Electronics Letters最新文献_第7页

An Improved Fast Independent Vector Analysis Algorithm for Enhanced Efficiency 提高效率的一种改进的快速独立矢量分析算法

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-09 DOI: 10.1049/ell2.70246

Dahu Wang, Chang Liu

引用次数: 0

Secrecy Analysis and Optimization of UAV-Assisted Relaying Networks with Hardware Impairments 具有硬件缺陷的无人机辅助中继网络保密性分析与优化

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-07 DOI: 10.1049/ell2.70248

Songlin Cheng, Jielin Chen, Xiu Hu, Niansheng Chen, Guangyu Fan, Lei Rao, Xiaoyong Song, Dingyu Yang

引用次数: 0

Optimisation of FDA Beam Dwell Time in a Specific Direction with Time-Dependent Frequency Offset 优化FDA光束停留时间在特定方向与时间相关的频率偏移

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-07 DOI: 10.1049/ell2.70244

Yuanhao Zhang, Huijie Liu, Kairui Gao, Cheng Chen, Rujiang Guo

引用次数: 0

Loop-Unrolled SAR ADC With Complementary Voltage-to-Time Converters 带互补电压-时间转换器的环展开SAR ADC

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-05 DOI: 10.1049/ell2.70242

Da-Yeon Kim, Sang-Won Oh, Hyeon-Gi Hwang, Young-Seung Kim, Dong-Ryeol Oh

引用次数: 0

Near-Sensor 2D Pattern Classification System Based on 3D Memristor Array 基于三维忆阻阵列的近传感器二维模式分类系统

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-03 DOI: 10.1049/ell2.70192

Raqibul Hasan, Tarek M. Taha, Md Shahanur Alam

引用次数: 0

Point2Vertex: Human Mesh Reconstruction With Hybrid Position Encoding and Dual Refinement From Point Clouds Point2Vertex：基于混合位置编码和点云双重细化的人体网格重建

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-03 DOI: 10.1049/ell2.70243

Min Zhou, Ping An, Xinpeng Huang, Chao Yang

{"title":"Point2Vertex: Human Mesh Reconstruction With Hybrid Position Encoding and Dual Refinement From Point Clouds","authors":"Min Zhou, Ping An, Xinpeng Huang, Chao Yang","doi":"10.1049/ell2.70243","DOIUrl":"https://doi.org/10.1049/ell2.70243","url":null,"abstract":"Human mesh reconstruction from point clouds has gained increasing attention in recent years. However, existing reconstruction pipelines predominantly focus on regressing human model parameters, which results in an indirect mapping between input observations and output meshes. In this letter, we introduce a point-to-vertex reconstruction method, which bypasses parameter spaces to reconstruct complete SMPL topology from partial point observations directly. Specifically, our framework employs a hierarchical approach to extract geometric information from the partial point cloud. The feature mapping process is realized via a transformer-based architecture, which integrates parametric human model priors and employs hybrid position encoding. To further improve accuracy, the dual refinement module progressively refines the reconstruction process through sequential optimization in the coordinate and vertex-level feature spaces. Experiments on SURREAL datasets demonstrate that our framework achieves state-of-the-art performance, surpassing previous methods by 18.4% in MPVE (from 19.6 to 16.0 mm) and 10.2% in MPJPE (from 17.7 to 15.9 mm).","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70243","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Passively Cooled BiTe Thermoelectric Generator for Operation in Harsh Environments 用于恶劣环境的被动冷却BiTe热电发电机

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-02 DOI: 10.1049/ell2.70231

George Bernhardt, Luke Doucette, Ekaterina Khmeleva, Nuri Emanetoglu, Mauricio Pereira da Cunha

{"title":"Passively Cooled BiTe Thermoelectric Generator for Operation in Harsh Environments","authors":"George Bernhardt, Luke Doucette, Ekaterina Khmeleva, Nuri Emanetoglu, Mauricio Pereira da Cunha","doi":"10.1049/ell2.70231","DOIUrl":"https://doi.org/10.1049/ell2.70231","url":null,"abstract":"Energy harvesting from waste heat is becoming more prevalent as energy conservation efforts continue to increase worldwide. thermoelectric generators (TEGs) are devices that can harvest such waste heat and convert it into useful electrical power. Traditionally, active cooling methods are used to maximize the thermal gradient across a TEG module in order to optimize the energy conversion process. However, active cooling is impractical for a significant number of industrial harsh-environment applications. To examine the feasibility of using passively cooled TEG devices for producing useful electrical power, a bismuth telluride (BiTe) TEG device was fabricated and tested from 200°C to 290°C on the hot side, without active cooling on the cold side. As such, the temperature difference across the TEG device remained consistent at approximately 50°C over the range of hot-side temperatures tested. Under these conditions, the BiTe TEG device produced a single-couple average voltage of 8 mV over the range of test temperatures, and single-couple powers up to 0.10 mW at 290°C, despite the lack of active cooling. These results show the capability of TEG module integration to power electrical circuits for high-temperature harsh-environment applications operating under passive cooling.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70231","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intrinsic Modulation Response and Electrical Parasitics in Oxide-confined Vertical-Cavity Surface-Emitting Lasers Based on Single or Multiple Apertures 单孔或多孔氧化约束垂直腔面发射激光器的本征调制响应和电寄生特性

