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IEEE Latin American Symposium on Circuits and Systems

作者： Johanna Sepúlveda Guy Gogniat Ricardo Pires Cesar Pedraza Wang Chau Marius Strum Microelectronics Laboratory LME University of Sao Paulo Brazil Information and Communication Science and Technology Laboratory Lab-STICC Université Bretagne Sud France Telecommunications Engineering Faculty Santo Tomás University Colombia

ISBN: (纸本)9781467348973

Three dimension Multi processors System-on-Chip (3D-MPSoCs) hold promises to allow the development of compact and efficient devices. They support many applications on the same die, able of being mapped dynamically during the execution time. Each application may have different communication requirements. Quality-of-Service (QoS) can be implemented at the communication structure (CS) to support the communication requirements of the dynamic 3D-MPSoC. Our work proposes QoS 3D-HoC, a new 3D-CS that implements the QoS. We evaluate the performance of our architecture over several 3D-MPSoC synthetic and real traffic scenarios and estimate their impact overall CS performance. We compare our architecture against the previous 3D-CS with and without QoS and show that our approach meets the communication requirements while reducing the latency and power up to 87% and 39%, respectively when compared to single 3D-NoC.

关键词： 3D-MPSoCs 3D-NoC. 3D-CS

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ENERGY EFFICIENT DISTRIBUTED STEGANOGRAPHY FOR SECURE communication IN WIRELESS MULTIMEDIA SENSOR NETWORKS

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Journal of Electronics(China) 2013年第1期30卷 9-16页

作者： Lin Qiaomin Wang Ruchuan Ye Ning Wang Zhongqin College of Computer Nanjing University of Posts and Telecommunications Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Ministry of Education Department of Information Science Nanjing College for Population Management

A secure communication mechanism is necessary in the applications of Wireless Multimedia Sensor Networks (WMSNs), which is more vulnerable to security attacks due to the presence of multimedia data. Additionally, given the limited technological resources (in term of energy, computation, bandwidth, and storage) of sensor nodes, security and privacy policies have to be combined with energy-aware algorithms and distributed processing of multimedia contents in WMSNs. To solve these problems in this paper, an energy efficient distributed steganography scheme, which combines steganography technique with the concept of distributed computing, is proposed for secure communication in WMSNs. The simulation results show that the proposed method can achieve considerable energy efficiency while assuring the communication security simultaneously.

关键词： Discrete Wavelet Transform （DWT） Distributed steganography Energy efficiency Perfect hash Wireless Multimedia Sensor Networks （WMSNs）

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Wideband DOA estimation based on block FOCUSS with limited samples

Wideband DOA estimation based on block FOCUSS with limited s...

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IEEE Global Conference on Signal and information Processing (GlobalSIP)

作者： Jiawei Zhang Nan Hu Ming Bao Xiaodong Li Wei He Lab of Communication Acoustics Chinese Academy of Sciences Beijing China Department of Electronic Engineering and Information Science University of Science and Technology of China Hefei China Key Laboratory of Wireless Sensor Network & Communication Chinese Academy of Sciences Shanghai China

Whittaker-Shannon interpolation formula instead of narrowband filter (NF) is used to interpolate the signal more precisely in wideband direction-of-arrival (DOA) estimation problem when the number of samples is highly limited. A novel algorithm named block FOCal Underdetermined System Solver (BFOCUSS) is proposed to solve this problem. The simulation results validate the superior performance compared with the other algorithms.

关键词： Direction-of-arrival estimation Estimation Wideband Interpolation Vectors Signal reconstruction Arrays

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A Study of the Three-Term Non-Gaussian Pre-Stack Inversion Method

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Chinese Journal of Geophysics 2013年第1期55卷 55-64页

作者： Yang LIU Jia-Shu ZHANG Guang-Min HU Zhen-Hua HE Sichuan Key Lab of Signal and Information Processing Southwest Jiaotong University Chengdu 610031 China Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks University of Electronic Science and Technology of China Chengdu 611731 China State Key Laboratory of Oil and Gas Reservoir Geology and Exploration Chengdu University of Technology Chengdu 610059 China

In view of the wide use of the “Gaussian distribution hypothesis of noise” in geophysical inversion problems, we study the non-Gaussian distribution characteristics of the noise in pre-stack seismic data. Upon this analysis, the concept of non-Gaussian inversion of pre-stack three-term inversion is put forward, in which the mixed-norm is proposed for suppressing both the Gaussian and non-Gaussian noises. In view of the non-derivable feature of the objective function, the Powell algorithm is used to solve the objective function. Model test and real seismic data inversion results show the correctness and reliability of the algorithm.

