ETRI Journal最新文献_第5页

Efficient joint power allocation for mitigating intracluster interference in clustered NOMA system 有效联合功率分配减少集群NOMA系统的簇内干扰

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-09-06 DOI: 10.4218/etrij.2023-0445

Salifou Mounchili, Soumaya Hamouda

引用次数: 0

An innovative method for improving the performance of unmanned aerial vehicle-based generalized spatial modulation and non-orthogonal multiple access in 6G networks 一种改进6G网络中基于无人机的广义空间调制和非正交多址性能的创新方法

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-08-19 DOI: 10.4218/etrij.2024-0031

Mounika Neelam, Anuradha Sundru

{"title":"An innovative method for improving the performance of unmanned aerial vehicle-based generalized spatial modulation and non-orthogonal multiple access in 6G networks","authors":"Mounika Neelam, Anuradha Sundru","doi":"10.4218/etrij.2024-0031","DOIUrl":"https://doi.org/10.4218/etrij.2024-0031","url":null,"abstract":"The rapid evolution of wireless networks is leading to the emergence of 6G, promising unprecedented performance. We propose a nonorthogonal multiple access (NOMA)-based multiuser generalized spatial modulation (GSM) system that allows various transmitting antennas. Integrating unmanned aerial vehicles (UAVs) with NOMA and GSM enhances overall network performance. This paper proposes optimizing UAV-GSM-NOMA systems in 6G using the butterfly optimization algorithm (BOA) in the two-wave with diffuse power (TWDP) channel. Results are compared with those obtained from Nakagami and Rayleigh channels. Objectives include enhancing the sumrate, outage probability (OP), and energy efficiency (EE) in perfect and imperfect channel state information (CSI). Simulation results yield significant improvements in the TWDP channel compared with the Nakagami and Rayleigh channels. The OP is reduced, the sumrate is enhanced, and the EE is notably improved. These findings underscore the BOA's potential for 6G UAV-GSM-NOMA networks in challenging channel environments, ensuring reliable and efficient communication.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"47 3","pages":"492-504"},"PeriodicalIF":1.3,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2024-0031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel speaker verification approach featuring multidomain acoustics based on the weighted city block Minkowski distance 基于加权城市街区闵科夫斯基距离的多域声学新型扬声器验证方法

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-08-19 DOI: 10.4218/etrij.2023-0485

Khushboo Jha, Sumit Srivastava, Aruna Jain

{"title":"A novel speaker verification approach featuring multidomain acoustics based on the weighted city block Minkowski distance","authors":"Khushboo Jha, Sumit Srivastava, Aruna Jain","doi":"10.4218/etrij.2023-0485","DOIUrl":"https://doi.org/10.4218/etrij.2023-0485","url":null,"abstract":"Access control is vital in interconnected environments like the Internet of Things, Industry 4.0, and smart connectivity, ensuring authorized access for security. Biometric-based access, particularly speaker verification (SV), enhances security with unique vocal features, offering nonintrusive authentication with continuous monitoring. Single-domain features prove insufficient in distinguishing similar traits, prompting latest SV advancements to adopt multidomain-based speech features. This paradigm addresses the limitations of single-domain features by amalgamating the merits of individual domains, establishing a cutting-edge approach. It utilizes cepstral–frequency–time domain feature fusion, achieved via cepstral mean-variance normalization for generalizability. The weighted city block Minkowski distance is proposed to compare reference and test speech templates. Parameters are computed based on the confusion matrix, template matching distance functions, dynamic acoustic conditions, and additive white Gaussian noise. A deep convolutional neural network classifier is assessed on open-source LibriSpeech and Speaker in the Wild corpora, surpassing the current methodologies.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"47 2","pages":"227-243"},"PeriodicalIF":1.3,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0485","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143836357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analyzing ASEP with imperfect-phase error and various modulation schemes on IRS-aided wireless network over κ–μ fading channel 分析了在κ -μ衰落信道上irs辅助无线网络中存在不完全相位误差和各种调制方案的ASEP

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-08-19 DOI: 10.4218/etrij.2023-0383

Rajnish Kumar Ranjan, Atanu Chowdhury, Dibyendu Ghoshal

引用次数: 0

Low-resolution activity recognition using super-resolution and model ensemble networks 利用超分辨率和模型集合网络进行低分辨率活动识别

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-07-24 DOI: 10.4218/etrij.2023-0523

Tinglong Liu, Haiyan Wang

引用次数: 0

Channel estimation for reconfigurable intelligent surface-aided millimeter-wave massive multiple-input multiple-output system with deep residual attention network 利用深度残差注意网络进行可重构智能表面辅助毫米波大规模多输入多输出系统的信道估计

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-07-19 DOI: 10.4218/etrij.2023-0555

Xuhui Zheng, Ziyan Liu, Shitong Cheng, Yingyu Wu, Yunlei Chen, Qian Zhang

引用次数: 0

LSTM model to predict missing data of dissolved oxygen in land-based aquaculture farm 预测陆基水产养殖场溶解氧缺失数据的 LSTM 模型

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-07-19 DOI: 10.4218/etrij.2023-0337

