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2012 5th Global Symposium on Millimeter-Waves, GSMM 2012

作者： Yang, Chun-Yu Meng, Fan-Yi Hua, Jun Chen, Mei-Liang Department of Microwave Engineering Harbin Institute of Technology Harbin 150001 China Science and Technology on Communication Information Security Control Laboratory Zhejiang China

ISBN: (纸本)9781467313032

In this paper, frequency selective surface (FSS) with relative zero-phase shift is realized and characterized. The FSS unit cell is designed by adding cross aperture to the cross loop slot at its center, and the four ends are placed by Y-shaped slots. Compared with normal FSS, the FSS with the relative zero-phase shift avoid the aberrance of the main lobe direction on the radiation pattern of antenna, when the FSS is designed for the radome. Numerical simulations are carried out to validate wider bandwidth and better angle stability. It is a miracle that the epsilon-near-one(ENO) metamaterial properties are presented, so the screen of these FSSs have many properties similar to air. The near-field and far-field are almost not affected by the screen for the cylindrical wave. © 2012 IEEE.

关键词： Metamaterials

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A Latency-offset Online Trajectory Planner based on Successive Convex Approximation

A Latency-offset Online Trajectory Planner based on Successi...

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2022 IEEE International Conference on Unmanned Systems, ICUS 2022

作者： Li, Yiming Jiang, Bin Yang, Junan Wang, Jian Li, Beibei Huang, Keju Shao, Kun College of Electronic Engineering National University of Defense Technology Hefei China Science and Technology on Communication Information Security Control Laboratory Jiaxing China

ISBN: (数字)9781665484565

ISBN: (纸本)9781665484565

An online trajectory planner permits autonomous unmanned vehicles to maneuver in a changing mission scenario and varying environment. However, in real-time online plannings, task performance, completeness and accuracy is seriously challenged by the latency during mission planning and scheme computation. To address the issue, we propose a latency-correcting online trajectory planner based on successive convex approximation (SCA), which is aiming at offset the latency in the planning. In this work, two types of latency are considered, i.e., a prior known variable and computation, where the latter one poses a problem. With this, we devise an online latency method to predict computing latency by conducting time complexity analysis. The experiment is to design an optimal UAV trajectory to serve the eavesdropping of an uncooperative emitter. The results showed this harmful latency effect, and then demonstrated the improved accuracy and task performance of the proposed planner. © 2022 IEEE.

关键词： Trajectories

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A wideband zero index metamaterial lens for directive emission based on Z-shaped meta-atom

A wideband zero index metamaterial lens for directive emissi...

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2012 5th Global Symposium on Millimeter-Waves, GSMM 2012

作者： Lv, Yue-Long Meng, Fan-Yi Hua, Jun Chen, Mei-Liang Department of Microwave Engineering Harbin Institute of Technology Harbin 150001 China Science and Technology on Communication Information Security Control Laboratory Zhejiang China

ISBN: (纸本)9781467313032

In this paper, a zero index metamaterial lens (ZIML) based on Z-shaped meta-atom is proposed to achieve directive emission. Z-shaped meta-atom is implement as the unit cell of the ZIML to achieve near zero permittivity for wideband. Patch antennas work at, respectively, 7.27 GHz, 8.02 GHz and 9.14GHz are used to test the directivity enhancement of the ZIML. Simulation results demonstrate that the ZIML we designed is able to significantly improve the directivity of the patch antennas. © 2012 IEEE.

关键词： Microstrip antennas

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Post-Synthesis Simulation Based on None Project Mode of Vivado

Post-Synthesis Simulation Based on None Project Mode of Viva...

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International Conference on information science and control Engineering (ICISCE)

作者： Wenhua Ye Huan Li Science Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang China No.36 Research Institute of CETC Jiaxing Zhejiang China

ISBN: (纸本)9781509025367

Xilinx FPGA design tools Vivado support project based mode and none project mode, the project based mode is used by most of the designs with powerful graphical interface IDE, but none project mode also has its unique advantages and magical effect, this paper presents a method of post-synthesis simulation based on none project mode of Vivado, which can find errors early, such as the simulation result of module (pre-synthesis) is correct, but there are errors when added to compile the project or on board debugging, thus this method can save development time and improve work efficiency.