关键词： Prestack inversion Non-Gaussian Mixed norm Powell algorithm

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Nonreciprocal transmission through grating with magneto-optical substrate

Nonreciprocal transmission through grating with magneto-opti...

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Nanophotonics, Nanoelectronics and Nanosensor, N3 2013

作者： Zhu, Haibin Li, Feng Liu, Yajie Jiang, Chun Tang, Bin Zang, Xiaofei College of Mathematics Physics and Information Engineering Jiaxing University Jiaxing 314001 China State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai 200240 China School of Mathematics and Physics Changzhou University Changzhou 213164 China Engineering Research Center of Optical Instrument and System Ministry of Education and Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai 200093 China

ISBN: (纸本)9781557529763

A double-layer grating structure is proposed, which can show nonreciprocal transmission in near-IR frequency range. The structure is composed of metallic grating with magneto-optical substrate. The nonreciprocity depends on both incidence angle and thickness of the substrate. With proper conditions, the nonreciprocity is as high as 57.6%. © OSA 2013.

关键词： Light transmission

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Hybrid-on-Chip communication architecture for dynamic MP-SoC protection

Hybrid-on-Chip communication architecture for dynamic MP-SoC...

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2012 25th Symposium on Integrated Circuits and Systems Design, SBCCI 2012

作者： Sepulveda, Johanna Gogniat, Guy Pires, Ricardo Chau, Wang J. Strum, Marius Microelectronics Laboratory LME University of São Paulo São Paulo Brazil Information and Communication Science and Technology Laboratory Lab-STICC Université Bretagne Sud France Federal Institute of Education Science and Technology of São Paulo São Paulo Brazil

ISBN: (纸本)9781467326087

MPSoCs are able to support multiple applications on the same chip. This flexibility also represents a vulnerability, turning the MPSoC security specially challenging. Most of the current MPSoCs security services are based on symmetric and public-key cryptographic mechanisms. So that, MPSoCs integrate a large set of keys that must be exchanged in an efficient and secure way. In such scenario, any security concept will be ineffective if the key management is weak. In this paper, we present the implementation of an on-chip hybrid communication (HoCs) security-based architecture, that combines bus and Network-on-chip (NoC), to address the efficient and secure key management at MPSoCs. The HoC implements dynamically the QoSS (Quality of Security Service) concept that allows the customization of security. We evaluate the effectiveness of our approach over several MPSoCs attack scenarios and estimate their impact on the overall performance. We show that our architecture can perform a fast detection of a wide range of attacks and a fast configuration of the different security policies for several MPSoC applications. Our hybrid approach saves upto 16% and 25% of communication latency and power consumption, respectively, when compared to the NoC-based architecture without any security. ©2012 IEEE.

关键词： Network-on-chip

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Hierarchical NoC-based security for MP-SoC dynamic protection

Hierarchical NoC-based security for MP-SoC dynamic protectio...

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2012 IEEE 3rd Latin American Symposium on Circuits and Systems, LASCAS 2012

作者： Sepulveda, Johanna Gogniat, Guy Pedraza, Cesar Pires, Ricardo Chau, Wang Jiang Strum, Marius Microelectronics Laboratory LME University of São Paulo São Paulo Brazil Information and Communication Science and Technology Laboratory Lab.-STICC Université Bretagne Sud France Telecommunications Engineering Faculty Santo Tomás University Colombia

ISBN: (纸本)9781467312080

MPSoCs are able to support multiple applications on the same chip. This flexibility offered by the MPSoC also represents a vulnerability, turning the MPSoC security specially challenging. The goal of the designers is to provide MPSoC protection that meets the performance and security requirements of all the applications. The Network-on-chip (NoC) interconnection structure can be used to efficiently overcome the present MPSoC vulnerabilities. In this paper, we present the implementation of a hierarchical security NoC-based architecture to detect and prevent a wide range of MPSoC attacks. We integrate agile and dynamic security firewalls into the NoC in order to detect attacks based on different security rules. It uses the QoSS (Quality of Security Service) concept. It takes into account the tradeoff between security and performance. We evaluate the effectiveness of our approach over several MPSoCs attack scenarios and estimate their impact on the overall performance. We show that our architecture can perform a fast detection of a wide range of attacks and a fast configuration of the different security policies for several MPSoC applications. © 2012 IEEE.

