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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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Designing of Decision Criterion on FCrSK in Time-Frequency Dual Selective Channel 22

Designing of Decision Criterion on FCrSK in Time-Frequency D...

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22nd IEEE International Conference on communication technology, ICCT 2022

作者： Nie, Xiaohong Yang, Chao Wang, Linan Zhang, Jing Zheng, Lin Science and Technology on Communication Networks Laboratory Hebei Shijiazhuang China Guilin University of Electronic Technology Key Lab. of Cognitive Radio and Information Processing Ministry of Education Guilin541004 China

ISBN: (纸本)9781665470674

With the increasement of frequency band and platform mobility, communication system faces more severe time-frequency double dispersion influence. Folded chirp-rate shift keying (FCrSK) modulation technique has been proposed to solve communication transmission problem in high dynamic doppler channel owe to its time-frequency shift invariance. However, it dose not consider some influence of time-frequency dual selective channel (TDSC). In this paper, spectrum structure of FCrSK after dechirp will be deduced in TDSC and a decision criterion for FCrSK is designed from spectral energy concentration to utilize multipath energy. And this decision criterion is more suitable for FCrSK in TDSC than frequency domain peak to average ratio (FPAR). Besides, the system has no rely on channel state information and has better performance at high SNR in TDSC than Lora. Furthermore, it is superior to Lora in and time-varing doppler channel. So FCrSK with this criterion can provide a good way for high reliability and low latency communication in future. © 2022 IEEE.

关键词： Channel state information

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Wireless communication Signal Strength Prediction Method Based on the K-nearest Neighbor Algorithm 5th

Wireless Communication Signal Strength Prediction Method Bas...

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5th International Conference of Pioneer Computer Scientists, Engineers and Educators, ICPCSEE 2019

作者： Chen, Zhao Xiong, Ning Wang, Yujue Ding, Yong Xiang, Hengkui Tang, Chenjun Liu, Lingang Zou, Xiuqing Luo, Decun Key Lab on Cognitive Radio and Information Processing School of Information and Communication Guilin University of Electronic Technology Guilin541004 China Guangxi Key Laboratory of Cryptography and Information Security School of Computer Science and Information Security Guilin University of Electronic Technology Guilin541004 China

ISBN: (纸本)9789811501173

Existing interference protection systems lack automatic evaluation methods to provide scientific, objective and accurate assessment results. To address this issue, this paper develops a layout scheme by geometrically modeling the actual scene, so that the hand-held full-band spectrum analyzer would be able to collect signal field strength values for indoor complex scenes. An improved prediction algorithm based on the K-nearest neighbor non-parametric kernel regression was proposed to predict the signal field strengths for the whole plane before and after being shield. Then the highest accuracy set of data could be picked out by comparison. The experimental results show that the improved prediction algorithm based on the K-nearest neighbor non-parametric kernel regression can scientifically and objectively predict the indoor complex scenes’ signal strength and evaluate the interference protection with high accuracy. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Spectrum analyzers

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Zero Watermarking Algorithm for Medical Image Based on Resnet50-DCT

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Computers, Materials & Continua 2023年第4期75卷 293-309页

作者： Mingshuai Sheng Jingbing Li Uzair Aslam Bhatti Jing Liu Mengxing Huang Yen-Wei Chen School of Information and Communication Engineering Hainan UniversityHaikou570228China State Key Laboratory of Marine Resource Utilization in the South China Sea Hainan UniversityHaikou570228China School of Computer Science and Technology Hainan UniversityHaikou570228China Research Center for Healthcare Data Science Zhejiang LabHangzhou311121China Graduate School of Information Science and Engineering Ritsumeikan UniversityKyoto5258577Japan

Medical images are used as a diagnostic tool, so protecting theirconfidentiality has long been a topic of study. From this, we propose aResnet50-DCT-based zero watermarking algorithm for use with medicalimages. To begin, we use Resnet50, a pre-training network, to draw out thedeep features of medical images. Then the deep features are transformedby DCT transform and the perceptual hash function is used to generatethe feature vector. The original watermark is chaotic scrambled to get theencrypted watermark, and the watermark information is embedded into theoriginal medical image by XOR operation, and the logical key vector isobtained and saved at the same time. Similarly, the same feature extractionmethod is used to extract the deep features of the medical image to be testedand generate the feature vector. Later, the XOR operation is carried outbetween the feature vector and the logical key vector, and the encryptedwatermark is extracted and decrypted to get the restored watermark;thenormalized correlation coefficient (NC) of the original watermark and therestored watermark is calculated to determine the ownership and watermarkinformation of the medical image to be tested. After calculation, most ofthe NC values are greater than 0.50. The experimental results demonstratethe algorithm’s robustness, invisibility, and security, as well as its ability toaccurately extract watermark information. The algorithm also shows goodresistance to conventional attacks and geometric attacks.