关键词： Load modeling Field programmable gate arrays Simulation Debugging Clocks Hardware design languages Data models

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A Robust and Scalable One-PUF-to-Many Authentication and Key Agreement Scheme for Mobile communication Network

A Robust and Scalable One-PUF-to-Many Authentication and Key...

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2023 International Conference on Networking and Network Applications, NaNA 2023

作者： Wang, Yiteng Ren, Zhe Wang, Wei School of Cyber Engineering Xidian University Xi'an China The 36th Research Institute of China Electronics Technology Group Corporation Science and Technology on Communication Information Security Control Laboratory Jiaxing China

ISBN: (纸本)9798350327380

Under the multi-cloud environment of mobile communication networks, unattended terminals would possibly be involved in different tasks. For the network security, terminals should be authenticated by cloud service providers (CSPs) before being involved in various tasks. As a new cryptology primitive, Physical Unclonable Function (PUF) can be served as a trusted root for unattended terminals and provide security property against physical attacks, based on which physical secure authentication can be executed. However, applying the PUF directly to the multi-cloud environment caused the authentication scheme to rely on the storage of the primitive challenge-response pairs, and there was a single point of failure problem. To solve these issues, we propose an authentication and key agreement scheme named RSOPM for secure authentication between terminals and CSPs. Specifically, mutual authentication without the storage of the primitive challenge-response pairs on the cloud is enabled by exploiting the trapdoor collision property of the chameleon hash function. Moreover, the redactable blockchain containing distributed registration information makes a terminal register only once, and then the terminal gains access to the various CSPs. The security properties are discussed to show our scheme resists various attacks. The results of experiments show that the overall delay is reduced by 33 % compared to other multi-cloud authentication schemes. © 2023 IEEE.

关键词： Authentication

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Hybrid Programming Based on Matlab Engine technology

Hybrid Programming Based on Matlab Engine Technology

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International Conference on Computer sciences and Applications (CSA)

作者： Huan Li Wenhua Ye Science Technology on Communication Iinformation Security Control Laboratory Jiaxing Zhejiang China Science Technology on Communication Iinformation Security Control Laboratory No.36 Research Institute of CETC Jiaxing Zhejiang China

In this paper, a dual language hybrid programming based on Matlab engine technology and example of implementation are described. A lot of Matlab functions can be used by this technology effectively, which reducing the workload of the program, also it can inherite the excellent VC program interface, therefore it is a kind of good hybrid program design method for debugging hardware and software interfaces, programming Human Machine Interface, etc.

关键词： MATLAB Engines Programming Libraries Arrays Prototypes

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The identification algorithm of network key role based on behavior accumulation

The identification algorithm of network key role based on be...

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10th International Conference on Wireless communications, Networking and Mobile Computing (WiCOM 2014)

作者： Xiaofeng Xu Xiao Li Science and Technology on Communication Information Security Control Laboratory Jiaxing China Chinese Electronic Technology Group Corporation No.36 Institute Jiaxing China

ISBN: (纸本)9781510804166

Role identification for network user plays a very important role in function and behaviour network analysis against criminal groups. Therefore, a network key role identification algorithm based on behaviour accumulation is proposed in the paper. Firstly, behaviour attribution of node (user) in network instance is extracted in the algorithm, description and abstraction of user behaviour by vector mode is performed, simultaneously, K mean algorithm is adopted to make clustering analysis for user behaviour; on the basis of conditions described as above, Hybrid Ant-Colony Algorithm (HBACA) is modified to search relationships between variety of grouping sets in the network instance, and identify each user role in the performing process of network instance. Simulation result shows that the algorithm can extract internal relations of communication behaviours between each network member, in order to obtain key role in a specific network instance.

