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5th International Conference on Information Assurance and Security, IAS 2009

作者： Huixian, Li Liaojun, Pang School of Computer Science and Engineering Northwestern Polytechnical University Xi'an China Ministry of Education Key Lab. of Comput. Networks and Information Security Xidian University Xi'an China

ISBN: (纸本)9780769537443

Since biometric data are unique and permanent characteristics of individuals, the privacy protection of biometric authentication schemes has become a common concern of the public. Recently, Tang et al. proposed a biometric-based authentication scheme in an attempt to solve the privacy concerns. However, their scheme cannot resist the attack of tamper. Motivated by these concerns, in this paper, we proposed a new biometric-based authentication scheme, which achieves identity privacy and transaction untraceability. Its security is based on the semantic security of the ElGamal algorithm. Analysis results show that our scheme is higher in efficiency than Tang et al. scheme does, and meanwhile, it can resist the tamper attack. It is concluded that the proposed scheme is more secure and more practical than the existing ones. © 2009 IEEE.

关键词： Authentication

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Coping with Unreliable Channels: Efficient Link Estimation for Low-Power Wireless Sensor networks

Coping with Unreliable Channels: Efficient Link Estimation f...

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International Conference on Networked Sensing Systems

作者： Andreas Meier Tobias Rein Jan Beutel Lothar Thiele Computer Engineering and Networks Lab ETH Zurich 8092 Zurich Switzerland

ISBN: (纸本)9784907764319

The dynamic nature of wireless communication and the stringent energy constraints are major challenges for the design of low-power wireless sensor network applications. The link quality of a wireless link is known for its great variability, dependent on the distance between nodes, the antenna's radiation characteristic, multipath, diffraction, scattering and many more. Especially for indoor and urban deployments, there are numerous factors impacting the wireless channel. In an extensive experimental study contained in the first part of this paper, we show the magnitude of this problem for current Wireless Sensor networks (WSNs) and that based on the overall connectivity graph of a typical multihop WSN, a large portion of the links actually exhibit very poor characteristics. We present a pattern based estimation technique that allows assessing the quality of a link at startup and as a result to construct an optimal neighbor table right at the beginning using a minimum of resources only. Our estimation technique is superior compared to other approaches where protocols continue to decide on the fly which links to use expending valuable energy both for unnecessary retransmissions and recursive link estimation.

关键词： Wireless sensor networks Estimation Stability analysis Stability criteria Wireless LAN Routing protocols Routing

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Adaptive optimal control of connected vehicles 10

Adaptive optimal control of connected vehicles

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10th International Workshop on Robot Motion and Control, RoMoCo 2015

作者： Gao, Weinan Jiang, Zhong-Ping Ozbay, Kaan Control and Networks Lab Department of Electrical and Computer Engineering Polytechnic School of Engineering New York University BrooklynNY11201 United States Department of Civil and Urban Engineering New York University BrooklynNY11201 United States

ISBN: (纸本)9781479970438

In this paper, a data-driven non-model-based approach is proposed for the adaptive optimal control of connected vehicles, comprised of n human-driven vehicles only transmitting motional data and an autonomous vehicle in the tail receiving the broadcasted data from preceding vehicles by wireless vehicle-to-vehicle (V2V) communication devices. An optimal control problem is formulated to minimize the errors of distance and velocity and to optimize the fuel usage. By employing adaptive dynamic programming (ADP) technique, optimal controllers are obtained by online approximation for the connected vehicles without knowing the system dynamics. The effectiveness of the proposed approach is demonstrated via online learning control of the connected vehicles in two scenarios. © 2015 IEEE.

关键词： Vehicles

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Rotation sensing based on a slow-light resonating structure with high group dispersion

Rotation sensing based on a slow-light resonating structure ...

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作者： Chao, Peng Zhengbin, Li Anshi, Xu Natl. Lab. on Local Fiber-Optic Communication Networks and Advanced Optical Communication Systems School of Electronics Engineering and Computer Science Peking University Peking 100871 China

The concept of the Sagnac effect in a slow-light medium and resonator structure with a high group dispersion is investigated. It is found that a slow-light medium can be utilized for relative motion sensing, and a slow-light resonator structure is suitable to detect absolute rotation for navigation purposes. It is noted that the high group dispersion leads to a huge enhancement of the rotation sensor's sensitivity in a resonating structure, and an approach to evaluate and design resonator devices with slow-light property is proposed. Moreover, a folded loop-lattice-based structure is numerically simulated to verify the concept. © 2007 Optical Society of America.

