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2011 IEEE International Conference on Mechatronics and Automation, ICMA 2011

作者： Jing, Jiang Xuesong, Zhang Science and Technology on Electro-optical Information Security Control Laboratory Beijing China Science and Technology on Electro-optical Information Security Control Laboratory Northeast Institute of Electronics Technology Hebei China

ISBN: (纸本)9781424481149

Two-dimensional fuzzy temperature controller was used in the system of inverter air-conditioner to control the room temperature. Self-adjustment PID fuzzy controller was proposed to realize real-time control function. V/F control mode was used to compensate with low voltage, the average sampling algorithm was proposed to implement SPWM waveform modulation. Finally, the feasibility of self-adjustment PID fuzzy controller was verified by simulation, the actual operation results had proved that self-adjustment PID fuzzy controller had reliable, good output waveform and small harmonic wave, which could meet operational requirements of inverter air-conditioner. © 2011 IEEE.

关键词： Air conditioning

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A security routing protocol of ad hoc network based on node trust evalution

A security routing protocol of ad hoc network based on node ...

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2014 International Conference on information and Network security, ICINS 2014

作者： Li, Yahui Yang, Hongwa Xie, Fei Science and technology on communication information security control laboratory Jiaxing China Northern electronic instrument institute Beijing China

ISBN: (纸本)9781849199094

The routing protocol is the core of the Ad Hoc network protocols, which largely determines the performance and features of an Ad Hoc network. Aiming at the characteristics of the Mobile Radio Ad Hoc network, this paper is to design a low-rate mobile Ad Hoc network routing protocols WLRP (Wireless Low-Rate Ad Hoc security Routing Protocol), using the trust evaluation mechanism between neighbour nodes which can effectively prevent attacks from inside the network, to greatly enhance the Ad Hoc Network security. Simulation results show that in low-Rate link environment, the WLRP protocol performs better than AODV.

关键词： Routing protocols

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An analysis of network traffic identification based on decision tree 2

An analysis of network traffic identification based on decis...

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2nd International Conference on Artificial Intelligence and Electromechanical Automation, AIEA 2021

作者： Dai, Jiahao Chen, Yongqun Chen, Yucheng Meng, Aodong China Electronic Corporation NO.36 Institute Science and Technology on Communication Information Security Control Laboratory Jiaxing China

ISBN: (纸本)9781665432658

With the strong development momentum of the Internet, network not only brings convenience to our life, but also poses threats to our network security. Users can hide their IP and identity information through encryption algorithm, and carry out various illegal activities and transactions in the network. Therefore, it will be of great value to identify special traffic which impact on network security and exploring abnormal situations in the network. Special traffic is important to the security of the network space. In this paper, we establish a decision tree model based on C4.5 and random forest to compare the accuracy of the two decision tree algorithms in traffic classification. Experimental results show that these two methods can identify traffic effectively. © 2021 IEEE.

关键词： Decision trees

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A Novel Orthogonal LoRa Multiple Access Algorithm for Satellite Internet of Things

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China communications 2022年第3期19卷 279-289页

作者： Chengwen Zhang Liankai Wang Libin Jiao Shipeng Wang Jun Shi Jia Yue School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150080China Science and Technology on Communication Networks Laboratory Shijiazhuang 050081China Key Laboratory of Police Wireless Digital Communication Ministry of Public SecurityHarbin 150001China

In recent years,LoRa has been extensively researched in the satellite Internet of Things(IoT).However,the multiple access technology of LoRa is still one of the bottlenecks of satellite *** improve the multiple access performance of LoRa satellite IoT,based on the orthogonality of LoRa symbols in the fractional domain,this paper proposes a low complexity Orthogonal LoRa Multiple Access(OLMA)algorithm for multiple LoRa users occupying the same frequency *** algorithm introduces the address code to divide the fractional bandwidth into multiple parts,and the OLMA users with different address codes occupy different parts to transmit the information code,thus avoiding mutual interference caused by collisions in the same frequency *** multiple access capability of OLMA can be flexibly configured only by simply adjusting the length of the address code according to the actual application requirements of data *** analysis and simulation results show that the OLMA algorithm can greatly improve the multiple access capability and the total transmission bit rate of LoRa IoT without changing the existing LoRa modulation parameters and process.

