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IEEE Aerospace Conference

作者： Ning Wang Chenguang Yang Michael R. Lyu Zhijun Li Department of Computer Science and Engineering The Chinese University of Hong Kong School of Computing and Mathematics Plymouth University Key Lab of Autonomous System and Network Control College of Automation Science and Engineering South China University of Technology

ISBN: (纸本)9781479916191

Tele-operation is a merging point of modern developments in robotics and communications technologies. Both traditional applications (e.g., mining) and emerging domains (e.g., microsurgery) benefit from the advancement of tele-robotic systems. Combining a local human operator and a remote autonomous robot, the tele-robotics systems could optimally exploit both the intelligence of human operator and the automation of robot. In a tele-operation scenario, the exchange of force and position signals, i.e., haptic feedback, can greatly extend human operator's capability of conducting complicated work through the robot in a remote environment. However, long-range communications usually suffer from the time delay problem caused by the inherent characteristics of communication channels. Delayed transmission of haptic signals may lead to instability in the closed-loop telerobot control system. Although much effort has been made in the control community to overcome this difficulty, and many approaches such as wave scattering, passivity, and small gain theorem have been employed as possible solutions, stability in haptic telerobot control remains a challenge. It has been noted that the neural path of human being is also subject to transmission delay as well. We know that in the presence of time delay in sensory feedback pathways, human neural control can easily maintain stability and even to show superior manipulation skills in unstable interaction scenarios. It has been discovered and reported that the operation stability of human beings could be achieved by well adjusting the mechanical impedance, i.e., the resistance to imposed motion, which is largely contributed by the spring-like property of muscles. Being investigated in robotics community for decades, impedance control has shown great advantage in terms of safety and flexibility over conventional position or force control. However, only until very recently our attention has been attracted to transferring a human operator

关键词： impedance Electromyogram Human Robot Force Astronauts Force control muscles robotics

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Development of A Biofeedback Enhanced Multimedia Game

Development of A Biofeedback Enhanced Multimedia Game

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第28届中国控制与决策会议

作者： Huaiwei Wu Chenguang Yang Ruowei Wang Chun-Yi Su MOE Key Lab of Autonomous System and Network Control School of Automation Science and EngineeringSouth China University of Technology Zienkiewicz Centre for Computational Engineering Swansea University Department of Mechanical and Industrial Engineering Concordia University

ISBN: (纸本)9781467397155

As a frontier technology,biofeedback has been widely used for psychological treatment,control and many other human-computer interaction *** this paper,a multimedia game based on biofeedback technology is developed,including two main parts,the design of a brain computer interface(BCI) and the design of a multimedia *** the BCI design part,eletroencephlogram(EEG) signals are collected and sent to a processing module for *** EEG signals will be classified into two categories:movement or *** these classified results will be sent to the game process to control the action of a virtual car in real *** the second part,the design of a multimedia game via QTCreator is *** mainly use QTCreator's Graphics View Frame to develop the *** last we will introduce how to combine MATlab,SCAN4.5 and QTCreator together to play the game with biofeedback.

关键词： Development of A Biofeedback Enhanced Multimedia Game

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Synergetic Learning of Heterogeneous Temporal Sequences for Multi-Horizon Probabilistic Forecasting

arXiv

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arXiv 2021年

作者： Li, Longyuan Zhang, Jihai Yan, Junchi Jin, Yaohui Zhang, Yunhao Duan, Yanjie Tian, Guangjian MoE Key Lab of Artificial Intelligence AI Institute Shanghai Jiao Tong University China State Key Lab of Advanced Optical Communication System and Network Shanghai Jiao Tong University China Department of Computer Science and Engineering Shanghai Jiao Tong University China Huawei Noah’s Ark Lab China

Time-series is ubiquitous across applications, such as transportation, finance and healthcare. Time-series is often influenced by external factors, especially in the form of asynchronous events, making forecasting difficult. However, existing models are mainly designated for either synchronous time-series or asynchronous event sequence, and can hardly provide a synthetic way to capture the relation between them. We propose Variational Synergetic Multi-Horizon network (VSMHN), a novel deep conditional generative model. To learn complex correlations across heterogeneous sequences, a tailored encoder is devised to combine the advances in deep point processes models and variational recurrent neural networks. In addition, an aligned time coding and an auxiliary transition scheme are carefully devised for batched training on unaligned sequences. Our model can be trained effectively using stochastic variational inference and generates probabilistic predictions with Monte-Carlo simulation. Furthermore, our model produces accurate, sharp and more realistic probabilistic forecasts. We also show that modeling asynchronous event sequences is crucial for multi-horizon time-series forecasting. © 2021, CC BY.

