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2023 9th International Conference on Signal Processing and Communication, ICSC 2023 2023年 vi-vii页

作者： Whittow, William G. Kurinec, Santosh K. Sharma, Satish K. Lall, Brejesh Pachori, Ram Bilas Deb, Sujay Karandikar, Abhay Sachan, Amit Wolfson School of Mechanical Electrical and Manufacturing Engineering Loughborough University LEICS LE11 3TU United Kingdom IEEE Electrical & Microelectronics Engineering Rochester Institute of Technology New York United States Department of Electrical and Computer Engineering San Diego State University United States Bharti School of Telecom Technology & Management India Department of Electrical Engineering Indian Institute of Technology Delhi India Department of Electronics and Communication Engineering Indraprastha Institute of Information Technology Delhi India The Department of Science & Technology Indian Institute of Technology Kanpur India Media Intelligence Jio India

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Variable Speed Drive Connected Motor Load Emulator for a Multi-Converter-Based Hardware Testbed System

IEEE Open Journal of Industry Applications

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IEEE Open Journal of Industry Applications 2021年 2卷 337-346页

作者： Wang, Shuyao Ma, Yiwei Wang, Jingxin Tolbert, Leon M. Wang, Fred Department of Electrical Engineering and Computer Science University of Tennessee KnoxvilleTN37996 United States KnoxvilleTN37932 United States Power Electronics and Electric Machinery Research Center Oak Ridge National Laboratory KnoxvilleTN37932 United States

A variable speed drive (VSD) based induction motor power emulator is presented in this paper, which is intended to be used in a real-time multi-converter-based hardware testbed (HTB) system. The presented HTB load emulator can accurately reflect the dynamic performance of a VSD-based load with multiple control algorithms without requiring significant computational resources and simulation time. Therefore, the developed VSD load emulator can not only mimic VSD-driven motor load performance, but also can be flexibly integrated into electric power grid emulators or simulators, which enable more detailed power grid analyses by providing a more accurate model for this particular type of load. This paper discusses the specification of the developed VSD-based load emulator, including multiple control schemes, and the physical realization in a power grid emulator. Finally, the accuracy of the VSD load emulator is demonstrated with experimental results. © 2020 IEEE.

关键词： Variable speed drives

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Spin−Orbit Torques Based on Topological Materials

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Accounts of Materials Research 2022年第10期3卷 1061-1072页

作者： Yi Wang Hyunsoo Yang Key Laboratory of Materials Modification by Laser Ion and Electron Beams(Ministry of Education)School of PhysicsDalian University of TechnologyDalian 116024China Department of Electrical and Computer Engineering National University of Singapore117576Singapore Centre for Advanced 2D Materials National University of Singapore117546Singapore

CONSPECTUS:Widespread applications of magnetic devices,such as magnetic random-access memory(MRAM),logic-in memory,and neuromorphic computing devices,require an efficient method to manipulate the local *** superior mechanism is the spin−orbit torque(SOT)associated with spin currents generated by charge currents in a material with strong spin−orbit coupling.A higher SOT efficiency(i.e.,a higher charge-to-spin conversion efficiency)is crucial for lowpower SOT device ***,materials possessing the merit of a high SOT are urgently desired for the innovation of SOT devices.

关键词： charge desired mechanism

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Map2Schedule: An End-to-End Link Scheduling Method for Urban V2V Communications

arXiv

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arXiv 2023年

作者： Zhang, Lihao Sun, Haijian Sun, Jin Parasuraman, Ramviyas Ye, Yinghui Hu, Rose Qingyang The School of Electrical and Computer Engineering University of Georgia AthensGA United States The School of Computing University of Georgia AthensGA United States Shanxi Key Laboratory of Information Communication Network and Security Xi’an University of Posts & Telecommunications China The Electrical and Computer Engineering Department Utah State University LoganUT United States

Urban vehicle-to-vehicle (V2V) link scheduling with shared spectrum is a challenging problem. Its main goal is to find the scheduling policy that can maximize system performance (usually the sum capacity of each link or their energy efficiency). Given that each link can experience interference from all other active links, the scheduling becomes a combinatorial integer programming problem and generally does not scale well with the number of V2V pairs. Moreover, link scheduling requires accurate channel state information (CSI), which is very difficult to estimate with good accuracy under high vehicle mobility. In this paper, we propose an end-to-end urban V2V link scheduling method called Map2Schedule, which can directly generate V2V scheduling policy from the city map and vehicle locations. Map2Schedule delivers comparable performance to the physical-model-based methods in urban settings while maintaining low computation complexity. This enhanced performance is achieved by machine learning (ML) technologies. Specifically, we first deploy the convolutional neural network (CNN) model to estimate the CSI from street layout and vehicle locations and then apply the graph embedding model for optimal scheduling policy. The results show that the proposed method can achieve high accuracy with much lower overhead and latency. © 2023, CC BY.

