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Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

Light(Science & Applications) 2020年第1期9卷 441-449页

作者： Qingsong Shan Changting Wei Yan Jiang Jizhong Song Yousheng Zou Leimeng Xu Tao Fang Tiantian Wang Yuhui Dong Jiaxin Liu Boning Han Fengjuan Zhang Jiawei Chen Yongjin Wang Haibo Zeng MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics&NanomaterialsSchool of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China Peter Grünberg Research Center Laboratory of Broadband Wireless Communication and Sensor Network TechnologyMinistry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China

Light fidelity(LiFi),which is emerging as a compelling technology paradigm shifting the common means of highcapacity wireless communication technologies,requires wearable and full-duplex compact design because of its great significance in smart wearables as well as the‘Internet of Things’.However,the construction of the key component of wearable full-duplex LiFi,light-emitting/detecting bifunctional fibres,is still challenging because of the conflicting process between carrier separation and recombination,as well as the highly dynamic film-forming ***,we demonstrate light-emitting/detecting bifunctional fibres enabled by perovskite QDs with hybrid *** hybrid perovskite inks endow fibres with super-smooth QD ***,combined with the small exciton binding energy and high carrier mobility of perovskite QDs,enables successful integration of electroluminescence and photodetection into *** bifunctional fibres possess the narrowest electroluminescence full width at half maximum of ~19 nm and,more importantly,the capability for simultaneously transmitting and receiving *** successful fabrication of narrow emission full-duplex LiFi fibres paves the way for the fabrication and integration of low crosstalk interoperable smart wearables.

关键词： process perovskite functional

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PHY Security Enhancement Exploiting STAR-RIS for Dual-Functional Radar-communication

PHY Security Enhancement Exploiting STAR-RIS for Dual-Functi...

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IEEE International Conference on communications Workshops, ICC

作者： Chao Wang Cheng-Cai Wang Zan Li Derrick Wing Kwan Ng Kai-Kit Wong State Key Laboratory of Integrated Service Network Xidian University Xi'an China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology NJUPT Nanjing China School of Automation Science and Electrical Engineering Beihang University Beijing China School of Electrical Engineering and Telecommunications University of New South Wales Sydney Australia Department of Electronic and Electrical Engineering University College London London UK

Considering a simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RIS)-aided dual-functional radar-communications (DFRC) system, this paper proposes a symbol-level precoding-based scheme for enhancing the physical layer (PHY) security of the confidential information transmission and performing target sensing simultaneously. Specifically, the STAR-RIS-aided DFRC system design objective is to maximize the average received radar sensing power subject to the quality-of-service constraints for multiple communication users, the security constraint for multiple potential eavesdroppers, as well as various practical waveform design restrictions. However, the formulated problem is challenging to handle due to its nonconvexity. To address these issues, we propose a distance-majorization induced low-complexity algorithm to obtain an efficient solution. Simulation results confirm the effectiveness of the STAR-RIS in improving the DFRC performance.

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Traffic Matrix Prediction in SDN based on Spatial-Temporal Residual Graph Convolutional network

Traffic Matrix Prediction in SDN based on Spatial-Temporal R...

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第35届中国控制与决策会议

作者： Xintong Wang Yibo Sun Xuan Wang Enliang Wang Zhixin Sun Post Big Data Technology and Application Engineering Research Center of Jiangsu Province Nanjing University of Posts and Telecommunications Post Industry Technology Research and Development Center of the State Posts Bureau (Internet of Things Technology) Nanjing Universiry of Posts and Telecommunications Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications School of Information Technology and Electrical Engineering The University of Queensland Brisbane

Traffic prediction is the basis for dynamic network services and resource *** Defined networking(SDN) provides a global view for network measurement and management,and a reliable way for network information collection and network traffic ***,SDN traffic prediction model enabled by deep learning mainly focuses on mining the temporal correlation of traffic data,while the modeling of its spatial correlation remains to be *** the perspective of the problem,a novel Spatial-Temporal Residual Graph Convolutional network(STRGCN) model for SDN Traffic Matrix(TM) prediction is *** with SDN network topology,TM prediction is defined as time series data prediction in non-Euclidean *** GatedConv Blocks are based on Gated Convolutional Layer,and Spatial Graph-Conv Blocks are based on Graph Convolutional network(GCN).Through identity mapping between SpatialTemporal Conv Blocks,the deep spatial and temporal features extraction is *** by TM data from CERNET and GEANT datasets,the accuracy and the timely performance of our model are *** results suggest that the general performance of STRGCN for TM prediction in SDN is superior to the current deep learning models.

