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Computing, Communications and Applications Conference (ComComAp)

作者： Yang Yang Maode Ma Bogang Lin College of Mathematics and Computer Science Key Lab of Information Security of Networks Systems Fuzhou University Fuzhou Fujian China School of Electrical & Electronic Engineering Nanyang Technological University Singapore Singapore

Public key encryption with keyword search enables users to retrieve keywords from encrypted data, which can protect data confidentiality without losing the search operability. However, it is also vulnerable to keyword guessing attacks. In this paper, we propose a conjunctive keywords searchable encryption with designated tester (dPECK) to prevent the keyword guessing attacks. It can support multiple-keywords query at one time, i.e. conjunctive keywords search. We formulate the security notions for the conjunctive keyword search with the designated tester and present an efficient scheme which is proven secure in the standard model. Moreover, we extend the dPECK to proxy re-encryption dPECK (Re-dPECK) in order to enable the search proxy function. At last, the comparison and efficiency simulation demonstrates that this scheme has the lower computation and storage overhead.

关键词： Keyword search Encryption Public key Servers Receivers

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Clipping Noise-based Tone Injection for PAPR Reduction in OFDM Systems

Clipping Noise-based Tone Injection for PAPR Reduction in OF...

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IEEE International Conference on Communications

作者： Jun Hou Chintha Tellambura Jianhua Ge The State Key Lab. of Integrated Service Networks Xidian University Xi'an P. R. China Department of Electrical and Computer Engineering University of Alberta Edmonton AB Canada

Tone injection (TI) mitigates the high peak-to-average power ratio problem without incurring data rate loss or extra side information. However, optimal TI requires an exhaustive search over all possible constellations, which is a hard optimization problem. In this paper, a novel TI scheme that uses the clipping noise to find the optimal equivalent constellations is proposed. By minimizing the mean error of the clipping noise and possible constellation points, the proposed scheme easily determines the size and position of the optimal equivalent constellations. The proposed scheme achieves significant PAPR reduction while maintaining low complexity.

关键词： Peak to average power ratio Noise Indexes Wireless communication Computational complexity

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Distributed and synchronized measurements with FLOCKlab 12

Distributed and synchronized measurements with FLOCKLAB

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10th ACM Conference on Embedded Networked Sensor Systems, SenSys 2012

作者： Lim, Roman Walser, Christoph Ferrari, Federico Zimmerling, Marco Beutel, Jan Computer Engineering and Networks Lab ETH Zurich Switzerland

ISBN: (纸本)9781450311694

Developing, testing, debugging, and evaluating communication protocols for low-power wireless networks is a long and cumbersome task. Simulators can be helpful in the early stages of development, but their models of hardware components and the wireless channel are often rather simplistic and hence cannot substitute experiments on real sensor node platforms. The resources available on common platforms are however very limited, and so are the possibilities for non-intrusive debugging and testing. With most existing testbeds it is only possible to collect information from the serial port, which requires adding highly intrusive logging statements that alter the timing behavior of the software running on the nodes. This is particularly detrimental to the operation of time-critical components, such as radio drivers, media access control (MAC) protocols, and certain flooding protocols [2], hindering their testbed-assisted development. Copyright © 2012 ACM.

关键词： Testbeds

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Hybrid relaying and jamming for secure two-way relay networks with passive eavesdroppers

Hybrid relaying and jamming for secure two-way relay network...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Hui-Ming Wang Xiang-Gen Xia Qinye Yin Pengcheng Mu School of Electronic and Information Engineering Key Lab for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an Shaanxi P. R. China Department of Electrical and Computer Engineering Chonbuk National University Jeonju DE Korea

Exploiting the idea of cooperative communications is an efficient way to improve the physical-layer security of a wireless transmission in the presence of passive eavesdroppers. In this paper, we propose a hybrid cooperative relaying and jamming scheme to enhance the security of a two-way relay network, where some intermediate nodes help to relay the signal to the legitimate terminals via distributed beamforming and the others jam the eavesdropper simultaneously. In such a way, both two cooperative phases of the data transmission are protected. Subjected to the more practical per-node power constraint of each node and without the channel state information (CSI) of the eavesdropper, we propose a scheme to enhance the secrecy of the two terminals. It is shown that the problem can be transformed into a semidefinite programming (SDP) problem with an additional rank-1 constraint. We then develop a penalty function method and an iterative algorithm to solve such a problem efficiently, instead of the popular semi-definite relaxation (SDR) and randomization techniques proposed in the previous literatures. Simulations show that the proposed hybrid scheme greatly improves the security of the two-way relay networks.