关键词： LoRa satellite Internet of Things multiple access fractional domain linear frequency modulation

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A rejection sampling algorithm for off-centered discrete Gaussian distributions over the integers

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science China(information sciences) 2019年第3期62卷 196-198页

作者： Yusong DU Baodian WEI Huang ZHANG School of Data and Computer Science Sun Yat-sen University Guangdong Key Laboratory of Information Security Technology Chongqing Key Lab of Computer Network and Communication Technology

Dear editor,Discrete Gaussian sampling, that is, sampling from a discrete Gaussian distribution DΛ,σ,cwith parameter σ> 0 and center c∈R~n over an ndimensional lattice Λ, has been considered by the cryptography research community as one of the fundamental building blocks of lattice-based cryptography [1, 2]. The simplest lattice is the one-

关键词： A rejection sampling algorithm for off-centered discrete Gaussian distributions over the integers

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A broadband fractal AMC ground plane for low-profile antennas

A broadband fractal AMC ground plane for low-profile antenna...

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

作者： Liu, Shengying Wu, Qun Hua, Jun Chen, Meiliang Dept. of Microwave Engineering Harbin Institute of Technology Harbin China Science and Technology on Communication Information Security Control Laboratory China

ISBN: (纸本)9781467313032

Through introducing Koch fractal theory, an ordinary AMC structure and broadband Koch fractal AMC ground planes are designed and compared. The bandwidth and performance improvement of the fractal AMC ground plane are taken into consideration to acquire the low-profile antenna system at the frequency band from 40MHz to 70MHz. This research establishes the theoretical foundation for further experimental study. © 2012 IEEE.

关键词： Fractals

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A hybrid biometric identification framework for high security applications

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Frontiers of Computer science 2015年第3期9卷 392-401页

作者： Xuzhou LI Yilong YIN Yanbin NING Gongping YANG Lei PAN School of Computer Science and Technology Shandong University Jinan 250101 China Key Laboratory of Information Security and Intelligent Control of Shandong Province Shandong Youth University of Political Science Jinan 250103 China

Research on biometrics for high security applica- tions has not attracted as much attention as civilian or foren- sic applications. Limited research and deficient analysis so far has led to a lack of general solutions and leaves this as a challenging issue. This work provides a systematic analy- sis and identification of the problems to be solved in order to meet the performance requirements for high security applica- tions, a double low problem. A hybrid ensemble framework is proposed to solve this problem. Setting an adequately high threshold for each matcher can guarantee a zero false accep- tance rate （FAR） and then use the hybrid ensemble framework makes the false reject rate （FRR） as low as possible. Three ex- periments are performed to verify the effectiveness and gener- alization of the framework. First, two fingerprint verification algorithms are fused. In this test only 10.55% of fingerprints are falsely rejected with zero false acceptance rate, this is sig- nificantly lower than other state of the art methods. Second, in face verification, the framework also results in a large re- duction in incorrect classification. Finally, assessing the per- formance of the framework on a combination of face and gait verification using a heterogeneous database show this frame- work can achieve both 0% false rejection and 0% false accep- tance simultaneously.

关键词： biometric verification hybrid ensemble frame-work high security applications

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High-rate discrete-modulated continuous-variable quantum key distribution with composable security

arXiv

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arXiv 2025年

作者： Wu, Mingze Pan, Yan Li, Junhui Wang, Heng Fan, Lu Shao, Yun Li, Yang Huang, Wei Yu, Song Xu, Bingjie Zhang, Yichen Yang, Jie Pi, Yaodi Ye, Ting Sun, Ao Jiang, Lin Yan, Lianshan Pan, Wei National Key Laboratory of Security Communication Institute of Southwestern Communication Chengdu610041 China State Key Laboratory of Information Photonics and Optical Communications School of Electronic Engineering Beijing University of Posts and Telecommunications Beijing100876 China Center for Information Photonics & Communications School of Information Science and Technology Southwest Jiaotong University Sichuan Chengdu611756 China

