IEICE Communications Express最新文献

Indoor Localization System Based on Weighted Centroid Enhanced by Radio Location Fingerprint and its Android Application 无线定位指纹增强加权质心的室内定位系统及其Android应用

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IEICE Communications Express Pub Date : 2026-10-01 Epub Date: 2026-08-12 DOI: 10.23919/comex.2026XBL0091

Masato Sawase;Tatsuki Yanagawa;Kazuki Komatsu;Hideyuki Uehara

引用次数: 0

RIS-Assisted Integrated Sensing, Communication and Energy Harvesting ris辅助集成传感、通信和能量收集

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IEICE Communications Express Pub Date : 2026-10-01 Epub Date: 2026-08-12 DOI: 10.23919/comex.2026XBL0095

Yongjie Li;Jing Shen;Jizhao Lu;Chang Liang;Jinglong Zhao;Xiangchuan Gao

引用次数: 0

Individual Identification Method for Electronic Devices Using Differences in Spectrum Emissions Caused by Manufacturing and Assembly Variations 利用制造和装配差异引起的光谱发射差异的电子设备个体识别方法

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IEICE Communications Express Pub Date : 2026-10-01 Epub Date: 2026-08-12 DOI: 10.23919/comex.2026XBL0124

Koki Abe;Shugo Kaji;Daisuke Fujimoto;Masahiro Kinugawa;Laurent Sauvage;Jean-Luc Danger;Yuichi Hayashi

{"title":"Individual Identification Method for Electronic Devices Using Differences in Spectrum Emissions Caused by Manufacturing and Assembly Variations","authors":"Koki Abe;Shugo Kaji;Daisuke Fujimoto;Masahiro Kinugawa;Laurent Sauvage;Jean-Luc Danger;Yuichi Hayashi","doi":"10.23919/comex.2026XBL0124","DOIUrl":"https://doi.org/10.23919/comex.2026XBL0124","url":null,"abstract":"The proliferation of counterfeit electronic parts, including integrated circuits (ICs) and other components, threatens system functionality and can lead to critical failures. This paper presents a device identification method based on spectral emission differences as a fundamental step toward board-level authenticity assurance. The proposed method actively extracts device-to-device differences originating in semiconductor manufacturing and observes them together with additional variations introduced by components, interconnects, and printed circuit boards (PCBs). Specifically, a marker signal in the MHz band is generated inside the IC. As this signal propagates through and radiates from the PCB, the characteristics of the source, path, and antenna are superimposed on the observed spectrum. The peak amplitudes of the fundamental and harmonic components are then used as identification features. An evaluation using six commercial microcontrollers showed that all devices were correctly identified by averaging three measurements, and that the maximum misidentification rate was limited to 5.6% even for a single measurement.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 10","pages":"404-408"},"PeriodicalIF":0.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11653580","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072281","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

Perception-Aware Risk-Constrained Replication and Roaming for Reliable Wireless TSN Flows in Mobile Robotics 移动机器人中可靠无线TSN流的感知感知风险约束复制和漫游

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IEICE Communications Express Pub Date : 2026-10-01 Epub Date: 2026-08-12 DOI: 10.23919/comex.2026XBL0100

Kun Feng;Xin Qiu;Rui Guo

引用次数: 0

ISRS-Supported 86.5-Tbps L+U-Band Transmission Over 70.4-km Field-Deployed DSF with PPLN-Based Wavelength-Band Converters isrs支持86.5 tbps L+ u波段传输超过70.4公里现场部署的DSF与基于ppln的波长波段转换器

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IEICE Communications Express Pub Date : 2026-09-01 Epub Date: 2026-06-02 DOI: 10.23919/comex.2026XBL0027

Kosuke Kimura;Shimpei Shimizu;Megumi Hoshi;Akira Kawai;Masashi Abe;Takushi Kazama;Koji Enbutsu;Takahiro Kashiwazaki;Asuka Inoue;Shunya Konno;Kana Sumihara;Masanori Nakamura;Fukutaro Hamaoka;Takeshi Umeki;Takayuki Kobayashi;Yutaka Miyamoto;Tomoyuki Kato;Yu Tanaka;Takeshi Hoshida

{"title":"ISRS-Supported 86.5-Tbps L+U-Band Transmission Over 70.4-km Field-Deployed DSF with PPLN-Based Wavelength-Band Converters","authors":"Kosuke Kimura;Shimpei Shimizu;Megumi Hoshi;Akira Kawai;Masashi Abe;Takushi Kazama;Koji Enbutsu;Takahiro Kashiwazaki;Asuka Inoue;Shunya Konno;Kana Sumihara;Masanori Nakamura;Fukutaro Hamaoka;Takeshi Umeki;Takayuki Kobayashi;Yutaka Miyamoto;Tomoyuki Kato;Yu Tanaka;Takeshi Hoshida","doi":"10.23919/comex.2026XBL0027","DOIUrl":"https://doi.org/10.23919/comex.2026XBL0027","url":null,"abstract":"We demonstrate 86.5-Tbps (801.5 Gbps × 108 channels) wavelength division multiplexing (WDM) transmission using the L- and U-bands over a 10.8-THz bandwidth across 70.4 km of field-deployed dispersion-shifted fiber (DSF). The key enabling technology is the wavelength-band conversion using periodically poled lithium niobate (PPLN) waveguides, which extends the usable bandwidth into the U-band where higher-chromatic dispersion reduces Kerr nonlinear impairments. Although U-band operation faces increased fiber loss, which is slightly exacerbated by bending, mechanical stress, and splicing in the field environment, these penalties are mitigated by the inter-channel stimulated Raman scattering (ISRS) gain derived from co-propagating L-band channels. The experimental results confirm the feasibility of bandwidth extension to the U-band and high-data-rate transmission over legacy DSF infrastructure.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 9","pages":"384-388"},"PeriodicalIF":0.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11548526","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148862067","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