关键词： Channel state information

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Cross-Layer-Optimized Link Selection for Hologram Video Streaming over Millimeter Wave Networks

arXiv

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arXiv 2025年

作者： Jiang, Yiming Liu, Yanwei Liu, Jinxia Argyriou, Antonios Chen, Yifei Zhang, Wen State Key Laboratory of Cyberspace Security Defense Institute of Information Engineering Chinese Academy of Sciences Beijing China School of Cyber Security University of Chinese Academy of Sciences Beijing China Zhejiang Wanli University Ningbo China Department of Electrical and Computer Engineering University of Thessaly Greece

Holographic-type communication brings an immersive tele-holography experience by delivering holographic contents to users. As the direct representation of holographic contents, hologram videos are naturally three-dimensional representation, which consist of a huge volume of data. Advanced multi-connectivity (MC) millimeter-wave (mmWave) networks are now available to transmit hologram videos by providing the necessary bandwidth. However, the existing link selection schemes in MC-based mmWave networks neglect the source content characteristics of hologram videos and the coordination among the parameters of different protocol layers in each link, leading to sub-optimal streaming performance. To address this issue, we propose a cross-layer-optimized link selection scheme for hologram video streaming over mmWave networks. This scheme optimizes link selection by jointly adjusting the video coding bitrate, the modulation and channel coding schemes (MCS), and link power allocation to minimize the end-to-end hologram distortion while guaranteeing the synchronization and quality balance between real and imaginary components of the hologram. Results show that the proposed scheme can effectively improve the hologram video streaming performance in terms of PSNR by 1.2dB to 6.4dB against the non-cross-layer scheme. Copyright © 2025, The Authors. All rights reserved.

关键词： Holograms

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Evolution of 1/f Flux Noise in Superconducting Qubits with Weak Magnetic Fields

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Physical Review Letters 2023年第22期130卷 220602-220602页

作者： David A. Rower Lamia Ateshian Lauren H. Li Max Hays Dolev Bluvstein Leon Ding Bharath Kannan Aziza Almanakly Jochen Braumüller David K. Kim Alexander Melville Bethany M. Niedzielski Mollie E. Schwartz Jonilyn L. Yoder Terry P. Orlando Joel I-Jan Wang Simon Gustavsson Jeffrey A. Grover Kyle Serniak Riccardo Comin William D. Oliver Department of Physics Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Department of Physics Harvard University Cambridge Massachusetts 02139 USA MIT Lincoln Laboratory Lexington Massachusetts 02421 USA

The microscopic description of 1/f magnetic flux noise in superconducting circuits has remained an open question for several decades despite extensive experimental and theoretical investigation. Recent progress in superconducting devices for quantum information has highlighted the need to mitigate sources of qubit decoherence, driving a renewed interest in understanding the underlying noise mechanism(s). Though a consensus has emerged attributing flux noise to surface spins, their identity and interaction mechanisms remain unclear, prompting further study. Here, we apply weak in-plane magnetic fields to a capacitively shunted flux qubit (where the Zeeman splitting of surface spins lies below the device temperature) and study the flux-noise-limited qubit dephasing, revealing previously unexplored trends that may shed light on the dynamics behind the emergent 1/f noise. Notably, we observe an enhancement (suppression) of the spin-echo (Ramsey) pure-dephasing time in fields up to B=100 G. With direct noise spectroscopy, we further observe a transition from a 1/f to approximately Lorentzian frequency dependence below 10 Hz and a reduction of the noise above 1 MHz with increasing magnetic field. We suggest that these trends are qualitatively consistent with an increase of spin cluster sizes with magnetic field. These results should help to inform a complete microscopic theory of 1/f flux noise in superconducting circuits.

关键词： Fluctuations & noise Open quantum systems & decoherence SQUID Superconducting qubits

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Adaptive Envelope Detector-Based Phase Fault Detection Method for Power System Grid Distortions

Adaptive Envelope Detector-Based Phase Fault Detection Metho...

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International Black Sea Conference on Communications and Networking (BlackSeaCom)

作者： Ozgur Alaca Ali Riza Ekti Aaron Wilson Elizabeth Piersall Isabelle Snyder Serhan Yarkan Nils M Stenvig Electrification and Energy Infrastructures Division Oak Ridge National Laboratory Oak Ridge TN U.S.A. Department of Electrical and Computer Engineering Texas A&M University College Station TX U.S.A. Department of Electrical and Electronics Engineering Istanbul Ticaret University Istanbul Turkey

In this study, a phase fault detection algorithm is developed by employing the envelope detector method. The proposed method diagnoses faults among phases and defines fault areas in the incoming signal. The designed algorithm consists of three steps: analytical signal conversion, complex magnitude, and fault detection. Initially, an analytical signal is obtained from the incoming power signal to determine the instantaneous amplitude and phase of the signal. A complex magnitude operation is applied to analytical signals to display changes in amplitude. On the basis of the threshold values specified by the user, the last step identifies the distortion signal in terms of the type of error and size. The proposed method is tested with realistically simulated substation power signal data and real power system data from the Grid Event Signature Library. The obtained results revealed that the proposed method detects distortions accurately.