Discrete modulation represents a practical and device-friendly solution for high speed transmission in continuous-variable quantum key distribution (CV-QKD), offering high compatibility with coherent optical communication systems. However, when it comes to transmission distance, discrete-modulated CV-QKD systems fall considerably short compared to their Gaussian-modulated counterparts. Leveraging an advanced security analysis method and probabilistic shaped 16-quadrature amplitude modulation, combined with experimental parameter optimization and an efficient fractional-spacing equalization method based on a variable step-size least mean square (LMS) algorithm, we have experimentally showcased a local local oscillator (LLO) CV-QKD system over 126.56 km span of single-mode fiber with secret key rate of 171.42 kbps. This system sets a new record of the transmission distance of LLO CV-QKD systems, and provides a promising candidate for the commercialization and practical application of CV-QKD technology. © 2025, CC BY.

关键词： Quadrature amplitude modulation

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EMO: Edge Model Overlays to Scale Model Size in Federated Learning

arXiv

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arXiv 2025年

作者： Wu, Di He, Weibo Feng, Wanglei Wen, Zhenyu Qian, Bin Varghese, Blesson School of Computer Science University of St Andrews United Kingdom Institute of Cyberspace Security College of Information Engineering Zhejiang University of Technology China University of Science and Technology of China China State Key Laboratory of Industrial Control Technology Zhejiang University China

Federated Learning (FL) trains machine learning models on edge devices with distributed data. However, the computational and memory limitations of these devices restrict the training of large models using FL. Split Federated Learning (SFL) addresses this challenge by distributing the model across the device and server, but it introduces a tightly coupled data flow, leading to computational bottlenecks and high communication costs. We propose EMO as a solution to enable the training of large models in FL while mitigating the challenges of SFL. EMO introduces Edge Model Overlay(s) between the device and server, enabling the creation of a larger ensemble model without modifying the FL workflow. The key innovation in EMO is Augmented Federated Learning (AFL), which builds an ensemble model by connecting the original (smaller) FL model with model(s) trained in the overlay(s) to facilitate horizontal or vertical scaling. This is accomplished through three key modules: a hierarchical activation replay cache to decouple AFL from FL, a convergence-aware communication controller to optimize communication overhead, and an ensemble inference module. Evaluations on a real-world prototype show that EMO improves accuracy by up to 17.77% compared to FL, and reduces communication costs by up to 7.17× and decreases training time by up to 6.9× compared to SFL. © 2025, CC BY.

关键词： Federated learning

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An Optimized Method of Packet Loss Rate under Backup Path Protection in OBS Network 3

An Optimized Method of Packet Loss Rate under Backup Path Pr...

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2020 3rd International Conference on Modeling, Simulation and Optimization Technologies and Applications, MSOTA 2020

作者： Meng, Aodong Chen, Yucheng Dai, Jiahao Chen, Yongqun Science and Technology on Communication Information Security Control Laboratory Jiaxing China No.36 Research Institute of Cetc Jiaxing China

In order to calculate the packet loss rate in OBS network, this paper proposes a method, which performs good in both accuracy and rapidity, based on Erlang B formula to estimate the packet loss probability in OBS network using backup path protection mechanism. This method can be used to optimize the design of OBS network protocol, and it also provides an accurate and efficient approximate calculation method of packet loss rate in OBS network and can be conductive to the study of using copy transmission to enhance the network survivability. Based on the formula of Erlang B, this paper briefly introduces the derivation process and principle of this method. The basic experimental principles of simulation and estimation processes are designed in this paper, and the experimental results of the proposed method under a typical network topology (ARPA network) with no protection mechanism and 1 and 2 backup paths protection mechanisms are analyzed to verify its rapidity and accuracy. The results of experiments show the accuracy and efficiency of this method. © Published under licence by IOP Publishing Ltd.

关键词： Network topology

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