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Preamble Detection Method for RSS Data Synchronization in WLAN Monitoring 用于无线局域网监测 RSS 数据同步的前导码检测方法
IF 0.3
IEICE Communications Express Pub Date : 2024-09-10 DOI: 10.23919/comex.2024XBL0134
Morihiko Tamai;Akio Hasegawa;Hiroyuki Yokoyama
{"title":"Preamble Detection Method for RSS Data Synchronization in WLAN Monitoring","authors":"Morihiko Tamai;Akio Hasegawa;Hiroyuki Yokoyama","doi":"10.23919/comex.2024XBL0134","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0134","url":null,"abstract":"Received signal strength (RSS) data is one of the useful data types for understanding wireless link quality. To perform WLAN monitoring over a wide area of the target environment, it is necessary to use multiple sensor nodes to observe RSS data at various positions. In this situation, achieving synchronization among sensor nodes is challenging. In this paper, we propose a synchronization method for different sets of RSS data. In our method, by analyzing In-phase and Quadrature (IQ) samples, the preamble, which is part of a wireless frame, is detected, and the reception start timing of each preamble is used as a synchronization timing point. Through experiments in an actual indoor environment, we confirmed that our method can achieve the synchronization accuracy of less than 1 µs between different sets of RSS data.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 11","pages":"435-439"},"PeriodicalIF":0.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10675420","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Factor Graph-Based Technique for Trajectory Tracking of Target with High Mobility 基于因子图的高移动性目标轨迹跟踪技术
IF 0.3
IEICE Communications Express Pub Date : 2024-09-10 DOI: 10.23919/comex.2024XBL0132
Lei Jiang;Nopphon Keerativoranan;Tad Matsumoto;Jun-ichi Takada
{"title":"Factor Graph-Based Technique for Trajectory Tracking of Target with High Mobility","authors":"Lei Jiang;Nopphon Keerativoranan;Tad Matsumoto;Jun-ichi Takada","doi":"10.23919/comex.2024XBL0132","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0132","url":null,"abstract":"This paper presents a trajectory tracking algorithm for high-mobility targets using an extended Kalman smoothing (EKS)-based factor graph (FG). Traditional tracking methods often face challenges in maintaining accuracy and computational efficiency when dealing with fast-moving objects. Leveraging the probabilistic framework of factor graphs and robust estimation of EKS, the algorithm enhances tracking precision for fast-moving objects. Extensive simulations across various motion models demonstrate improved accuracy and robustness. The results indicate that this method effectively addresses the limitations of conventional tracking algorithms, providing a promising solution for applications in aviation, autonomous vehicles, and other domains requiring high-mobility tracking.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 11","pages":"431-434"},"PeriodicalIF":0.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10675312","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
“Black Magic 5G Sidelink”: Transparently Extending Short-Range Black-Box Wearable Sensors to a Wide Area via 5G Sidelink "黑魔法 5G Sidelink"：通过 5G Sidelink 将短距离黑盒子可穿戴传感器透明地扩展到广阔区域
IF 0.3
IEICE Communications Express Pub Date : 2024-09-10 DOI: 10.23919/comex.2024XBL0143
Makoto Nomura;Akihiro Nakao
{"title":"“Black Magic 5G Sidelink”: Transparently Extending Short-Range Black-Box Wearable Sensors to a Wide Area via 5G Sidelink","authors":"Makoto Nomura;Akihiro Nakao","doi":"10.23919/comex.2024XBL0143","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0143","url":null,"abstract":"Human motion capture has various use cases such as digital twinning. Most wearable sensing devices to capture data employ short-range wireless protocols such as serial communications over Bluetooth Low Energy (BLE) to satisfy the requirement of low power consumption. On the other hand, the short-range wireless communications limit the applications of human motion capture since digital twinning is often considered more useful in a wide area, e.g., capturing motions of sports players in a large stadium, etc. However, the problem is that replacing BLE with 5G for the existing sensors is not favorable for developers due to the additional cost of re-designing the system, not to mention that it is infeasible for end-users as the sensor protocol is proprietary. In order to overcome this challenge, we propose “black-magic 5G Sidelink” to extend the range of the existing human motion capture sensing system with serial communications via BLE, “transparently” tunneling the black-box sensor protocols over 5G. Our contributions are threefold. First, we propose a viable architecture of transparent extension of any existing BLE serial sensor systems to a wide area. Second, we actually implement the proposed system. Third, our evaluation reveals that the captured data from many people can be efficiently acquired with a low latency of about 40 msec over a wide area, and thus shows the feasibility of transparently extending short-range black-box wearable sensors to a wide area via 5G Sidelink by our proposal.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 11","pages":"444-448"},"PeriodicalIF":0.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10675418","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Versatile Two-Mode ODFT-Based Labeling in Mode-Multiplexed Optical Packet Switching 模式多路复用光分组交换中基于 ODFT 的多功能双模标签技术
