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2015 IEEE International Conference on Progress in Informatics and Computing(PIC 2015)

作者： Jiuhu Zheng Huanyan Qian Lie Wang School of Computer Science and Engineering Nanjing University of Science and Technology School of Information Technology Jiangsu Institute of Commerce Key Lab of Broadband Wireless Communication and Sensor Network Technology ( Nanjing University of Posts and Telecommunications) Ministry of Education National Mobile Communications esearch Laboratory Southeast University

In the view of the DV-Hop positioning algorithm which relies on the distance vector and beacon nodes, several aspects are improved: the average hop distance and hop count are corrected;a method to detect the abnormal distribution of beacon nodes is used to avoid the influence of the abnormal distribution on the positioning performance. The proposed algorithm is simple and effective. Simulation results show that compared with the traditional DV-Hop algorithm, the performance of the proposed algorithm is greatly *** performance is even even superior to that of the algorithm mentioned in literature [10]

关键词： wireless sensor network DV-Hop algorithm node positioning positioning accuracy

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Packet sending algorithm based on bundle protocol in DTN networks

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Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and technology Edition) 2012年第SUPPL. 1期42卷 285-289页

作者： Wang, Kun Yu, Yue Zhang, Yu-Hua Guo, Huang Wang, Lin-Lin Key Lab. of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education Nanjing University of Posts and Telecommunications Nanjing 210003 China

Bundle and block were introduced into DTN transmission protocol, which shred data into bits to deal with frequent interruption in DTN network. Bundle and LTP protocol in DTN transmission layer were put forward, and the impact of block size on transmission efficiency was investigated when network environment probably vary dramatically in a short time. Finally we put forward a Bundle sending algorithm that dynamically changes its strategy in DTN network to achieve the best transmission efficiency and system performance. Simulation results show that selecting proper size of data block can increase the transmission effectiveness.

关键词： Efficiency

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A novel Terahertz Integrated Horn Antenna on Silicon Substrate

A novel Terahertz Integrated Horn Antenna on Silicon Substra...

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2016 2nd International Conference on Advances in Mechanical Engineering and Industrial Informatics(AMEII 2016)

作者： Lin Guo Haixia Tang Lian Ji Yongpeng Wu Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationCollege of Internet of ThingsNanjing University of Posts and Telecommunications College of Energy Nanjing University of Technology College of Communication and Information Engineering Institute for Digital CommunicationsUniversitüt Erlangen-Nürnberg

ISBN: (纸本)9781510823808

This paper reports the design and analysis of a novel pyramidal horn antenna based on Micro Electro Mechanical Systems(MEMS) technology,which is used in terahertz(THz) *** structure of the antenna includes two parts,pyramidal horn structure and rectangle waveguide for feed,the fabrication of the structure needs only one wafer,and the antenna can be easily integrated with other parts of on-chip *** are many tunable parameters of the horn,so that high performance THz antenna can be achieved by optimizing these *** proposed antenna can be manufactured by MEMS processing with low fabrication cost,suitable for many terahertz systems.

关键词： Terahertz(THz) wave micro-electromechanical Systems(MEMS) silicon substrate On-chip antenna horn antenna

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A novel neural network optimized by Quantum Genetic Algorithm for signal detection in MIMO-OFDM systems

A novel neural network optimized by Quantum Genetic Algorith...

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IEEE Symposium on Computational Intelligence in Control and Automation, CICA

作者： Fei Li Min Zhou Haibo Li Department of Applied Physics and Electronics Umeå University Umea Sweden Institute of Signal Processing and Transmission Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing China

Neural networks can easily fall into a local extremum and have slow convergence rate. Quantum Genetic Algorithm (QGA) has features of small population size and fast convergence. Based on the investigation of QGA, we propose a novel neural network model, Radial Basis Function (RBF) networks optimized by Quantum Genetic Algorithm (QGA-RBF model). Then we investigate the performance of the proposed QGA-RBF on solving MIMO-OFDM signal detection problem. A novel signal detector based on QGA-RBF for MIMO-OFDM system is also proposed. The simulation results show that the proposed detector has more powerful properties in bit error rate than QGA based detector, RBF based detector and MMSE algorithm based detector, namely a 4-6 dB gain in performance can be achieved. The performance of the proposed detector is closer to optimal, compared with the other detectors.