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-02 DOI: 10.1049/ell2.70234

Nikolay N. Ledentsov, Nikolay Ledentsov Jr., Łukasz Chorchos, Oleg Yu. Makarov, Vitaly A. Shchukin, Vladimir P. Kalosha, Ilya E. Titkov, Jaroslaw Turkiewicz

{"title":"Intrinsic Modulation Response and Electrical Parasitics in Oxide-confined Vertical-Cavity Surface-Emitting Lasers Based on Single or Multiple Apertures","authors":"Nikolay N. Ledentsov, Nikolay Ledentsov Jr., Łukasz Chorchos, Oleg Yu. Makarov, Vitaly A. Shchukin, Vladimir P. Kalosha, Ilya E. Titkov, Jaroslaw Turkiewicz","doi":"10.1049/ell2.70234","DOIUrl":"https://doi.org/10.1049/ell2.70234","url":null,"abstract":"Small aperture (∼2 µm) oxide-confined single-mode (SM) Vertical-Cavity Surface-Emitting Lasers (VCSELs) are capable of intrinsic optical modulation bandwidth above 42 GHz at low currents (∼2 mA). The measured optical bandwidth is limited to ∼36-38 GHz by the VCSEL resistance and capacitance (RC parasitics). To match requirements for industrial VCSELs, we applied a single mesa multi-aperture (MA) single-mode (SM) VCSEL design. The design is based on 4 diamond-shaped apertures at ∼10 µm pitch and an effective diameter of a single aperture of ∼1.7-2 µm. Higher capacitance of the large VCSEL mesa is compensated by a reduced resistance (50Ω) of the device, allowing optical bandwidth f-3dBo ∼32 GHz. The intrinsic optical bandwidth f-3dBo of ∼45 GHz is extracted. MA SM VCSEL allows narrow spectral width and error-free 50-Gbaud data transmission over 200 m OM5 multimode fibre (MMF).","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70234","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep-Learning-Based Pilot Optimization for Near-Field Channel Estimation in Ultra-Massive MIMO 基于深度学习的超大规模MIMO近场信道估计导频优化

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-04-01 DOI: 10.1049/ell2.70227

Zexian Chen, Kunpeng Song, Zhengwei Qu, Yunze Zhang, Yong Shang

引用次数: 0

Balancing Robustness and Efficiency in Embedded DNNs Through Activation Function Selection 基于激活函数选择的嵌入式深度神经网络鲁棒性与效率平衡

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2025-03-31 DOI: 10.1049/ell2.70210

Jon Gutiérrez-Zaballa, Koldo Basterretxea, Javier Echanobe

{"title":"Balancing Robustness and Efficiency in Embedded DNNs Through Activation Function Selection","authors":"Jon Gutiérrez-Zaballa, Koldo Basterretxea, Javier Echanobe","doi":"10.1049/ell2.70210","DOIUrl":"https://doi.org/10.1049/ell2.70210","url":null,"abstract":"Machine learning-based embedded systems for safety-critical applications, such as aerospace and autonomous driving, must be robust to perturbations caused by soft errors. As transistor geometries shrink and voltages decrease, modern electronic devices become more susceptible to background radiation, increasing the concern about failures produced by soft errors. The resilience of deep neural networks (DNNs) to these errors depends not only on target device technology but also on model structure and the numerical representation and arithmetic precision of their parameters. Compression techniques like pruning and quantisation, used to reduce memory footprint and computational complexity, alter both model structure and representation, affecting soft error robustness. In this regard, although often overlooked, the choice of activation functions (AFs) impacts not only accuracy and trainability but also compressibility and error resilience. This paper explores the use of bounded AFs to enhance robustness against parameter perturbations, while evaluating their effects on model accuracy, compressibility, and computational load with a technology-agnostic approach. We focus on encoder–decoder convolutional models developed for semantic segmentation of hyperspectral images with application to autonomous driving systems. Experiments are conducted on an AMD-Xilinx's KV260 SoM.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70210","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143741693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0