IF 0.3
IEICE Communications Express Pub Date : 2024-09-10 DOI: 10.23919/comex.2024XBL0133
Takahiro Kodama;Gabriella Cincotti
{"title":"Versatile Two-Mode ODFT-Based Labeling in Mode-Multiplexed Optical Packet Switching","authors":"Takahiro Kodama;Gabriella Cincotti","doi":"10.23919/comex.2024XBL0133","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0133","url":null,"abstract":"A single-mode labeling approach is proposed for a mode-multiplexed OPS system, and the corresponding detection performances are evaluated as a function of the received power. We introduce the mode dimension to increase the number of labels that can be generated and processed by a single multiport E/D, and we analyze configurations with reduced intra-mode crosstalk. We show that the label error rate is significantly influenced by inter-mode crosstalk, being TE10 labels more susceptible to crosstalk from adjacent ports, than TE00 labels.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 11","pages":"440-443"},"PeriodicalIF":0.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10675417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Measurement Method Using Packets for Measuring the Processing Time of Edge and Cloud Applications 使用数据包测量边缘和云应用程序处理时间的测量方法
IF 0.3
IEICE Communications Express Pub Date : 2024-09-10 DOI: 10.23919/comex.2024XBL0129
Che Huang;Hirotaka Ujikawa;Tomoya Hatano;Tatsuya Shimada;Tomoaki Yoshida
{"title":"A Measurement Method Using Packets for Measuring the Processing Time of Edge and Cloud Applications","authors":"Che Huang;Hirotaka Ujikawa;Tomoya Hatano;Tatsuya Shimada;Tomoaki Yoshida","doi":"10.23919/comex.2024XBL0129","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0129","url":null,"abstract":"In use cases of IoT remote control, IoT applications such as image processing can be placed in the edge or cloud computing to reduce the cost of IoT devices. Additionally, end-to-end (E2E) communication quality including network quality and edge computing processing time is very important for IoT remote control. However, current measurement tools cannot measure the E2E quality directly when edge processing is involved. Therefore, the network quality and the processing time of edge applications need to be separately measured. Measuring the processing time of these applications requires not only modifications for each application in conventional methods but also complicated configuration work. Therefore, we propose a method to measure the processing time of edge applications by detecting packets embedded with unique identifiers, without requiring any configurations to applications. The implementation and evaluation results show that our method can accurately measure the processing time required on edge application.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 11","pages":"426-430"},"PeriodicalIF":0.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10675421","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Circularly Polarized Cavity-Backed Antenna with Variable Magneto-Electric Crossed-Dipole Structure 具有可变磁电交叉偶极子结构的圆极化腔背天线
IF 0.3
IEICE Communications Express Pub Date : 2024-09-10 DOI: 10.23919/comex.2024XBL0119
Phanuphong Boontamchauy;Makoto Sano;Ryuji Kuse;Takeshi Fukusako
{"title":"Circularly Polarized Cavity-Backed Antenna with Variable Magneto-Electric Crossed-Dipole Structure","authors":"Phanuphong Boontamchauy;Makoto Sano;Ryuji Kuse;Takeshi Fukusako","doi":"10.23919/comex.2024XBL0119","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0119","url":null,"abstract":"The authors propose a mode conversion technique in a cavity-backed circularly polarized magneto-electric (ME) antenna in order to achieve a wide axial ratio (AR) beamwidth covering a wide frequency range. The proposed technique allows both the ME antenna element and the cavity structural parameters to be independent of each other, which would otherwise always be associated with each other. The proposed antenna demonstrated impedance bandwidth \u0000<tex>$(vert S_{11}vert leq-10text{dB})$</tex>\u0000 of 38.73% (1.52-2.25 GHz), 3-dB axial ratio bandwidth of 33.05% (1.49-2.08 GHz), and 3-dB AR beamwidth exceeding 214° in a single plane ( \u0000<tex>$xz$</tex>\u0000 or \u0000<tex>$yztext{-plane}$</tex>\u0000 ) across the operating band.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 11","pages":"421-425"},"PeriodicalIF":0.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10675422","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Special Cluster in Emerging Communication Technologies in Conjunction with Main Topics of ICETC 2023 结合 2023 年国际电子通信会议主要议题的新兴通信技术专题组
IF 0.3
IEICE Communications Express Pub Date : 2024-08-12 DOI: 10.23919/comex.2024TCF0001
{"title":"Special Cluster in Emerging Communication Technologies in Conjunction with Main Topics of ICETC 2023","authors":"","doi":"10.23919/comex.2024TCF0001","DOIUrl":"https://doi.org/10.23919/comex.2024TCF0001","url":null,"abstract":"This special cluster is primarily intended as a collection of extended research papers originally presented at the International Conference on Emerging Technologies for Communications (ICETC) 2023. The ICETC was inaugurated in 2020 and has since become the flagship conference of the IEICE Communications Society (IEICE-CS). The conference encompasses all research areas of the IEICE-CS and is designed to facilitate the generation of synergies between researchers from different technical fields. The fourth ICETC was held in Sapporo, Japan, in 2023, with a 100% face-to-face format and over 200 participants.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 8","pages":"289-289"},"PeriodicalIF":0.3,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10634098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Simple Wavelet Transform with Fine Time and Frequency Sampling 具有精细时间和频率采样功能的简单小波变换