关键词： Medical images deep residual network resnet50-DCT privacy protection robustness security

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A new approach for encryption system based on block cipher algorithms and logistic function

A new approach for encryption system based on block cipher a...

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IEEE SSD International Multi-Conference on Systems, Signals and Devices

作者： Fatma Sbiaa Adel Baganne Medien Zeghid Rached Tourki Faculty of Sciences University of Monastir Monastir Tunisia Laboratory of Information Science and Technology communication and Knowledge (Lab-STICC) University of South Brittany Lorient France

In this paper, a new approach for encryption system based on a block cipher algorithm and a logistic function is proposed. The main goal of the present work is to study the weaknesses of different operating modes in order to propose appropriate modifications. The experimental results show that the proposed modifications can be easily implemented and they do not need high level of consumption or hardware occupation. In addition, the security analysis proved the resistance of the new algorithms to statistical attacks, differential attacks and initial key sensibility.

关键词： Decision support systems Chaos Sensitivity Indexes

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Quantum-enhanced interferometry with asymmetric beam splitters

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science China(Physics,Mechanics & Astronomy) 2020年第6期63卷 22-32页

作者： Wei Zhong Fan Wang Lan Zhou Peng Xu YuBo Sheng Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China

In this paper,we investigate the phase sensitivities in two-path optical interferometry with asymmetric beam ***,we present the optimal conditions for the transmission ratio and the phase of the beam splitter to gain the highest sensitivities for a general class of non-classical states with parity ***,we address the controversial question of whether the scheme with a combination of coherent state and photon-added or photon-subtracted squeezed vacuum state is better or worse than the most celebrated one using a combination of coherent state and squeezed vacuum state.

关键词： quantum metrology quantum Fisher information Heisenberg limit optical interferometry

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A Fast Method for Shortest-Path Cover Identification in Large Complex Networks

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Computers, Materials & Continua 2020年第5期63卷 705-724页

作者： Qiang Wei Guangmin Hu Chao Shen Yunfei Yin School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu611731China National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu610041China MOE Key Lab for Intelligent Networks and Network Security Xi’an Jiaotong UniversityXi’an710049China The Electronic Engineering Department Universidad de SevillaSeville41004Spain School of Astronautics Harbin Institute of TechnologyHarbin150001China

Fast identifying the amount of information that can be gained by measuring a network via shortest-paths is one of the fundamental problem for networks exploration and ***,the existing methods are time-consuming for even moderate-scale *** this paper,we present a method for fast shortest-path cover identification in both exact and approximate scenarios based on the relationship between the identification and the shortest distance *** effectiveness of the proposed method is validated through synthetic and real-world *** experimental results show that our method is 105 times faster than the existing methods and can solve the shortest-path cover identification in a few seconds for large-scale networks with millions of nodes and edges.

关键词： Network discovery shortest-path cover shortest-path distance query large complex networks

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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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A semi-distributed network selection scheme in heterogeneous wireless networks

A semi-distributed network selection scheme in heterogeneous...

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6th International ICST Conference on Wireless Internet, WICON 2011

作者： Fan, Juan 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

Joint radio resource management (JRRM) mechanism helps to optimize the radio resource usage of heterogeneous wireless networks but the introduction of central new entity which manages the information of all networks in JRRM may require unbearable change to current network architecture. Aiming at easily integrating with existing and forthcoming heterogeneous wireless networks, this paper proposes a semi-distributed scheme without centralized entity, in which user terminal make decision on network selection through fuzzy neural network method based on local information and the selected network finishes the admission control to user terminal according to its actual resource condition. Our scheme is verified by the simulation in the UMTS/WLAN scenario and can effectively balance the load between the UMTS/WLAN networks while maintaining the level of blocking probability compared to traditional distributed WLAN-prefer algorithm. © 2012 ICST Institute for Computer science, Social Informatics and Telecommunications Engineering.

关键词： Blocking probability

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A full-rate cooperative communication strategy in wireless relay networks

A full-rate cooperative communication strategy in wireless r...

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6th International ICST Conference on Wireless Internet, WICON 2011

作者： Zhan, Lei Yang, Fei 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, we propose a new full-rate cooperative communication strategy in wireless relay networks without direct path between source and destination. This strategy coined full-rate amplify-and-forward (FRAF) utilizes multiple relay nodes to take turns to amplify and forward data package for the transmitter at different time slot. Thus the source node could continue sending without cessation. On the other hand, prevailing linear constellation precoding process is adopted at the source node to solve the problem caused by the imbalance of the error performance of the data sent at odd and even time slots. Furthermore, we analyze the outage probability and certificate that FRAF strategy can achieve the full diversity gain. The simulation results indicate that FRAF could improve the performance of the system effectively compared to the conventional amplify-and-forward (AF) and decode-and-forward (DF) strategy. © 2012 ICST Institute for Computer science, Social Informatics and Telecommunications Engineering.

关键词： Cooperative communication

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