关键词： Network-on-chip

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Direct multi-hop time synchronization with constructive interference

Direct multi-hop time synchronization with constructive inte...

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11th ACM/IEEE Conference on information Processing in Sensing Networks, IPSN'12

作者： Wang, Yin Pan, Gaofeng Huang, Zhiyu MOE Key Lab. for Information System Security School of Software TNLIST China Science and Technology on Communication Information Security Control Laboratory China Institute of Software Chinese Academy of Sciences China

ISBN: (纸本)9781450312271

Multi-hop time synchronization in wireless sensor networks (WSNs) is often time-consuming and error-prone due to random time-stamp delays for MAC layer access and unstable clocks of intermediate nodes. Constructive interference (CI), a recently discovered physical layer phenomenon, allows multiple nodes transmit and forward an identical packet simultaneously. By leveraging CI, we propose direct multi-hop (DMH) time synchronization by directly utilizing the time-stamps from the sink node instead of intermediate nodes, which avoids the error caused by the unstable clock of intermediate nodes. DMH doesn't need decode the flooding time synchronization beacons. Moreover, DMH explores the linear regression technique in CI based time synchronization to counterbalance the clock drifts due to clock skews. © 2012 ACM.

关键词： Synchronization

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Hierarchical NoC-based security for MP-SoC dynamic protection

Hierarchical NoC-based security for MP-SoC dynamic protectio...

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IEEE Latin American Symposium on Circuits and Systems

作者： Johanna Sepulveda Guy Gogniat Cesar Pedraza Ricardo Pires Wang Jiang Chau Marius Strum Microelectronics Laboratory LME University of Sao Paulo Information and Communication Science and Technology Laboratory Lab-STICC Universite Bretagne Sud Telecommunications Engineering Faculty Santo Tomas University

ISBN: (纸本)9781467312073

MPSoCs are able to support multiple applications on the same chip. This flexibility offered by the MPSoG also represents a vulnerability, turning the MPSoC security specially challenging. The goal of the designers is to provide MPSoC protection that meets the performance and security requirements of all the applications. The Network-on-chip (NoC) interconnection structure can be used to efficiently overcome the present MPSoC vulnerabilities. In this paper, we present the implementation of a hierarchical security NoC-based architecture to detect and prevent a wide range of MPSoC attacks. We integrate agile and dynamic security firewalls into the NoC in order to detect attacks based on different security rules. It uses the QoSS (Quality of Security Service) concept. It takes into account the tradeoff between security and performance. We evaluate the effectiveness of our approach over several MPSoCs attack scenarios and estimate their impact on the overall performance. We show that our architecture can perform a fast detection of a wide range of attacks and a fast configuration of the different security policies for several MPSoC applications.

关键词： Security Network-on-chip Multi-Processor SoC QoSS (Quality-of-Security-Service)

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Energy-efficient distributed relay selection based on statistical channel state information

Energy-efficient distributed relay selection based on statis...

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6th International ICST Conference on Wireless Internet, WICON 2011

作者： Jiang, Haifang Zhang, Sihai Zhou, Wuyang Wireless Information Network Lab. Department of Electronic Engineering and Information Science University of Science and Technology of China Hefei Anhui 230026 China Key Laboratory of Wireless Sensor Network and Communication Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai 200050 China

ISBN: (纸本)9783642304927

In this paper, distributed relay selection algorithms based on statistical Channel State information (CSI) in amplify-and-forward mode are proposed, aiming to maximize energy efficiency. With the limited CSI, a tradeoff is made between the total power consumption and the target outage probability at the source. A forwarding threshold is obtained by minimizing the average transmission power. Each relay individually decides whether to participate in forwarding the source signals according to the forwarding threshold. Firstly, a Distributed Multiple Relay Selection (DMRS) algorithm is proposed, in which all candidate relays have the possibility of transmitting the source signals and the threshold is obtained by numerical search. Then a Distributed Single Relay Selection (DSRS) algorithm with low complexity is investigated under the assumption that only one relay forwards the signals. Simulation results indicate that the proposed algorithms provide significant performance gain in terms of energy efficiency over the existing AF-mode relay selection algorithms. © 2012 ICST Institute for Computer science, Social Informatics and Telecommunications Engineering.

关键词： Energy efficiency

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