IF 0.3
IEICE Communications Express Pub Date : 2024-08-09 DOI: 10.23919/comex.2024XBL0117
Tomoya Yamaoka;Tadashi Oshima
{"title":"A Simple Wavelet Transform with Fine Time and Frequency Sampling","authors":"Tomoya Yamaoka;Tadashi Oshima","doi":"10.23919/comex.2024XBL0117","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0117","url":null,"abstract":"Wavelet transform performs frequency transform with different time window widths to enable accurate time-frequency analysis for sensing. Time and frequency sampling of scalogram are not uniform to eliminate redundancy. One method achieves fine time sampling with fewer operations, but the frequency direction sampling is not uniform or fine, and sidelobes are high. To address these problems, this study proposes a simple wavelet transform with fine time and frequency sampling. The proposed method consists of phase multiplication and signal addition. Frequency transform of any time window width is possible by changing the additive width of the signal. Furthermore, by adding the results, wavelet transform using a triangular window that lowers sidelobes is realized using a small number of complex multiplication operations. When the proposed method is applied to a chirp waveform, the frequency transition of the signal could be finely confirmed.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 10","pages":"397-400"},"PeriodicalIF":0.3,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10633230","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142377145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinearity Tolerance of Time-Domain Single Carrier Index Modulation Signals in Optical Access Links 光接入链路中时域单载波索引调制信号的非线性容限
IF 0.3
IEICE Communications Express Pub Date : 2024-08-09 DOI: 10.23919/comex.2024XBL0121
Daichi Aoki;Wataru Imajuku
{"title":"Nonlinearity Tolerance of Time-Domain Single Carrier Index Modulation Signals in Optical Access Links","authors":"Daichi Aoki;Wataru Imajuku","doi":"10.23919/comex.2024XBL0121","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0121","url":null,"abstract":"This paper investigates the impact of nonlinear optical effects on Time-Domain Single Carrier Index Modulation (TDSC-IM) optical signals in Wavelength Division Multiplexing-Passive Optical Network (WDM-PON) systems that use standard single-mode fibers. Simulations indicate that TDSC-IM optical signals with high peak-to-average power ratio (PAPR) can maintain sufficient signal-to-noise ratios (SNRs) in C-band transmission in optical delivery networks with standard single mode fibers, while O-band transmission suffers larger nonlinear effects. This paper demonstrates that the degradation in the SNRs of the 25 GBaud quaternary phase shift keying (QPSK) based TDSC-IM optical signals can be less than 1 dB for 8 wavelength channel WDM-PON systems with 50 GHz spacing.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 10","pages":"405-408"},"PeriodicalIF":0.3,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10633222","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142376627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Power Saving Control Method with Adaptive FEC Decoder in Optical Access Network 光接入网中的自适应 FEC 解码器节电控制方法
IF 0.3
IEICE Communications Express Pub Date : 2024-08-09 DOI: 10.23919/comex.2024XBL0124
Kaito Kubo;Amila Kariyawasam;Shunji Kimura
{"title":"Power Saving Control Method with Adaptive FEC Decoder in Optical Access Network","authors":"Kaito Kubo;Amila Kariyawasam;Shunji Kimura","doi":"10.23919/comex.2024XBL0124","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0124","url":null,"abstract":"With the increasing demand for network services, the power consumption of equipment has been steadily rising each year, especially in the access network domain. Passive Optical Networks (PON) traditionally operate on the principle of ensuring service provision to the farthest user. Consequently, performance tends to be excessive for short to medium distances, leading to surplus power consumption. In this study, we address the issue of reducing power consumption in access networks by tackling surplus power. Our approach involves utilizing three different types of Reed-Solomon (RS) decoders to apply appropriate forward error correction (FEC) redundancy based on transmission distance, aiming to lower power consumption of RS decoders in optical network units (ONUs). Subsequently, we evaluated the power saving of FEC decoding in a 10G-class PON and report over 48% average power saving compared to the conventional homogeneous FEC-based network.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 10","pages":"401-404"},"PeriodicalIF":0.3,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10633221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142377147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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