检索结果-内蒙古大学图书馆

2014 4th IEEE International Conference on Information Science and technology, ICIST 2014

作者： Yun-Yun, Ji Zhen, Yang College of Communications and Information Engineering Nanjing University of Posts and Telecommunications Nanjing Jiangsu Province210003 China Key Lab of 'Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing Jiangsu Province210003 China

ISBN: (纸本)9781479948086

The Lorentzian hard thresholding pursuit algorithm is proposed in this paper to achieve efficient reconstruction for compressed sensing in the presence of impulsive noise. In the Lorentzian hard thresholding pursuit algorithm, the minimum LL2 norm problem is solved with respect to a support which is obtained through the hard thresholding operator. The convergence and reconstruction performance of the Lorentzian hard thresholding pursuit algorithm is proved in theory in this paper. Experimental results show that the reconstruction performance of the Lorentizian hard thresholding pursuit algorithm is superior to the Lorentzian iterative hard thresholding algorithm which is also an effective algorithm for sparse reconstruction of compressed sensing in the impulsive noise environment. © 2014 IEEE.

关键词： Cost functions

来源：评论

学校读者我要写书评

暂无评论

Poster: Secret key generation from CFR for OFDM TDD systems over fading channels 9

Poster: Secret key generation from CFR for OFDM TDD systems ...

引用

9th International Conference on communications and networking in China, CHINACOM 2014

作者： Peng, Yuexing Alexandropoulos, George C. Wang, Peng Li, Yonghui Ha, Dac-Binh Key Lab of Universal Wireless Communication Beijing University of Posts and Telecommunications Beijing China Broadband Wireless and Sensor Network Group Athens Information Technology Peania Greece Centre of Excellence in Telecommunications University of Sydney Sydney Australia Institute of Research and Development Duy Tan University Danang Viet Nam

ISBN: (纸本)9781479959709

One of the basic problems in cryptography is the generation of a common secret key between two legitimate parties in order to prevent eavesdropping. In this paper, we develop an information-theoretic secret key generation method that exploits the physical layer properties of the multipath channel in orthogonal frequency division multiplexing (OFDM) systems with time division duplexing (TDD), and in particular the amplitude and phase of the estimated channel frequency response (CFR). Both the fast space decorrelation and the independency of the amplitude and phase of the multipath fading channel are used to generate the secret key, leading to increased secrecy bit rate and negligible secrecy leakage. The effect of the channel estimation error, delay and mobility are investigated for the presented method. Simulation results corroborate the increased performance of the proposed method over existing ones. © 2014 IEEE.

关键词： Orthogonal frequency division multiplexing

来源：评论

学校读者我要写书评

暂无评论

A trust computation model for node-disjoint multipath routing in multimedia sensor networks

引用

Energy Education Science and technology Part A: Energy Science and Research 2014年第6期32卷 5735-5738页

作者： Ye, Qian Wu, Meng Wang, Yufei Nanjing University of Posts and Telecommunications College of Computer No.66 Xin Mofan Road Nanjing China Nanjing University of Posts and Telecommunications Key Lab of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education College of Telecommunications and Information Engineering No.66 Xin Mofan Road Nanjing China China Electric Power Research Institute Research Institute of Information Technology and Communication No.8 Nan Rui Road Nanjing China

Security is an important factor which influences the application of the wireless multimedia sensor networks. And Multipath routing is an effective approach to transmit large multimedia dada in sensor networks. This paper focuses on trust evaluation of node-disjoint multiple routing paths created by multipath routing protocols. First, the trust level of single sensor node is calculated based on packet-drop rate. Then, based on the trust value of single sensor node, the trust level of the single routing path is evaluated. And the trust value fusion method for multiple routing paths is proposed. The overall of a group of routing paths increases monotonically, as the more trusted routing paths are added into the routing path group. Finally, the proposed trust computation methods are well analyzed. The analysis and simulation results shows that our trust computation model can effectively evaluate the trust level of the node-disjoint multiple routing paths, and affords a new secure reference for designing multipath routing protocols. © Sila Science. All Rights Reserved.

