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A Cause of Momentary Level Shifts Appearing in Broadcast Satellite Signals 广播卫星信号中出现瞬时电平偏移的原因
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3135
R. Nishimura, B. Jeong, H. Susukita, Takashi Takahashi, K. Takizawa
{"title":"A Cause of Momentary Level Shifts Appearing in Broadcast Satellite Signals","authors":"R. Nishimura, B. Jeong, H. Susukita, Takashi Takahashi, K. Takizawa","doi":"10.1587/transcom.2022ebp3135","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3135","url":null,"abstract":"SUMMARY The degree of reception of BS signals is affected by various factors. After routinely recording it at two observation points at two locations, we found that momentary upward and downward level shifts occurred multiple times, mainly during daytime. These level shifts were observed at one location. No such signal was sensed at the other location. After producing an algorithm to extract such momemtary level shifts, their statistical properties were investigated. Careful analyses, including assessment of the signal polarity, amplitude, duration, hours, and comparison with actual flight schedules and route information implied that these level shifts are attributable to the interference of direct and reflected waves from aircraft flying at approximately tropopause altitude. This assumption is further validated through computer simulations of BS signal interference.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"1 1","pages":"714-722"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88191511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A SOM-CNN Algorithm for NLOS Signal Identification 一种用于NLOS信号识别的SOM-CNN算法
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3045
Zefu Gao, Hai Cheng Tao, Qin YU Zhu, Yi Wen Jiao, Dong Li, Feilong Mao, Chao Li, Y. Si, Yu Wang
{"title":"A SOM-CNN Algorithm for NLOS Signal Identification","authors":"Zefu Gao, Hai Cheng Tao, Qin YU Zhu, Yi Wen Jiao, Dong Li, Feilong Mao, Chao Li, Y. Si, Yu Wang","doi":"10.1587/transcom.2022ebp3045","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3045","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"6 1","pages":"117-132"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85311441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High Performance Network Virtualization Architecture on FPGA SmartNIC 基于FPGA SmartNIC的高性能网络虚拟化架构
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3122
Ke Wang, Yiwei Chang, Zhichuan Guo
{"title":"High Performance Network Virtualization Architecture on FPGA SmartNIC","authors":"Ke Wang, Yiwei Chang, Zhichuan Guo","doi":"10.1587/transcom.2022ebp3122","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3122","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"5 1","pages":"500-508"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82246936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Signal Detection for OTFS System Based on Improved Particle Swarm Optimization 基于改进粒子群算法的OTFS系统信号检测
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3140
Jurong Bai, Lin Lan, Zhaoyang Song, Huimin Du
{"title":"Signal Detection for OTFS System Based on Improved Particle Swarm Optimization","authors":"Jurong Bai, Lin Lan, Zhaoyang Song, Huimin Du","doi":"10.1587/transcom.2022ebp3140","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3140","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"44 1","pages":"614-621"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74099241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Development of a Simple and Lightweight Phantom for Evaluating Human Body Avoidance Technology in Microwave Wireless Power Transfer 微波无线能量传输中人体回避技术评估模型的研制
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3155
Kazuki Sato, K. Saito
{"title":"Development of a Simple and Lightweight Phantom for Evaluating Human Body Avoidance Technology in Microwave Wireless Power Transfer","authors":"Kazuki Sato, K. Saito","doi":"10.1587/transcom.2022ebp3155","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3155","url":null,"abstract":"SUMMARY In recent years, microwave wireless power transfer (WPT) has attracted considerable attention due to the increasing demand for various sensors and Internet of Things (IoT) applications. Microwave WPT requires technology that can detect and avoid human bodies in the transmission path. Using a phantom is essential for developing such technology in terms of standardization and human body protection from electromagnetic radiation. In this study, a simple and lightweight phantom was developed focusing on its radar cross-section (RCS) to evaluate human body avoidance technology for use in microwave WPT systems. The developed phantom’s RCS is comparable to that of the human body.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"81 1","pages":"645-651"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79699338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Handover Experiment of 60-GHz-Band Wireless LAN in over 200-km/h High-Speed Mobility Environment 60ghz波段无线局域网在200 km/h以上高速移动环境下的切换实验
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3078
T. Iwakuni, D. Uchida, Takuto Arai, Shuki Wai, N. Kita