关键词： Radial basis function networks Genetic algorithms Detectors Convergence Artificial neural networks Logic gates OFDM

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Quantum Secure Direct communication with Quantum Memory

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Physical Review Letters 2017年第22期118卷 220501-220501页

作者： Wei Zhang Dong-Sheng Ding Yu-Bo Sheng Lan Zhou Bao-Sen Shi Guang-Can Guo Key Laboratory of Quantum Information Chinese Academy of Sciences University of Science and Technology of China Hefei Anhui 230026 China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China Hefei Anhui 230026 China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China

Quantum communication provides an absolute security advantage, and it has been widely developed over the past 30 years. As an important branch of quantum communication, quantum secure direct communication (QSDC) promotes high security and instantaneousness in communication through directly transmitting messages over a quantum channel. The full implementation of a quantum protocol always requires the ability to control the transfer of a message effectively in the time domain; thus, it is essential to combine QSDC with quantum memory to accomplish the communication task. In this Letter, we report the experimental demonstration of QSDC with state-of-the-art atomic quantum memory for the first time in principle. We use the polarization degrees of freedom of photons as the information carrier, and the fidelity of entanglement decoding is verified as approximately 90%. Our work completes a fundamental step toward practical QSDC and demonstrates a potential application for long-distance quantum communication in a quantum network.

关键词： Quantum communication Quantum entanglement Quantum information with atoms & light Quantum memories Atomic ensemble

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An anonymous ONS resolving model with trust mechanism

Boletin Tecnico/Technical Bulletin

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Boletin Tecnico/Technical Bulletin 2017年第3期55卷 111-118页

作者： Wang, Huqing Sun, Zhixin College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing210016 China College of Communication and Information Engineering Nanjing University of Posts and Telecommunications Nanjing210003 China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing Nanjing210003 China

Security of the Object Naming Service (ONS) resolving model is discussed in this paper and an anonymous ONS resolving model with trust mechanism is presented. This model has the following characteristics: firstly, the zero knowledge proof protocol based on elliptic curve is applied;secondly, only certifier and verifier are involved during certification, which can get rid of the bondage of trusted third-party platform;and thirdly, in order to improve efficiency, the concept of trust value is introduced. Once certified, many times of resolving services can be provided. The number of resolving service is determined by trust value. Through theoretical analysis and experimental simulation, the model has the advantages of creativity, anonymity, feasibility, and resistance against replay attack.

关键词： Internet of things

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The Neighbors Selection Algorithm in WSN for routing and localization

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Journal of Information and Computational Science 2012年第4期9卷 1017-1025页

作者： Ma, Runze Yu, Zhijun Liu, Haitao Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Key Lab of Wireless Sensor Network and Communication Shanghai 200050 China Wuxi Sensing Net Industrialization Research Institute Wuxi Jiangsu 214135 China

There are some problems on the neighbor nodes selection method in wireless sensor networks. The Neighbors Selection Algorithm, based on the communication energy consumption between pairs of nodes, is proposed and applied to enhance the DV routing protocol and DV-Hop localization algorithm. According to the simulation results, in the networks where the node radio range is larger than the average distance between adjacent nodes, the modified routing method could cut down the routing energy consumption, and the modified localization algorithm could achieve better localization accuracy. Copyright © 2012 Binary Information Press.

