicle pairing and resources, a sum-rate maximization problem is formulated under the diverse quality of service requirements of both cellular and vehicular users. The formulated problem is proved to be a non-deterministic polynomial-time (NP)-hard problem, and is difficult to solve. As an alternative, we propose a NOMA-based joint vehicle pairing, spectrum assignment and power control algorithm (NOMA-JVP-SA-PCA), with which the original problem is decomposed into two disjoint subproblems, i. e., 1) joint vehicle pairing and spectrum assignment subproblem, and 2) power control subproblem. Dealing the first subproblem, we propose a heuristic social-mobility-aware vehicle pairing algorithm (HSMA-VPA) and a revised Kuhn-munkres-based spectrum assignment algorithm (KM-SAA) to acquire the vehicle pairing and spectrum assignment solutions. Then, solving the second subproblem, a closed-form power solution is obtained utilizing a three-dimensional geometric power control approach (3D-PCA). Finally, we solve the original problem through an iterative method. Simulation results show that the proposed NOMA-JVP-SA-PCA effectively enhances the sum-rate and outperforms the baseline algorithms around 24%-53% within a specific range. © 2014 IEEE.

关键词： Polynomial approximation

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Link reliability prediction for long-range underwater acoustic communications between gliders

Link reliability prediction for long-range underwater acoust...

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2021 IEEE/CIC International Conference on communications in China, ICCC Workshops 2021

作者： Zhang, Lan Feng, W. Li, Jianlong Zhu, Huijie Science and Technology on Communication Information Security Control Laboratory Jiaxing314000 China Research Institution of China Electronics Technology Group Corporation Jiaxing341000 China Zhejiang University Ocean College Zhoushan316021 China Zhejiang University College of Information Science and Electronic Engineering Hangzhou310027 China

ISBN: (纸本)9781665439442

Channel modeling and the prediction of the reliability of acoustic link is the key to a successful deployment of underwater acoustic networks (UAN). In this paper, we build a Bellhop-based simulation framework driven by the environmental data to assess and predict the quality of the long-range and low-frequency communication links between the unmanned platforms in the deep ocean. The environmental data is measured in the South China Sea Experiment 2020 (SCSEx20). Results of channel modeling and link reliability prediction are reported in terms of the estimated channel impulse response (CIR), signal-to-noise ratio (SNR), and bit rate error (BER). The analysis shows how the communication performance of the physical level is dominated by the environmental data, aiming at evaluating the communication performance, and correlating the variation of the environmental conditions to the reliability of the entire communication link. © 2021 IEEE.

关键词： Underwater acoustic communication

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Edge Node Cooperation and Resource Sharing in Mobile Edge Computing

Edge Node Cooperation and Resource Sharing in Mobile Edge Co...

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International Conference on Wireless communications and Signal Processing (WCSP)

作者： Anqi Meng Xiaozheng Gao Yuting Huang Zhan Xu Jiadong Shang Key Laboratory of Modern Measurement and Control Technology Ministry of Education Beijing Information Science and Technology University Beijing China Key Laboratory of Information and Communication Systems Ministry of Information Industry Beijing Information Science and Technology University Beijing China School of Information and Electronics Beijing Institute of Technology Beijing China Beijing Institute of Remote Sensing Equipment Beijing China

As edge computing undergoes ongoing development propelled by the advancements in Internet of Things and mobile communication technologies, the issue of edge node cooperation and resource sharing needs to be investigated. In this paper, the issue of edge node cooperation and resource sharing is modeled as a two-layer framework. In the lower layer, a heuristic matching algorithm between users and edge nodes is developed, and a resource sharing algorithm among edge nodes in the same coalition is proposed. In the upper layer, a coalition formation algorithm is designed based on the coalition game. Simulation results show that the proposed algorithms reduce the network cost effectively compared with non-cooperative scheme.