关键词： software defined networking traffic prediction traffic matrix graph convolutional neural network spatialtemporal residual graph network

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Design and Experiment of Smart Fire Electric Power Monitoring System Based on the Cyber-Physical Model

Design and Experiment of Smart Fire Electric Power Monitorin...

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Information technology,Big Data and Artificial Intelligence (ICIBA), International Conference on IEEE International Conference on

作者： Leiji Zhu Wei Yao Yong Xiong Broadband Wireless Communication Technology Laboratory Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Key Laboratory of Wireless Sensor Network and Communication Chinese Academy of Sciences Shanghai China

ISBN: (纸本)9781665428781

In order to realize smart fire electric power alarm monitoring, this paper designs a smart fire electric power monitoring system based on the cyber-physical model. In the physical space, the system receives the information, including the voltage, temperature, current, instantaneous power and other characteristic data from the SDF400 fault electric arc detection sensor. In the information space, the system builds a feature anomaly judgment model based on the kmeans++ clustering algorithm and the mathematical criterion including bessel formula and raida criterion. Experimental test data show that the anomaly judgment model has an average 92.4% correct alarm rate and 2% false alarm rate. The precise results of the model provide a basis for smart fire electric power safety monitoring and support smart power control application scenarios such as smart circuit closing.

关键词： Temperature sensors Temperature measurement Temperature distribution Power control Mathematical models Power systems Safety

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Dynamic Calculation Model for Pressure Safety Monitoring of Municipal Water Supply network with Interference Elimination Function between Neighboring Nodes

Dynamic Calculation Model for Pressure Safety Monitoring of ...

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IEEE Advanced Information technology, Electronic and Automation Control Conference (IAEAC)

作者： Leiji Zhu Yong Xiong Xiumei Yang Broadband Wireless Communication Technology Laboratory Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Key Laboratory of Wireless Sensor Network and Communication Chinese Academy of Sciences Shanghai China

ISBN: (数字)9781728180281

ISBN: (纸本)9781728180298

In order to monitor the pressure safety status of municipal water supply network, the dynamic calculation model of pressure safety monitoring of municipal water supply network with the function of eliminating interference between neighboring nodes was studied by using the Internet of things and data processing technology. Based on the calculation of the attenuation coefficient of pressure wave in municipal pipe network, this paper discusses the establishment method of neighbor coordinates between monitoring points by the constraint of pressure wave attenuation distance, and then combines the data processing technologies such as pressure mean value, pressure difference, pressure variance, pressure variance growth rate, etc., to construct a dynamic monitoring calculation model of pressure safety state with the function of eliminating interference between neighboring nodes. The research shows that the model can complete the dynamic calculation and real-time warning of the pressure safety state monitoring of the municipal water supply network through the acquisition, processing and feedback of the pressure of the municipal water supply network, realize the pressure safety state monitoring of the municipal water supply network, and improve the dynamic information safety management level of the municipal water supply network.

关键词： Water Safety management Attenuation Feature extraction Data processing Data models Monitoring

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Measuring the Orbital-Angular-Momentum Complex Spectrum of Light with the Fast Fourier Transform

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Physical Review Applied 2023年第1期20卷 014010-014010页

作者： Jialong Zhu Yihua Wu Le Wang Hailong Zhou Shengmei Zhao Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications (NUPT) Nanjing 210003 China School of Information Engineering Suqian University Suqian 223800 China Wuhan National Laboratory for Optoelectronics School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Ministry of Education Nanjing China National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093 China

Measuring the orbital-angular-momentum (OAM) complex spectrum of light is very important in OAM-based applications. In this paper, we propose and experimentally demonstrate a simple scheme to measure the OAM complex spectrum of light with the fast Fourier transform (FFT). The light with input OAM modes coaxially interferes with a Gaussian light beam that is generated locally to achieve the intensity distribution of the interference. By subtracting the intensity distribution of the input OAM light from this interference intensity distribution, the OAM complex spectrum can be extracted by employing the FFT transform on the result of the subtraction. In addition, we also present an approach to enlarge the range of detectable OAM modes (from 1 to 50) and analyze the effects of optical alignment and the number of superimposed OAM modes on the measurement results. The proposed scheme is demonstrated in a proof-of-principle experiment, where six superimposed OAM modes can be measured without error, with their average deviation of amplitude and phase being 0.07 and 0.308, respectively. The proposed scheme can exploit applications in some advanced domains, including OAM sensing, OAM imaging, optical communication decoding, and various other OAM-based systems.