关键词： Clustering Analysis Hybrid Ant-Colony Algorithms Network Behaviours Role Identification algorithms Cluster Analysis Network Abstraction

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Spectrum Sensing Based on Deep Learning Classification for Cognitive Radios

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China communications 2020年第2期17卷 138-148页

作者： Shilian Zheng Shichuan Chen Peihan Qi Huaji Zhou Xiaoniu Yang Science and Technology on Communication Information Security Control Laboratory Jiaxing 314033China State Key Laboratory of Integrated Service Networks Xidian UniversityXi’an 710071China Key Laboratory of Intelligent Perception and Image Understanding Ministry of Education of ChinaXidian UniversityXi’an 710071China

Spectrum sensing is a key technology for cognitive *** present spectrum sensing as a classification problem and propose a sensing method based on deep learning *** normalize the received signal power to overcome the effects of noise power *** train the model with as many types of signals as possible as well as noise data to enable the trained network model to adapt to untrained new *** also use transfer learning strategies to improve the performance for real-world *** experiments are conducted to evaluate the performance of this *** simulation results show that the proposed method performs better than two traditional spectrum sensing methods,i.e.,maximum-minimum eigenvalue ratio-based method and frequency domain entropy-based *** addition,the experimental results of the new untrained signal types show that our method can adapt to the detection of these new ***,the real-world signal detection experiment results show that the detection performance can be further improved by transfer ***,experiments under colored noise show that our proposed method has superior detection performance under colored noise,while the traditional methods have a significant performance degradation,which further validate the superiority of our method.

关键词： spectrum sensing deep learning convolutional neural network cognitive radio spectrum management

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Network node importance measurement method based on vulnerability analysis 4th

Network node importance measurement method based on vulnerab...

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4th International Conference on Computer Engineering and Networks, CENet2014

作者： Li, Yahui Yang, Hongwa Xie, Kai Science and Technology on Communication Information Security Control Laboratory Jiaxing314000 China Northern Electronic Instrument Institute Beijing100191 China

ISBN: (纸本)9783319111032

As to select the important nodes from network, the key problems are to determine the basis and quantitative standard of evaluating node importance. This chapter proposes the measurement method of network node importance from the aspect of vulnerability, including topological structure vulnerability evaluation standard based on degree distribution, betweenness centrality, round-robin betweenness centrality, and extension degree distribution;and application vulnerability evaluation standard based on maximum load link and information value. The experiment results show that the measure standard of network node importance based on extension degree distribution not only reflects the value of the node itself, but comprehensively considers indirect effect of node to network;it can well describe the differences among nodes in a network, and time complexity of the algorithm is smaller. © Springer International Publishing Switzerland 2015.

关键词： Topology

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Bitstream Protocol Classification Mechanism Based on Feature Extraction

Bitstream Protocol Classification Mechanism Based on Feature...

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International Conference on Networking and Network Applications (NaNA)

作者： Wei Wang Binbin Bai Yichuan Wang Xinhong Hei Li Zhang Science and Technology on communication Information Security control Laboratory No.36 Research Institution of CETC College of Computer Science and Engineering Xi'an University of Technology Xi'an China

ISBN: (数字)9781728126296

ISBN: (纸本)9781728126302

In recent years, with the continuous expansion of network communication scale, the types of niche protocols and various proprietary communication protocols are increasing day by day, but botnet and various network attacks have also emerged in endlessly. However, most of the commonly used network protocol recognition software uses a single method, and can only identify specific network data packets or data streams, the degree of automation is low, and the recognition accuracy is not high. In view of the above situation, this paper takes the bit flow protocol data frame as the research object, takes the multi-protocol recognition as the goal, and carries on the protocol feature recognition by comparing the data flow characteristics and the evaluation index. The features of the protocol to be detected are compared with the existing protocol features of the feature base, and the similarity between each protocol is judged. The extracted composite features are digitalized to generate 0-1 matrix, and clustering analysis is completed. The frame vector quantification algorithm of message data is designed and implemented to improve the clustering efficiency. The experimental results show that, compared with the traditional algorithm, the protocol eigenvector algorithm improves the accuracy by 15%, which can make the unknown protocol format be generated faster.

关键词： Protocols security Feature extraction communication networks Syntactics Semantics Clustering algorithms

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