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Domain Generalization for Cross-Receiver Radio Frequency Fingerprint Identification

arXiv

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arXiv 2024年

作者： Zhang, Ying Li, Qiang Liu, Hongli Yang, Liu Yang, Jian School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu611731 China Beijing Institute of Technology Beijing100081 China Laboratory of Electromagnetic Space Cognition and Intelligent Control Beijing100083 China

Radio Frequency Fingerprint Identification (RFFI) technology uniquely identifies emitters by analyzing unique distortions in the transmitted signal caused by non-ideal hardware. Recently, RFFI based on deep learning methods has gained popularity and is seen as a promising way to address the device authentication problem for Internet of Things (IoT) systems. However, in cross-receiver scenarios, where the RFFI model is trained over RF signals from some receivers but deployed at a new receiver, the alteration of receiver's characteristics would lead to data distribution shift and cause significant performance degradation at the new receiver. To address this problem, we first perform a theoretical analysis of the cross-receiver generalization error bound and propose a sufficient condition, named Separable Condition (SC), to minimize the classification error probability on the new receiver. Guided by the SC, a Receiver-Independent Emitter Identification (RIEI) model is devised to decouple the received signals into emitter-related features and receiver-related features and only the emitter-related features are used for identification. Furthermore, by leveraging federated learning, we also develop a FedRIEI model to eliminate the need for centralized collection of raw data from multiple receivers. Experiments on two real-world datasets demonstrate the superiority of our proposed methods over some baseline methods. © 2024, CC BY-NC-ND.

关键词： Federated learning

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A lightweight and high-precision approach for bulky JavaScript engines fuzzing

A lightweight and high-precision approach for bulky JavaScri...

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IEEE International Conference on Trust, security and Privacy in Computing and communications (TrustCom)

作者： Lianpei Zhou Xi Xiao Guangwu Hu Hao Li Xiangbo Wu Tao Zhou International Graduate School Tsinghua University Shenzhen China School of Computer Science Shenzhen Institute of Information Technology Shenzhen Guangdong China Science and Technology on Communication Networks Laboratory Shijiazhuang China Guangdong Provincial Key Laboratory of Cyber and Information Security Vulnerability Research Guangzhou China

ISBN: (数字)9798350381993

ISBN: (纸本)9798350382006

Traditional coverage-based fuzzing gives equal attention to every part of a code. Despite much progress, we observe that existing schemes still not comprehensively use the coverage feedback mechanism when fuzzing bulky JavaScript engines because of severe path collisions. To improve the precision of coverage feedback and target the vulnerable JIT compiler of Javascript engines, we presented our fuzzer, called LF(Light Fuzzer), a lightweight and high-precision fuzzer for bulky JavaScript engines fuzzing. First, LF advocates a technique to confine instrumentation to the JIT-related "critical functions" to mitigate collisions. Additionally, LF utilizes static analysis to establish dominant relationships between critical functions. Lastly, LF incorporates seed scheduling with feedback information of control flow at the function level to dynamically target JIT. These combined strategies make LF a lightweight and high-precision fuzzer for fuzzing bulky JavaScript engines. In our evaluation, LF outperforms the state-of-art coverage-guided JavaScript fuzzer DIE in different coverage types, and LF is also more effective in triggering unique crashes compared to DIE.

关键词： Privacy Codes Instruments Static analysis Fuzzing Dynamic scheduling Computer crashes

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The Design of A Wide Bandwidth Tightly Coupled Array Antenna

The Design of A Wide Bandwidth Tightly Coupled Array Antenna

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IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)

作者： Feng-Si Xie Li-Li Sheng Guo Liu Wei-ping Cao School of Information and Communication GuiLin University of Electronic Technology Guilin China School of Information and Communication GuiLin University of Aerospace Technology Guilin China Science and Technology on Electronic Information Control Laboratory School of Information and Communication Chengdu China

We present a wideband Tightly Coupled Dipole Array (TCDA) with integrated balun and novel parasitic superstrate capable structure. The Array achieves over 7:1 bandwidth (0.25-1.81GHz) with VSWR < 3. The height of the array is $\boldsymbol{0.09}\boldsymbol{\lambda}$ at the lowest frequency band. Compared with conventional TCDAs, the integrated balun and dipoles (radiating elements) are printed on a PCB, which is low-cost and light weight. The Array can be applied to small ultra-wideband phased antenna array system.