关键词： Time series

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C-band real-time 400/300 Gb/s OOK bidirectional interconnection over 20 km multicore fibers

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Chinese Optics Letters 2017年第8期15卷 12-16页

作者：冯振华计红林唐明义理林甘霖薛雷吴琼李博睿赵佳佳童维军付松年刘德明胡卫生 Wuhan National Lab for Optoelectronics (WNLO) & National Engineering Laboratory for Next Generation Internet Access System School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Advanced Optical Communication Systems and Network Shanghai Jiao Tong University Shanghai 200240 China State Key Laboratory of Optical fiber and Cable Manufacture Technology Yangtze Optical fiber and Cable Joint Stock Limited Company (YOFC) Wuhan 430073 China

With the increasing capacity demands fueled by the emerging heterogeneous and bandwidth-intensive applica- tions, such as cloud computing, 4K/8K videos, and virtual reality （VR）, the need for low-cost, power-efficient, and high-density short-reach optical interconnects operating at 100 Gb/s and beyond has drawn significant research efforts.

关键词： OOK ODI C-band real-time 400/300 Gb/s OOK bidirectional interconnection over 20 km multicore fibers over time real

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Interference avoidance mechanisms in the hybrid cellular and device-to-device systems

Interference avoidance mechanisms in the hybrid cellular and...

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IEEE International Symposium on Personal, Indoor and Mobile Radio communications (PIMRC)

作者： Tao Peng Qianxi Lu Haiming Wang Shaoyi Xu Wenbo Wang Wireless Signal Processing and Network Lab Key laboratory of Universal Wireless Communication Ministry of Education Beijing University of Posts and Telecommunications China Nokia Device Research and Development/Wireless System Research Nokia (China) Investment Corporation Limited China

A hybrid system of cellular mode and device-to-device (D2D) mode is considered in this paper, where the cellular uplink resource is reused by the D2D transmission. In order to maximize the overall system performance, the mutual interference between cellular and D2D sub-systems has to be addressed. Here, two mechanisms are proposed to solve the problem: One is mitigating the interference from cellular transmission to D2D communication by an interference tracing approach. The other one is aiming to reduce the interference from D2D transmission to cellular communication by a tolerable interference broadcasting approach. Both mechanisms can work independently or jointly to synergy the transmission in the hybrid system for the efficient resource utilization. In the end, simulation is conducted to study the performance of the proposed schemes, which shows satisfying results.

关键词： Interference Cellular networks Resource management Land mobile radio cellular systems system performance Broadcasting communication system control Mobile communication Signal processing laboratories

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A game-theoretic approach to distributed power control algorithm for hybrid systems

A game-theoretic approach to distributed power control algor...

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IEEE International Symposium on Personal, Indoor and Mobile Radio communications (PIMRC)

作者： Qianxi Lu Tao Peng Haiming Wang Shaoyi Xu Wenbo Wang Chao Hu Wireless Signal Processing and Network Lab Key laboratory of Universal Wireless Communication Ministry of Education Beijing University of Posts and Telecommunications China Nokia Device Research and Development/Wireless System Research Nokia (China) Investment Corporation Limited China

A hybrid system of cellular mode and the peer-to-peer (P2P) mode is considered in this paper, where the cellular uplink resource is reused by the P2P transmission. In the objective of overall system throughput maximization, we addresses the problem of distributed power control of P2P transmission in the hybrid system model. Some preliminary results of the problem are presented first to investigate the optimal solution of the problem. Based on these results, by applying the game theory approach, that is, potential game, an asynchronously distributed power control scheme is devised. The associated properties of the proposed scheme are analyzed, including the global convergence, the conditional optimality and the Lyapunov stability. In the end, simulation is conducted to study the performance of the proposed scheme, which shows satisfying results.

关键词： Power control Cellular networks Land mobile radio cellular systems Signal processing algorithms Throughput Power system modeling Game theory Lyapunov method Interference Resource management

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Automatic Prompt Generation Based on Combinatorial Relationships in Reasoning Problems

Automatic Prompt Generation Based on Combinatorial Relations...

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Natural Language Processing (ICNLP), International Conference on

作者： Tong Wu Hao He School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai China State Key Lab of Advanced Optical Communication System and Network School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai China

ISBN: (数字)9798350349115

ISBN: (纸本)9798350349122

The effectiveness of Large Language Models (LLMs) in tasks involving reasoning is significantly influenced by the structure and formulation of the prompts, contemporary research in prompt engineering aims to help LLMs better understand the paradigms of reasoning question (e.g., CoT). However, these efforts have either struggled to effectively incorporate external knowledge into single prompt or integrating entire corpus information, often fails to significantly enhance the reasoning capabilities of LLMs. This paper introduces a novel prompting method that incorporates implicit hints that represent logical combinatorial relationships between known conditions in reasoning problems, guiding LLMs to think correctly in the initial steps of reasoning for such problems. Extensive and comprehensive experiment results on four different reasoning problem datasets indicate that our proposed method improved accuracy while maintaining efficiency.