{"title":"Handover Experiment of 60-GHz-Band Wireless LAN in over 200-km/h High-Speed Mobility Environment","authors":"T. Iwakuni, D. Uchida, Takuto Arai, Shuki Wai, N. Kita","doi":"10.1587/transcom.2022ebp3078","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3078","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"125 1","pages":"384-391"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78415688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Hybrid Routing Algorithm for V2V Communication in VANETs Based on Blocked Q-Learning 基于阻塞q -学习的VANETs V2V通信混合路由算法
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2021ebp3210
Xiang Bi, Huang Huang, Benhong Zhang, Xing Wei
{"title":"A Hybrid Routing Algorithm for V2V Communication in VANETs Based on Blocked Q-Learning","authors":"Xiang Bi, Huang Huang, Benhong Zhang, Xing Wei","doi":"10.1587/transcom.2021ebp3210","DOIUrl":"https://doi.org/10.1587/transcom.2021ebp3210","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"16 1","pages":"1-17"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90982470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Flow Processing Optimization with Accelerated Flow Actions on High Speed Programmable Data Plane 高速可编程数据平面上加速流动作的流处理优化
IF 0.7 4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2022ebp3069
Zhiyuan Ling, Xiao Chen, Lei Song
{"title":"Flow Processing Optimization with Accelerated Flow Actions on High Speed Programmable Data Plane","authors":"Zhiyuan Ling, Xiao Chen, Lei Song","doi":"10.1587/transcom.2022ebp3069","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3069","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"226 1","pages":"133-144"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83668656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quality and Transferred Data based Video Bitrate Control Method for Web-Conferencing 基于质量和传输数据的网络会议视频比特率控制方法
4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023ebp3079
Masahiro YOKOTA, Kazuhisa YAMAGISHI
{"title":"Quality and Transferred Data based Video Bitrate Control Method for Web-Conferencing","authors":"Masahiro YOKOTA, Kazuhisa YAMAGISHI","doi":"10.1587/transcom.2023ebp3079","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3079","url":null,"abstract":"In this paper, the quality and transferred data based video bitrate control method for web-conferencing services is proposed, aiming to reduce transferred data by suppressing excessive quality. In web-conferencing services, the video bitrate is generally controlled in accordance with the network conditions (e.g., jitter and packet loss rate) to improve users' quality. However, in such a control, the bitrate is excessively high when the network conditions is sufficiently high (e.g., high throughput and low jitter) , which causes an increased transferred data volume. The increased volume of data transferred leads to increased operational costs, such as network costs for service providers. To solve this problem, we developed a method to control the video bitrate of each user to achieve the required quality determined by the service provider. This method is implemented in an actual web-conferencing system and evaluated under various conditions. It was shown that the bitrate could be controlled in accordance with the required quality to reduce the transferred data volume.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136257178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
D2EcoSys: Decentralized Digital Twin EcoSystem Empower Co-Creation City-level Digital Twins D2EcoSys:去中心化数字孪生生态系统助力共创城市级数字孪生
4区 计算机科学
IEICE Transactions on Communications Pub Date : 2023-01-01 DOI: 10.1587/transcom.2023wwi0001
Kenji Kanai, Hidehiro Kanemitsu, Taku Yamazaki, Shintaro Mori, Aram Mine, Sumiko Miyata, Hironobu Imamura, Hidenori Nakazato
{"title":"D2EcoSys: Decentralized Digital Twin EcoSystem Empower Co-Creation City-level Digital Twins","authors":"Kenji Kanai, Hidehiro Kanemitsu, Taku Yamazaki, Shintaro Mori, Aram Mine, Sumiko Miyata, Hironobu Imamura, Hidenori Nakazato","doi":"10.1587/transcom.2023wwi0001","DOIUrl":"https://doi.org/10.1587/transcom.2023wwi0001","url":null,"abstract":"A city-level digital twin is a critical enabling technology to construct a smart city that helps improve citizens' living conditions and quality of life. Currently, research and development regarding the digital replica city are pursued worldwide. However, many research projects only focus on creating the 3D city model. A mechanism to involve key players, such as data providers, service providers, and application developers, is essential for constructing the digital replica city and producing various city applications. Based on this motivation, the authors of this paper are pursuing a research project, namely Decentralized Digital Twin EcoSystem (D2EcoSys), to create an ecosystem to advance (and self-grow) the digital replica city regarding time and space directions, city services, and values. This paper introduces an overview of the D2EcoSys project: vision, problem statement, and approach. In addition, the paper discusses the recent research results regarding networking technologies and demonstrates an early testbed built in the Kashiwa-no-ha smart city.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135158349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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