关键词： Relays Jamming Security Noise Array signal processing Optimization Wireless communication

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The TREND experimental activities on "green" communication networks

The TREND experimental activities on "green" communication n...

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2013 24th Tyrrhenian International Workshop on Digital Communications - Green Information and Communications Technology, TIWDC 2013

作者： Meo, Michela Zhang, Yi Hu, Yige Idzikowski, Filip Budzisz, Lukasz Ganji, Fatemeh Haratcherev, Ivaylo Conte, Alberto Cianfrani, Antonio Chiaraviglio, Luca Coiro, Angelo Bolla, Raffaele Jaramillo Ortiz, Olga Bruschi, Roberto Gonzalez, Roberto Guerrero, Carmen Tego, Edion Matera, Francesco Keranidis, Stratos Kazdaridis, Giannis Korakis, Thanasis Dipartimento di Elettronica e Telecomunicazioni Politecnico di Torino Italy Telecommunication Networks Group Technische Universität Berlin Germany Networking Technology Domain Alcatel-Lucent Bell Labs. Nozay France DIET Department University of Rome Sapienza Italy Telecommunication Networks and Telematics Lab. RU of CNIT c/o University of Genoa Italy Departamento de Ingeniería Telemática Universidad Carlos III de Madrid Spain Fondazione Ugo Bordoni Rome Italy Department of Computer and Communication Engineering University of Thessaly Greece

ISBN: (纸本)9781479907564

Aimed at answering important questions about the energy demand of current telecom infrastructure and the design of sustainable and energy-efficient future networks, the research of a number of European partners is brought together in the TREND project. In this paper we present the achievements of the Work Package coordinating the experimental activities of the project - WP4. Although not presenting a completely finished portrait yet, the results shown help building a better global view on the "big picture" in the field of energy-efficient networking. © 2013 IEEE.

关键词： Energy efficiency

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Research on network malicious code dendritic cell immune algorithm based on fuzzy weighted support vector machine

Research on network malicious code dendritic cell immune alg...

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6th China Conference of Wireless Sensor networks, CWSN 2012

作者： Li, Peng Wang, Ruchuan Zhou, Yanting Dai, Qiuyu College of Computer Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210003 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing Jiangsu 210003 China Key Lab. of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Province Nanjing Jiangsu 210003 China College of Telecommunications and Information Engineering Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210003 China

ISBN: (纸本)9783642362514

According to the significant impact on the accuracy rate of detection of current immune algorithms brought by incorrect classification of signal, it proposes network malicious code dendritic cell immune algorithm based on fuzzy weighted support vector machine. It summarizes and compares the pros and cons of the four methods, which are basic artificial intelligence immune algorithm, detection of unknown viruses based on immunity theory, malicious code immunity based on cryptography and automated intrusion response based on danger theory. It elaborates the process of the algorithm of the proposed immune algorithm, discusses a variety of input and output signals, gives the samples of the actual input signals, applies the coefficient of variation method to determine the values of the weights so as to enhance the discrimination ability of signal processing results, describes the principle and algorithm steps of fuzzy weighted support vector machine clustering method within immune algorithm proposed. By comparing the fuzzy aggregation before and after the immunization program experiments, it draws the conclusion that the proposed immune algorithm can optimize the input signal, fuzzy clustering the signal and the antigen, so as to bring down the number of immunization strategies and reduce the immune response time, as a result it improve the efficiency and performance of the immune system. © 2013 Springer-Verlag.