关键词： Phased arrays Dipole antennas Antenna theory Baluns Ultra wideband antennas Broadband communication Wideband

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Secure Vehicular Visible Light communications via STAR-RIS: Secrecy Capacity Evaluation

Secure Vehicular Visible Light Communications via STAR-RIS: ...

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communications and Networking (MeditCom), IEEE International Mediterranean Conference on

作者： Aicha Meghraoui Mohamed L. Tayebi Mokhtar Besseghier Tu Dac Ho LTTNS Laboratory University of Djillali Liabes Sidi bel Abbes Algeria University of Mustapha Stambouli Mascara Algeria Department of Information Security and Communication Technology Norwegian University of Science and Technology Department of Electrical Engineering UiT The Arctic University of Norway

ISBN: (数字)9798350309485

ISBN: (纸本)9798350309492

This paper evaluates the performance of secrecy capacity, it is expressed as the difference between the channel capacity for the intended user and the channel capacity for the eavesdropper, in vehicle to vehicle (V2V) visible light communications (VLC) systems, we propose using simultaneously transmitting and reflecting RIS (STAR-RIS). This approach has capability of providing full-space security enhancement by relaxing line-of-sight constraints, combat eavesdropping and integrity attacks from the full space. We employed a realistic channel model to analyze the secrecy capacity of V-VLC system. Additionally, we investigated how different system parameters, including positions of eavesdropper vehicles and transmit power, affect the system’s security performance. The results demonstrate that strategic deployment of the STAR-RIS enables enhanced the security in V-VLC at road intersections, and protect the transfer of information from being accessed or intercepted by potential eavesdroppers. To the best of our knowledge, this is the first paper that examines the security of vehicular VLC through STAR-RIS.

关键词： Channel capacity Roads Vehicular ad hoc networks Line-of-sight propagation Bandwidth Safety security

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Secrecy Performance Analysis of Multi-Functional RIS-Assisted NOMA Networks

arXiv

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arXiv 2024年

作者： Pei, Yingjie Ni, Wanli Xu, Jin Yue, Xinwei Tao, Xiaofeng Niyato, Dusit School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing100876 China Department of Electronic Engineering Tsinghua University Beijing100084 China Beijing National Research Center for Information Science and Technology Beijing100084 China Key Laboratory of Information and Communication Systems Ministry of Information Industry China Key Laboratory of Modern Measurement & Control Technology Ministry of Education Beijing Information Science and Technology University Beijing102206 China College of Computing and Data Science Nanyang Technological University Singapore639798 Singapore

Although reconfigurable intelligent surface (RIS) can improve the secrecy communication performance of wireless users, it still faces challenges such as limited coverage and double-fading effect. To address these issues, in this paper, we utilize a novel multi-functional RIS (MF-RIS) to enhance the secrecy performance of wireless users, and investigate the physical layer secrecy problem in non-orthogonal multiple access (NOMA) networks. Specifically, we derive the secrecy outage probability (SOP) and secrecy throughput expressions of users in MF-RIS-assisted NOMA networks with external and internal eavesdroppers. The asymptotic expressions for SOP and secrecy diversity order are also analyzed under high signal-to-noise ratio (SNR) conditions. Additionally, we examine the impact of receiver hardware limitations and error transmission-induced imperfect successive interference cancellation (SIC) on the secrecy performance. Numerical results indicate that: i) under the same power budget, the secrecy performance achieved by MF-RIS significantly outperforms active RIS and simultaneously transmitting and reflecting RIS;ii) with increasing power budget, residual interference caused by imperfect SIC surpasses thermal noise as the primary factor affecting secrecy capacity;and iii) deploying additional elements at the MF-RIS brings significant secrecy enhancements for the external eavesdropping scenario, in contrast to the internal eavesdropping case. Copyright © 2024, The Authors. All rights reserved.

关键词： Budget control

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