Sang-Yeon Lee, Deuk-Young Jeong, Jinseo Choi, Seng-Kyoun Jo, Dae-Heon Park, Jun-Gyu Kim

引用次数: 0

Contact lens holographic projection display based on curved volume-holographic optical element 基于曲面体积全息光学元件的隐形眼镜全息投影显示屏

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-07-05 DOI: 10.4218/etrij.2023-0508

Jin Su Lee

{"title":"Contact lens holographic projection display based on curved volume-holographic optical element","authors":"Jin Su Lee","doi":"10.4218/etrij.2023-0508","DOIUrl":"10.4218/etrij.2023-0508","url":null,"abstract":"Wearable devices for augmented reality (AR) have gained considerable attention but research on contact lenses remains scarce. This study introduces an AR display that utilizes a contact lens integrated with a holographic projection display and a curved volume-holographic optical element. We designed a holographic projection display with a total FoV 15°(supported FoV 10°) and a 6.9 mm \u0000<math>\u0000 <mo>×</mo></math> 3.9 mm eyebox, respectively. The computer-generated hologram was optimized to null quality degradation caused by pupil constraints and asymmetric diffraction efficiency distribution. The diffraction efficiency of the holographic optical element used in the contact lens was calculated to provide insights into the anticipated optical performance and identify issues associated with the proposed system. Excellent performance with a maximum diffraction efficiency of 95% is demonstrated under Bragg conditions. However, a substantial drop in efficiency is observed at angular deviations 4°. Conversely, the wavelength deviations had a negligible impact on diffraction efficiency. Finally, the proposed contact lens holographic display was optically reconstructed, confirming its potential as a next-generation wearable display technology.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"47 3","pages":"518-526"},"PeriodicalIF":1.3,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0508","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141673190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D-structure coupled monopole designs with lower frequency resonance 具有低频共振的三维结构耦合单极设计

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-07-02 DOI: 10.4218/etrij.2023-0415

Enamul Khan, Md. Ataur Safi Rahaman Laskar, Khan Masood Parvez, SK. Moinul Haque

{"title":"3D-structure coupled monopole designs with lower frequency resonance","authors":"Enamul Khan, Md. Ataur Safi Rahaman Laskar, Khan Masood Parvez, SK. Moinul Haque","doi":"10.4218/etrij.2023-0415","DOIUrl":"10.4218/etrij.2023-0415","url":null,"abstract":"In this study, we investigated three-dimensional configurations involving a monopole-coupled wired ring, a hollow metallic cylinder, and wired helix spring to achieve resonance lower than quarter-wave resonance. The resonance frequency of a quarter-wave monopole, originally 2.05 GHz, was significantly lowered by 54.53% through effective coupling with a wired ring, and a quarter-wave monopole properly coupled with a hollow metallic cylinder experienced a large decrease of 64.34%. The primary incentive for connecting a wired ring to a hollow metallic cylinder is to significantly reduce resonance frequency. Efforts were also made to lower resonance frequency in a wired helix spring with a length close to that of the wired ring, resulting in a substantial 78.83% reduction in resonance frequency. The −10 dB bandwidth was 14.63% for the quarter-wave monopole, 27.21% for the monopole-coupled wired ring, 33.71% for the monopole-coupled hollow metallic cylinder, and 4.69% for the monopole-coupled helix spring. The ka values for the monopole-coupled wired ring, hollow metallic cylinder, and helix spring were 0.35, 0.27, and 0.16, respectively. Hence, these antennas can be classified as electrically small antennas. The achieved resonant frequencies have applications in various wireless communication scenarios. The experimental results from the fabricated prototype agree well with the simulation results.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"47 1","pages":"47-58"},"PeriodicalIF":1.3,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0415","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141687149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the interoperability of a Function-as-a-Service platform using an orchestration framework with a cloud-agnostic approach 使用云无关的协调框架提高功能即服务平台的互操作性

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-06-12 DOI: 10.4218/etrij.2023-0443

Zameer Ahmed Adhoni, Dayananda Lal Narayan

{"title":"Improving the interoperability of a Function-as-a-Service platform using an orchestration framework with a cloud-agnostic approach","authors":"Zameer Ahmed Adhoni, Dayananda Lal Narayan","doi":"10.4218/etrij.2023-0443","DOIUrl":"10.4218/etrij.2023-0443","url":null,"abstract":"Function-as-a-Service (FaaS) applications suffer from cold-start latency owing to their high execution time and memory usage. We propose a FaaS orchestration framework based on a cloud-agnostic approach for application and data interoperability. The framework's performance is evaluated on the web application of a student attendance system for online learning. The test system comprises 300 records from 50 students across five courses. Through optional file elimination, entry recognition, optional function generation, and function-level rewriting, the proposed orchestration framework suitably manages the storage of the student attendance records. The framework notably contributes to the student attendance web application by ensuring scalable, reliable, and efficient operations. Various evaluation measures confirm the effectiveness of the orchestration framework. These measures include cold/warm-start execution time, cold/warm-start memory usage, and zip execution time. An empirical analysis reveals that our framework reduces the execution time by 2 s –15 s and memory usage by 1MB–3 MB for the evaluated application.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"47 2","pages":"312-325"},"PeriodicalIF":1.3,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0443","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141351898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0