关键词： Angular momentum of light Metrology Spatial profiles of optical beams Optical sources & detectors Optical spectroscopy

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Sequential 3→1 quantum random access code utilizing unsharp measurements

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Chinese Optics Letters 2021年第11期19卷 133-137页

作者： Zhiguang Pang Jiang Gao Tianlei Hou Min Wei Jian Li Qin Wang Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications(NUPT)Nanjing 210003China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education NUPTNanjing 210003China Telecommunication and Networks National Engineering Research Center NUPTNanjing 210003China

Quantum random access codes(QRACs) are important communication tasks that are usually implemented in prepare-andmeasure scenarios. The receiver tries to retrieve one arbitrarily chosen bit of the original bit-string from the code qubit sent by the sender. In this Letter, we analyze in detail the sequential version of the 3 → 1 QRAC with two receivers. The average successful probability for the strategy of unsharp measurement is derived. The prepare-and-measure strategy within projective measurement is also discussed. It is found that sequential 3 → 1 QRAC with weak measurement cannot be always superior to the one with projective measurement, as the 2 → 1 version can be.

关键词： quantum random access codes unsharp measurement prepare-and-measure scenario

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Optimization on Cooperative communications Based on network Coding in Multi-hop wireless networks 16

Optimization on Cooperative Communications Based on Network ...

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16th IEEE International wireless communications and Mobile Computing Conference, IWCMC 2020

作者： Bu, Xiande Liu, Chuan Yu, Qiang Yin, Lei Tian, Feng State Grid Laboratory of Electric Power Communication Network Global Energy Interconnection Research Institute Nanjing210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing Universityof Posts and Telecommunications Ministry of Education Nanjing210003 China

ISBN: (纸本)9781728131290

Cooperative communications (CC) based on network coding (NC) can significantly increase the capacity of wireless networks. In this paper, we investigate how to apply NC in multi-hop wireless networks with multiple relay nodes and multiple sessions to achieve more practical and general CC based on NC. Based on NC, we consider to jointly optimize relay node selecting, scheduling and flow routing in CC in a multi-hop wireless network. We not only construct a mathematical model but also formulate a maximum-minimum (Max-Min) optimization problem for it. Then we reformulate and solve it with CPLEX. Through simulation, we validate that the achieved rate gain by NC can be greatly improved than the one by CC. © 2020 IEEE.

关键词： Cooperative communication

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Trust Evaluation Algorithm based on Association Rule Extraction

Trust Evaluation Algorithm based on Association Rule Extract...

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Cryptography, Security and Privacy (CSP), IEEE International Conference on

作者： Yanchun Cui Kai Zhong Ansheng Yin School of Artificial Intelligence Nanjing Vocational College of Information Technology Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (数字)9781728186214

ISBN: (纸本)9781728186221

The current trust network evaluation models are mainly based on nodes' behavior, multi-attribute decision-making method or nodes' reputation. Due to the ambiguity and roughness of trust, these methods cannot express the trust of nodes well. Rule set matching algorithm can effectively deal with the ambiguity and roughness of trust. As the scale of the network expands and time increases, the scale of the trusted rule set will continue to grow, and at the same time, some of the rules collected may be invalid or even wrong. This paper proposes a rule extraction algorithm based on inclusion to improve the effectiveness and accuracy of rule set matching. Experimental results show that the algorithm is effective.

关键词： Privacy Conferences Decision making Cryptography

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Cross-modal communication technology: A survey

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Fundamental Research 2024年

作者： Wei, Xin Wu, Dan Zhou, Liang Guizani, Mohsen School of Communications and Information Engineering Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing 210003 China College of Communications Engineering Army Engineering University of PLA Nanjing 210007 China Machine Learning Department Mohamed Bin Zayed University of Artificial Intelligence Abu Dhabi 999041 United Arab Emirates

In the 5G era and beyond, multi-modal services that integrate audio, visual, and haptic signals are expected to become dominant applications. To support multi-modal services, the concept of cross-modal communications, which involves collab.rative audio-visual and haptic interactions, has emerged. Despite significant research about cross-modal communication technology being conducted, a comprehensive literature review on this topic is lacking. To fill this gap, this paper presents a detailed survey on cross-modal communication technology. First, it provides a highly summarized description of representative research attempts in audio-visual and haptic communications, which serve as the foundation for cross-modal communications. Then, it delves into various aspects of cross-modal communications, including architectural, cross-modal coding, cross-modal transmission, cross-modal signal reconstruction, the essence of semantics, and prototype systems. Finally, it discusses conclusions and future research directions. This paper is expected to promote the theoretical research and practical applications of cross-modal communications. © 2023

关键词： Audio-visual Cross-modal communications Haptic Multi-modal service Semantics

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