关键词： Resonators

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Layer key management scheme on wireless sensor networks

Layer key management scheme on wireless sensor networks

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5th International Conference on Information Assurance and Security, IAS 2009

作者： Pei, Qingqi Wang, Lei Yin, Hao Pang, Liaojun Tang, Hong Institute of China Electronic System Engineering Corporation Beijing 100039 China Key Lab. of Computer Networks and Information Security of Ministry of Education Xidian University Xi'an 710071 China

ISBN: (纸本)9780769537443

Wireless sensor networks are open architectures, so any potential threat can easily intercept, wiretap and counterfeit the information. Therefore, the safety of WSN is very important. Since any single key system cannot guarantee the security of the wireless sensor network for communications, this paper introduces a hierarchical key management scheme based on the different abilities of different sensor nodes in the clustered wireless sensor network. In this scheme, the nodes are distributed into several clusters, and a cluster head must be elected for each cluster. Private communication between cluster heads is realized through the encryption system based on the identity of each head while private communication between cluster nodes in a same cluster head is achieved through the random key preliminary distribution system. For cluster head node plays a pivotal role in this scheme, a trust management system should be introduced into the election of the cluster head which will exclude the malicious node from outside the cluster, thus improve the whole network security. © 2009 IEEE.

关键词： Network security

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Expected system energy consumption minimization in leakage-aware DVS systems

Expected system energy consumption minimization in leakage-a...

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International Symposium on Low Power Electronics and Design (ISLPED)

作者： Jian-Jia Chen Lothar Thiele Computer Engineering and Networks Lab. (TIK) Swiss Federal Institute of Technology Zurich (ETH Zurich) Switzerland Computer Engineering and Networks Lab. (TIK) (ETH Zurich) Switzerland

The pursuit of energy efficiency is becoming more and more important in hardware and software designs. This research explores energy-efficient scheduling for a periodic real-time task with uncertain execution time in dynamic voltage scaling (DVS) systems with non-negligible leakage/static power consumption. Distinct from the assumption of non-reducible static power consumption in the literature, this paper considers the possibility to reduce it by turning a processor to a dormant mode. We propose an algorithm to derive an optimal frequency assignment to minimize the expected energy consumption without procrastination, while another extended algorithm is developed to apply procrastination scheduling for further energy reduction. Experimental results show that the proposed algorithms can effectively minimize the expected energy consumption.

关键词： Energy consumption Voltage control Energy efficiency Processor scheduling Scheduling algorithm Hardware Software design Dynamic scheduling Real time systems Dynamic voltage scaling

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Wideband compressed sensing for cognitive radios

Wideband compressed sensing for cognitive radios

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2011 IEEE Military Communications Conference, MILCOM 2011

作者： Ayhan Sakarya, F. Nagel, George S. Tran, Lan H. Molnar, Joseph A. Networks and Communications Systems Branch Information Technology Division Naval Research Lab. Washington DC United States School of Electrical and Computer Engineering College of Engineering Georgia Institute of Technology Atlanta GA United States

ISBN: (纸本)9781467300810

Efficient utilization of spectral bands in a dynamic environment with a continuously changing occupation rate is challenging. Static spectral allocations preclude the use of unoccupied spectrum, unless the spectrum manager has released the allocation to another mission. Standard spectral sensing techniques employ swept narrowband receivers. While effective in creating a composite, these techniques are ineffective at identifying short duration signals. Real-time spectral analysis techniques are effective at capturing short duration transmissions, but usually have narrow band capabilities, limited dynamic range and are relatively expensive. Timely accurate sensing of wide spectral band using traditional spectral estimations at the Nyquist rate (or higher) is another challenge due to the high data rate. Compressed sensing (CS) techniques utilize signal-to-information rate processing when signals are sparse in a specific domain. Dynamic spectrum access (often considered a critical component of a cognitive radio (CR)) can reutilize temporally unoccupied spectrum. An accurate estimate of the current state of spectral occupancy is critical to the autonomous decision processes involved in dynamic spectrum access. From this perspective, CS is being studied as an enhancement to dynamic spectrum access strategies. This study addresses feasibility issues for the development of autonomous CS-CR systems that are capable of performing spectrum sensing and recovery without a priori information about the spectral occupancy. Since recovery requires computationally intense non-linear optimization, we perform a single platform trade study on CS methodologies (BP-PD, BP-SPG, ROMP, Edge Detection, and Sequential Recovery) for efficient wideband recovery relative to execution time and reconstruction error. We propose adaptive coarse detection, and exact recovery based on adaptive edge detection. We present the results using continuous waves and pulses (MATlab or GRC generated, or USRP mea