关键词： Accuracy Large language models Predictive models Cognition Natural language processing Prompt engineering

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Average Channel Capacity Analysis for Visible Light communications with Random Receivers

Average Channel Capacity Analysis for Visible Light Communic...

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International Conference on Wireless communications and Signal Processing (WCSP)

作者： Xian-Tao Fu Rong-Rong Lu Sheng-Hong Lin Jin-Yuan Wang Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing China Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai China Key Laboratory of Opto-technology and Intelligent Control Ministry of Education Lanzhou Jiaotong University Lanzhou China National Local Joint Engineering Research Center for Communication and Network Technologies Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (数字)9781728172361

ISBN: (纸本)9781728172378

For indoor visible light communications (VLC), the receivers are usually set to be fixed ones in previous studies. However, the locations and orientations of receivers are affected by random factors in practical VLC systems. In this paper, the performance of VLC with random receivers is investigated. We consider an VLC system, which consists of a transmitter and a receiver. The main noise is additive white Gaussian noise. Two random factors (i.e., random location and random orientation) of the receiver are considered. Based on the established system model, closed-form expressions of the average channel capacity for systems with random location and random orientation are derived, respectively. Numerical results verify the accuracy of the derived theoretical expressions. Moreover, the impacts of the nominal optical intensity, the dimming target, the transmitter height and the Lambertian emission order on system performance are also discussed.

关键词： Visible light communication Optical transmitters Optical receivers Light emitting diodes Channel capacity High-speed optical techniques Wireless communication

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A 4-Channel Ultrafast Wavelength-Swept REC-DFB Laser Array for Fiber Bragg Grating Interrogation

A 4-Channel Ultrafast Wavelength-Swept REC-DFB Laser Array f...

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2023 Asia communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Meng, Lingxin Dai, Pan Ban, Qilu Xu, Kaichuan Wang, Jiacheng Li, Zhen Wang, Feng Zeng, Jie Li, Shaobo Ma, Xiang Chen, Xiangfei Res. Center of Precision Photonics Integration and System Application of the Ministry of Education College of Engineering and Applied Sciences Nanjing University Key Lab. of Intelligent Optical Sensing and Manipulation of the Ministry of Education Engineering National Laboratory of Solid State Microstructures Nanjing210023 China Nanjing University of Aeronautics and Astronautics State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing210016 China The 54th Research Institute of China Electronics Technology Group Corporation Optical Communication Research and Development Center Shijiazhuang050081 China

ISBN: (纸本)9798350312614

We present a four-channel ultrafast wavelength-swept distributed feedback (DFB) semiconductor laser array based on the reconstruction-equivalent-chirp (REC) technique using instantaneous injection current modulation. With the aid of our designed laser driving circuit system consists of the microcontroller unit (MCU), field-programmable gate array (FPGA) and negative metal-oxide-semiconductor field effect transistors (n-MOSFETs), the precise pulse driving current for the 4-channel wavelength-swept REC-DFB laser array can be generated and a fast tuning of 16.424 nm within 10 μs is achieved. To further investigate the tuning performance of the proposed wavelength-swept laser source, we then applied it to the fiber Bragg grating (FBG) interrogation system and four FBG temperature sensor arrays were successfully demodulated. The development of high-efficient optical sensing systems heavily relies on the significance of the ultrafast wavelength-swept laser source, which has the potential to greatly enhance FBG interrogator performance in the future. © 2023 IEEE.

关键词： DFB laser array fast wavelength-swept fiber Bragg grating interrogation REC technique

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Two modified L2S interface methods for mixed modulation scheme

Two modified L2S interface methods for mixed modulation sche...

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IEEE International Symposium on Personal, Indoor and Mobile Radio communications (PIMRC)

作者： Hang Long Wenbo Wang Kan Zheng Young-il Kim Wireless Signal Processing and Network Lab Key Laboratory of Universal Wireless Communication Ministry of Education Beijing University of Posts and Telecommunications Beijing China Wireless Signal Processing and Network Lab Ministry of Education Beijing University of Posts & Telecommunications Beijing China Electronics and Telecommunications Research Institute (ETRI) Wireless System Research Group Daejeon Korea 305-700

In current wireless system performance evaluation, separate link and system level simulators are needed due to less computation complexity. The link-to-system (L2S) interface method to interconnect two simulators is essential and need careful definition. Exponential effective signal-to-interference-and-noise ratio mapping (EESM) is a typical L2S interface method suitable for evaluation of orthogonal frequency division multiplexing systems. When itpsilas used in simulation, all the sub-carriers for one user have to use the same modulation and coding scheme. In this paper, two modified L2S interface EESM methods are presented based on the idea that a high-level modulation symbol could be equivalently converted to several low-level modulation symbols with different reliability. As a result, usage of EESM can be extended to the situation that sub-carriers for one user use different modulation schemes.

关键词： Signal to noise ratio OFDM Computational modeling Modulation coding Mutual information Wireless communication AWGN Signal processing laboratories Additive white noise

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