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Stochastic geometry based analysis for heterogeneous networks: a perspective on meta distribution

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Science China(Information Sciences) 2020年第12期63卷 230-250页

作者： Xinlei YU Qimei CUI Yuanjie WANG Na LI Xiaofeng TAO Mikko VALKAMA National Engineering Laboratory for Mobile Network Technologies Beijing University of Posts and Telecommunications National Computer Network Emergency Response Technical Team/Coordination Center of China (CNCERT/CC) Department of Electrical Engineering Tampere University

The meta distribution as a new performance metric can provide much more fine-grained information about the individual link reliability, and is of great value for the analysis and design of the future cellular networks. In this paper, we investigate the stochastic geometry based analysis for heterogeneous networks from the perspective on the meta distribution. The comprehensive overview for the fundamental framework of the meta distribution is provided, which involves the concepts of the meta distribution and its related performance metric(e.g., mean local delay and spatial outage capacity) and the efficient calculation methods of the meta distribution. The insights of the meta distribution are also stated by the comparison with standard success probability. The various applications of the meta distribution to heterogeneous networks are summarized and categorized by different types of technologies. Furthermore, some open issues and future work are discussed to promote the development and application of the meta distribution.

关键词： meta distribution stochastic geometry heterogeneous network success probability per-link reliability

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Guaranteed Conversion From Static Measurements Into Dynamic Ones Based on Manifold Feature Interpolation

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IEEE Transactions on Power Systems 2025年

作者： Mai, Lihao Li, Haoran Weng, Yang Blasch, Erik Zheng, Xiaodong Arizona State University Department of Electrical Computer and Energy Engineering TempeAZ85281 United States MOVEJ Analytics DaytonOH45324 United States Shanghai Jiao Tong University Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai200240 China

The increasing penetration of renewable energy sources, coupled with the variability of loads such as Electric Vehicles (EVs), is leading to stability issues in power systems. Addressing this problem requires dynamic measurements. However, there may be a limited number of High-Resolution (HR) meters, such as Phasor Measurement Units (PMUs), especially in distribution grids. In contrast, there are extensive Low-Resolution (LR) meters. With multi-resolution sources, our objective is to develop methodologies for interpolating data. Existing interpolation methods arise from different domains, e.g., optimization, signal analysis, Machine Learning, etc. However, they generally face the following challenges. Firstly, they lack a principled design for complex dynamics. Secondly, they often overlook essential physical aspects and inherent constraints of power systems. Finally, these methods typically neglect uncertainties. To overcome these challenges, we combine Autoencoders (AE) with curvature regularization to propose an optimal design of interpolation first. Then, we integrate physical laws into our analysis using physics-informed neural networks (PINN) and address uncertainties with stochastic physics-informed neural networks (SPINN). Our proposed method is extensively verified within both transmission and distribution grids. © 1969-2012 IEEE.

关键词： Phasor measurement units

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A Low-Profile Differential-Fed Microstrip Patch Antenna with Wide-Beamwidth and High-Gain under Dual-Band by Multi-Resonant Modes 13

A Low-Profile Differential-Fed Microstrip Patch Antenna with...

引用

13th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2021

作者： Liang, Yu-Dong Liu, Neng-Wu Zhu, Lei Fu, Guang Xidian University National Key Laboratory Of Antennas And Microwave Technology Xi'an China State Key Laboratory Of Millimeter Waves Southeast University Nanjing China University Of Macau Department Of Electrical And Computer Engineering China

ISBN: (纸本)9781665434379

A low-profile differential-fed microstrip patch antenna (MPA) with high-gain and wide-beamwidth under dual-band by multi-resonant modes is proposed in this paper. Firstly, the dielectric constant of the substrate is properly selected to achieve wide HPBW at TM10 mode. Then, the gain is improved via a linear slot on the patch on upper band at TM30 mode and two ring slots are etched around the coaxial inner to achieve impedance matching in dual bands. Finally, the simulated results reveal that the HPBW of the proposed MPA is increased to around 134 deg at lower band and the gain of 9.63 dBi is acquired at upper band simultaneously. Meanwhile, it keeps a low profile of around 0.0270. © 2021 IEEE.

关键词： Microstrip antennas

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