关键词： Cognitive radio

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Competition on robust deep learning

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National Science Review 2023年第6期10卷 13-15页

作者： Yinpeng Dong Chang Liu Wenzhao Xiang Hang Su Jun Zhu Department of Computer Science and Technology Institute for AI Tsinghua-Bosch Joint ML Center THBI Lab BNRist Center Tsinghua University Institute of Image Communication and Networks Engineering in the Department of Electronic Engineering (EE) Shanghai Jiao Tong University Key Laboratory of Intelligent Information Processing of Chinese Academy of Sciences (CAS) Institute of Computing Technology CAS Peng Cheng Laboratory Pazhou Laboratory (Huangpu)

PROBLEM In recent years,the rapid development of artificial intelligence (AI) technology,especially machine learning and deep learning, is profoundly changing human production and *** various fields,such as robotics,face recognition,autonomous driving and healthcare,AI is playing an important ***,although AI is promoting the technological revolution and industrial progress,its security risks are often *** studies have found that the wellperforming deep learning models are extremely vulnerable to adversarial examples [1-3].The adversarial examples are crafted by applying small,humanimperceptible perturbations to natural examples,but can mislead deep learning models to make wrong *** vulnerability of deep learning models to adversarial examples can raise security and safety threats to various realworld applications.

关键词： robustness adversarial example adversarial training deep learning

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Performance measurement for voice services in heterogeneous wired networks

Performance measurement for voice services in heterogeneous ...

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4th International ICST Conference on Testbeds and Research Infrastructures for the Development of networks and Communities, TRIDENTCOM 2008

作者： Alawieh, Basel Ahmed, Rana Mouftah, Hussein T. Department of Electrical Engineering Concordia University Montreal QC Canada Department of Computer Engineering American University of Sharjah Sharjah United Arab Emirates Optical Networks Research Lab. SITE University of Ottawa Ottawa ON Canada

ISBN: (纸本)9789639799240

Voice over IP (VoIP) service providers implementing different protocols in their core networks are required to coordinate in order to provision, support and deliver voice services to end clients. This paper presents a performance measurement experience for the transport of voice services across multiple heterogeneous wired networks. Our test results show that Multiple Protocol label Switching (MPLS) protocol slightly outperforms IP in delivering voice services. Moreover, the type of call signaling protocol used, tunneling category adopted and the type of Virtual Private Network (VPN) implemented affect the overall quality and performance of voice services in terms of jitter and delay.

关键词： Virtual private networks

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Extremum Seeking and Adaptive Dynamic Programming for Distributed Feedback Optimization 63

Extremum Seeking and Adaptive Dynamic Programming for Distri...

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63rd IEEE Conference on Decision and Control, CDC 2024

作者： Liu, Tong Krstic, Miroslav Jiang, Zhong-Ping New York University Control and Networks Lab Department of Electrical and Computer Engineering Tandon School of Engineering BrooklynNY11201 United States University of California Department of Mechanical and Aerospace Engineering San DiegoCA92093-0411 United States

ISBN: (纸本)9798350316339

This paper studies the distributed feedback optimization problem for linear multi-agent systems without precise knowledge of local costs and agent dynamics. The proposed solution is based on a hierarchical approach that uses upper-level coordinators to adjust reference signals toward the global optimum and lower-level controllers to regulate agents' outputs toward the reference signals. In the absence of precise information on local gradients and agent dynamics, an extremum-seeking mechanism is used to enforce a gradient descent optimization strategy, and an adaptive dynamic programming approach is taken to synthesize an internal-model-based optimal tracking controller. The whole procedure relies only on measurements of local costs and input-state data along agents' trajectories. Moreover, under appropriate conditions, the closed-loop signals are bounded and the output of the agents exponentially converges to a small neighborhood of the desired extremum. A numerical example is conducted to validate the efficacy of the proposed method. © 2024 IEEE.

关键词： Dynamic programming

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