关键词： sensor nodes

来源：评论

学校读者我要写书评

暂无评论

A Coverage Control Algorithm Based on Probability Model for Three-Dimensional wireless sensor networks

A Coverage Control Algorithm Based on Probability Model for ...

引用

第11届分布式计算及其应用国际学术研讨会

作者： Junqing Zhang Ruchuan Wang Yisheng Qian Qianyi Wang College of Computer Nanjing University of Posts and Telecommunications Nanjing Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education

The main study of traditional probability coverage problem in wireless sensor networks(WSNs) is aiming at twodimensional space, however, most practical applications of wireless sensor network is placed in a three-dimensional sensor networks. Therefore, probability model is introduced for three-dimensional WSNs. This paper presents a method that using Voronoi divide to control the Scheduling of the probability model nodes in the target area. Also, a coverage control algorithm based on probability model(PMCCA) is proposed. We verify the effectiveness and the practice of PMCCA algorithm by comparing PMCCA algorithm to another algorithm in simulation experiment.

关键词： wireless sensor networks three-dimensional coverage probability model Voronoi divide

来源：评论

学校读者我要写书评

暂无评论

P2P traffic identification method based on an improvement incremental SVM learning algorithm

P2P traffic identification method based on an improvement in...

引用

International Symposium on wireless Personal Multimedia communications (WPMC)

作者： Jing Gong Wenjun Wang Pan Wang Zhixin Sun Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education (Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)9781479964123

How to classify the data sets with vast information amount and large distribution fluctuation, which is always the research hotspot. This paper puts forward an improved SVM incremental learning algorithm by comparing the different incremental learning methods of SVM algorithm. In the algorithm, whether to violate the KTT conditions is regarded as an important basis for incremental data set. And the algorithm will be more efficient on the classification of SVM incremental sets through optimizing and improving itself. Then the paper compares the SVM-based re-training algorithm, the standard SVM incremental learning algorithm and the improved SVM incremental learning algorithm through identifying P2P network traffic. The experimental results show that the improved SVM incremental learning algorithm proposed in this article can save storage space and increase the accuracy of the identification of P2P traffic.

关键词： Classification algorithms Support vector machines Algorithm design and analysis Training Standards Accuracy Data models

来源：评论

学校读者我要写书评

暂无评论

Practical quantum key distributions with single-photon-added coherent sources

Practical quantum key distributions with single-photon-added...

引用

第十六届全国量子光学学术报告会

作者： Dong Wang Zheng-Fu Han Guang-Can Guo Feng Zhu Qin Wang Key Lab of Quantum Information University of Science and Technology of ChinaCAS Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsMinistry of Education

We propose new schemes on implementing the single-photon-added coherent source in the quantum key *** apply the source in either the standard BB84 protocol or the new proposed measurement-device-independent quantum ke... 详细信息

关键词： Practical quantum key distributions with single-photon-added coherent sources

来源：评论

学校读者我要写书评

暂无评论

Secure Efficient Routing Based on network Coding in the Delay Tolerant networks

Secure Efficient Routing Based on Network Coding in the Dela...

引用

2014 IEEE 5th International Conference on Software Engineering and Service Science

作者： Jianmin Bao Shu Zhang Junjie Zhang Kun Wang Haifeng Hu Key Lab of Broadband Wireless Communication and Sensor Network Technology （Nanjing Univ. of Posts and Telecommunications） Ministry of Education Nanjing University of Posts and Telecommunications

The Delay/Disruption Tolerant network（DTN） is characterized with long delay,high bit-error rate,intermittent connectivity and frequent *** to this,network coding is introduced to improve its transmission performance *** DTN routing algorithms based on network coding have been ***,they are susceptible to various malicious *** this paper,we propose a new kind of networking scheme suitable to the DTN,which can resist the eavesdropping attacks to a certain ***,we establish a DTN network model based on the packet path optimization allocation algorithm and redefine the packet format to meet the algorithm ***,to resist the dropping attacks,the source node dynamically adds redundancy factors at the certain *** the pollution attacks and the data tampering attacks can almost be resisted by means of mutual authentication between intermediate *** approach avoids the traditional anti-tampering attack algorithm over-reliant on the source *** security analysis and simulation results show that our scheme can effectively resist the joint attacks and optimize the network performance.