关键词： Cells

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Improvement on Ahn et al.'s RSA P-homomorphic signature scheme

Improvement on Ahn et al.'s RSA P-homomorphic signature sche...

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8th International ICST Conference on Security and Privacy in Communication networks, SecureComm 2012

作者： Wang, Zhiwei College of Computer Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210003 China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing 100190 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing Jiangsu 210003 China Key Lab. of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Province Nanjing Jiangsu 210003 China

ISBN: (纸本)9783642368820

P-homomorphic signature is a general framework for computing on authenticated data, which is recently proposed by Ahn et al. With P-homomorphic signature, any third party can derive a signature on the object message m′ from a signature of m, if m′ and m satisfy P(m,m′) = 1 for some predicate P which denotes the authenticatable relationship between m′ and m. Ahn et al. proposed a RSA P-homomorphic signature scheme by using a RSA accumulator, which is very efficient in space. However, the computational cost of verification and derivation is very heavy. We present an improved P-homomorphic signature scheme based on factoring problem. In our construction, the time efficiency of both verification and derivation are much better than Ahn's scheme. © 2013 ICST Institute for computer Science, Social Informatics and Telecommunications engineering.

关键词： Authentication

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A manually-actuated MRI compatible robotic manipulator for image-guided interventions

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Physica Medica 2014年 30卷 e55-e56页

作者： Eftychios G. Christoforou Christoforos Keroglou Andrew Webb Nikolaos V. Tsekos Ioannis Seimenis KIOS Research Center for Intelligent Systems and Networks University of Cyprus Cyprus Department of Electrical and Computer Engineering University of Cyprus Cyprus C.J. Gorter Center for High Field MRI Leiden University Medical Center Leiden Netherlands Medical Robotics Laboratory University of Houston Houston TX USA Med. Physics Lab Medical School Democritus University of Thrace Alexandroupolis Greece

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A bidirectional multi-band 60-GHz wireless-over-fiber transmission system with compacted base station and mobile terminal using a robust mm-Wave LO free technique

A bidirectional multi-band 60-GHz wireless-over-fiber transm...

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Optical Fiber Communication (OFC) Conference

作者： Chenhui Ye Liang Zhang Ming Zhu Anlin Yi Lan Rao Jianjun Yu Yikai Su Sailing He Gee-Kung Chang School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA State Key Laboratory of Modern Optical Instrumentation Zhejiang University Hangzhou China State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

For the first time, bidirectional multi-band multi-gigabit wireless-over-fiber transmission at 60-GHz mm-wave band has been accomplished with centrally supplied LO service. It does not require mm-wave LO devices in ea... 详细信息

ISBN: (纸本)9781557529626

关键词： Uplink Downlink Optical fibers Wireless communication Optical receivers Optical mixing

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Influence maximization for informed agents in collective behavior

Influence maximization for informed agents in collective beh...

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10th International Symposium on Distributed Autonomous Robotic Systems, DARS 2010

作者： Asiaee Taheri, Amir Afshar, Mohammad Asadpour, Masoud Social Networks Lab. School of Electrical and Computer Engineering University of Tehran Tehran Iran P.O. Box 19395-5746 Tehran Iran

ISBN: (纸本)9783642327223

Control of collective behavior is an active topic in biology, social, and computer science. In this work we investigate how a minority of informed agents can influence and control the whole society through local interactions. The problem we specifically target is that a minority of people with a bounded budget for initiating new social relations attempt to control the collective behavior of a society and move the crowd toward a specific goal. Assuming that local interactions can only take place between friends, the minority has to initiate some new relations with the majority. The total cost of new relations is limited to a budget. The problem is then finding the optimal links in order to gain maximum impact on the society. We will model the problem as a diffusion process in a social network. The proof of NP-hardness of the problem for Local Interaction Game model of diffusion is presented. Simulations show that the proposed method surpasses the popular strategies based on degree and distance centrality in performance. © 2013 Springer-Verlag.

关键词： Budget control

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