关键词： Routing protocols

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Proposal of a free-space-to-chip pipeline for transporting single atoms

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Physical Review A 2023年第3期108卷 033108-033108页

作者： Aiping Liu Jiawei Liu Zhanfei Kang Guang-Jie Chen Xin-Biao Xu Xifeng Ren Guang-Can Guo Qin Wang Chang-Ling Zou Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China Broadband Wireless Communication and Sensor Network Technology Key Lab of Ministry of Education Nanjing University of Posts and Telecommunications Nanjing 210003 China CAS Key Laboratory of Quantum Information University of Science and Technology of China Hefei 230026 China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Hefei 230026 China

A free-space-to-chip pipeline is proposed for the efficient transportation of single atoms from a magneto-optical trap to an on-chip evanescent-field trap. Due to the reflection of the dipole laser on the chip surface, the conventional conveyor-belt approach can transport only atoms in close proximity to the chip surface, with a distance of about one wavelength. This limitation hinders the efficient interaction between the atom and the on-chip waveguide devices. Here, a two-layer photonic chip architecture is proposed to realize a free-space-to-chip atom pipeline. By employing a diffraction beam of the integrated grating with an incident angle of the Brewster angle, the reflection of the dipole laser is suppressed, allowing the atoms to be brought to the chip surface with a distance of only 100nm. The pipeline is verified numerically and provides a reliable atom source for a hybrid photonic-atom chip.

关键词： Atom & ion trapping & guiding Integrated optics Interference & diffraction of light Light propagation, transmission & absorption Nanophotonics Polarization of light Atoms Trapped atoms Two-level models

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Energy and Delay Co-aware Computation Offloading with Deep Learning in Fog Computing networks

Energy and Delay Co-aware Computation Offloading with Deep L...

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IEEE International Conference on Performance, Computing and communications (IPCCC)

作者： Xi Zhu Siguang Chen Songle Chen Geng Yang Jiangsu Key Lab of Broadband Wireless Communication and Internet of Things Nanjing University of Posts and Telecommunications Nanjing China Jiangsu Engineering Research Center of Communication and Network Technology Nanjing University of Posts and Telecommunications Nanjing China

In data-rich everything connected world, the rapid and green data processing is essential, especially for some delay-sensitive and computation-intensive tasks. Motivated by these requirements, an energy and delay co-aware fog computation offloading mechanism is conceived in this paper. Specifically, we formulate a weighted sum minimization problem of task completion time and energy consumption at the local fog for achieving efficient task computation. Further, a deep learning-based joint offloading decision and resource allocation (DL-JODRA) algorithm is developed to address such problem by jointly optimizing offloading action, local CPU, bandwidth and external CPU occupation ratios. The optimal offloading decision based comprehensive optimization consideration of network resources further improves the network efficiency. Finally, the extensive simulation results demonstrate that the proposed DL-JODRA can achieve optimal offloading decision with low computation resource requirement and gain significant reduction on network costs (i.e., delay and energy) comparing with benchmark methods.

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Research on two-dimensional feature fusion algorithm of multi-sensors in wireless sensor networks

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Journal of Information and Computational Science 2011年第15期8卷 3647-3657页

作者： Bao, Bisai Wu, Jianrong Lou, Xiaojun Liu, Haitao Key Lab. of Wireless Sensor Network and Communication Shanghai Institute of Micro-System and Information Technology Chinese Academy of Science Shanghai 200050 China Wuxi SensingNet Industrialization Research Institute Wuxi 214135 China

Information fusion is an effective way to solve the problem of the limited of energy and bandwidth for wireless sensor networks, a novel strategy of two-dimensional feature fusion is proposed in this paper. The feature vectors of multi-sensors are first combined into a two-dimensional feature vector matrix. Then Two-Dimensional Principal Component Analysis is generalized for feature extraction from two-dimensional feature vector matrix to achieve multi-sensors feature fusion. The experimental results on the real signals of ground targets indicate that the dimension of fusion features is effectively reduced and the classification accuracy is increased significantly under two-dimensional feature fusion. They also demonstrate that two-dimensional feature fusion is more effective than the traditional feature fusion. © 2009 by Binary Information Press.

关键词： wireless sensor networks

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