关键词： delay tolerant networks（DTNs） network coding joint-attack

来源：评论

学校读者我要写书评

暂无评论

QoE-driven scheme for multimedia content dissemination in Device-to-Device communication

QoE-driven scheme for multimedia content dissemination in De...

引用

International wireless communications and Mobile Computing Conference, IWCMC

作者： Aiqing Zhang Liang Zhou Lei Wang Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications China National Mobile Communications Research Laboratory Southeast University

Device-to-Device (D2D) communication has been proposed to be a promising data offloading solution in the coming big data age, with multimedia dominating the digital contents. As quality of experience (QoE) is the major determining factor in the success of new multimedia applications, we novelly propose a QoE-driven cooperative content dissemination (QeCS) scheme in the paper. Specifically, all the users predict the QoE of the potential connections characterized by mean opinion score (MOS) and send the results to the content provider (CP). Then CP formulates a weighted oriented graph based on the network topology and MOS of each potential connection. By factorizing the graph, the content dissemination fashion is established through seeking 1-factor with the maximum weight thus achieving maximum total user MOS.

关键词： Peer-to-peer computing Receivers Transmitters Yttrium Multimedia communication Mobile communication Graph theory

来源：评论

学校读者我要写书评

暂无评论

Compressive wideband spectrum sensing in CRNS under primary user emulation attack 10

Compressive wideband spectrum sensing in CRNS under primary ...

引用

10th International Conference on wireless communications, networking and Mobile Computing, WiCOM 2014

作者： Cao, K.T. Shao, H.Q. National Mobile Communications Research Laboratory Southeast University Nanjing China Key Lab of Broadband Wireless Commun. and Sensor Network Technology of the State Education Ministry Nanjing University of Posts and Telecommunications Nanjing China College of Software Beihang University Beijing China

ISBN: (纸本)9781849198455

Spectrum sensing in a wideband regime for cognitive radio network (CRN) faces considerably technical challenge due to the constraints on ADCs, especially in the presence of primary user emulation attack (PUEA) where some malicious users try to impersonate the primary user (PU) to prevent other secondary users (SUs) from accessing the idle spectrum. To address this issue, an eigenvalue-based compressive wideband spectrum sensing (ECWSS) scheme is proposed in this paper. ECWSS directly utilizes the compressive measurements based on compressive sampling (CS) theory to perform wideband spectrum sensing without requiring signal recovery. In ECWSS, the sensors around a SU carry out compressive sampling at the sub- Nyquist rate instead of the SU. Furthermore, the exact probability density function of extreme eigenvalues is used to set the threshold. Theoretical analysis and simulation results show that compared to the traditional sensing scheme, ECWSS has better detection performance and is more robust in the existence of PUEA.

关键词： Compressed sensing

来源：评论

学校读者我要写书评

暂无评论

Secure efficient routing based on network coding in the delay tolerant networks

Secure efficient routing based on network coding in the dela...

引用

IEEE International Conference on Software Engineering and Service Sciences (ICSESS)

作者： Jianmin Bao Shu Zhang Junjie Zhang Kun Wang Haifeng Hu Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing Univ. of Posts and Telecommunications) Nanjing University of Posts and Telecommunications Nanjing Jiangsu Province China

The Delay/Disruption Tolerant network (DTN) is characterized with long delay, high bit-error rate, intermittent connectivity and frequent partitions. Due to this, network coding is introduced to improve its transmission performance significantly. Numerous DTN routing algorithms based on network coding have been developed. However, they are susceptible to various malicious attacks. In this paper, we propose a new kind of networking scheme suitable to the DTN, which can resist the eavesdropping attacks to a certain extant. Firstly, we establish a DTN network model based on the packet path optimization allocation algorithm and redefine the packet format to meet the algorithm requirements. Meanwhile, to resist the dropping attacks, the source node dynamically adds redundancy factors at the certain time. Then the pollution attacks and the data tampering attacks can almost be resisted by means of mutual authentication between intermediate nodes. This approach avoids the traditional anti-tampering attack algorithm over-reliant on the source node. The security analysis and simulation results show that our scheme can effectively resist the joint attacks and optimize the network performance.

关键词： Routing network coding Delays Mathematical model Encoding Equations Security

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：