Joint Magnitude and Phase Segmented Digital Predistortion for Doherty Power Amplifiers Doherty功率放大器的联合幅相分割数字预失真

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IEICE Communications Express Pub Date : 2026-09-01 Epub Date: 2026-07-14 DOI: 10.23919/comex.2026XBL0070

Fei Yang;Yu Ye;Yanan Luo;Ruiyang Liu;Gang Yang

{"title":"Joint Magnitude and Phase Segmented Digital Predistortion for Doherty Power Amplifiers","authors":"Fei Yang;Yu Ye;Yanan Luo;Ruiyang Liu;Gang Yang","doi":"10.23919/comex.2026XBL0070","DOIUrl":"https://doi.org/10.23919/comex.2026XBL0070","url":null,"abstract":"Doherty power amplifiers (DPAs) are widely utilized in modern communication systems for their high efficiency, but they exhibit severe nonlinearities and memory effects when driven into saturation. Among various linearization techniques, digital predistortion (DPD) has become the mainstream solution to compensate for these impairments. However, traditional Generalized Memory Polynomial (GMP) models struggle to achieve high modeling accuracy for such highly nonlinear DPAs. To address this limitation, this paper proposes a novel DPD method based on joint magnitude and phase segmentation. By partitioning the complex signal plane into a polar grid, the proposed approach achieves a more precise fitting of the DPA's strong nonlinear behaviors and memory effects. Moreover, a high-throughput hardware actuator tailored for the proposed method is designed based on a multi-branch Look-Up Table architecture and deployed on a Xilinx Zynq UltraScale+ MPSoC platform. Measurements on a 50W DPA driven by a 20 MHz OFDM signal show that the method reduces the Normalized Mean Square Error to −35.07 dB and the Adjacent Channel Power Ratio to −46.16 dBc (lower) and −44.56 dBc (upper), outperforming the conventional GMP baseline.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 9","pages":"358-361"},"PeriodicalIF":0.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11610644","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148862114","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

SDM/WDM Line-of-Sight Optical Wireless Communication Using Narrow FOV Photodiode Receivers 采用窄视场光电二极管接收器的SDM/WDM视距无线光通信

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IEICE Communications Express Pub Date : 2026-09-01 Epub Date: 2026-07-14 DOI: 10.23919/comex.2026XBL0102

Wataru Chujo;Kentaro Kobayashi

引用次数: 0

Novel Identification Method of Effective Conductivity of CFRP in Wide Frequency Band Including GHz Range 含GHz宽频段CFRP有效电导率识别新方法

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IEICE Communications Express Pub Date : 2026-09-01 Epub Date: 2026-07-14 DOI: 10.23919/comex.2026XBL0083

Shun Igarashi;Suguru Yamagishi;Ichiro Kuwayama;Kengo Iokibe;Yoshitaka Toyota

{"title":"Novel Identification Method of Effective Conductivity of CFRP in Wide Frequency Band Including GHz Range","authors":"Shun Igarashi;Suguru Yamagishi;Ichiro Kuwayama;Kengo Iokibe;Yoshitaka Toyota","doi":"10.23919/comex.2026XBL0083","DOIUrl":"https://doi.org/10.23919/comex.2026XBL0083","url":null,"abstract":"Although the use of carbon fiber reinforced plastic (CFRP) in automotive components has been expanding, its electrical properties in high-frequency band have not been fully investigated. In this letter, we constructed a microstrip structure using CFRP plate to examine electrical properties of the CFRP and identified its effective conductivity over a wide frequency range, including the GHz band. One advantage of this method is that the direction of the current along CFRP sample in the measurement system is the same as the direction of the return path of the common-mode current flowing through automotive components that adopt CFRP. In the letter, we first measured transmission characteristics of a microstrip structure with a CFRP plate as the signal line. By comparing the transmission loss with full-wave simulation, we were able to identify the effective conductivity of the CFRP is approximately 10,000 S/m. Furthermore, we confirmed that applying CFRP as the return plane did not affect common-mode noise compared to the conventional metal planes.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 9","pages":"366-369"},"PeriodicalIF":0.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11610666","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148862078","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

Validity Limits of the SLAA for Nakagami-$n$ Fading Channel Capacity Nakagami-$n$衰落信道容量的SLAA有效性限制

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IEICE Communications Express Pub Date : 2026-09-01 Epub Date: 2026-07-14 DOI: 10.23919/comex.2026XBL0045

Md Sohidul Islam;Yosuke Sugiura;Tetsuya Shimamura

{"title":"Validity Limits of the SLAA for Nakagami-$n$ Fading Channel Capacity","authors":"Md Sohidul Islam;Yosuke Sugiura;Tetsuya Shimamura","doi":"10.23919/comex.2026XBL0045","DOIUrl":"https://doi.org/10.23919/comex.2026XBL0045","url":null,"abstract":"The Nakagami-<tex>$n$</tex> (Rician) fading model is essential for characterizing line-of-sight (LOS) wireless channels in 5G and 6G networks. While the Nakagami-<tex>$n$</tex> model underpins LOS channel modeling in next-generation networks, the complexity of the modified Bessel function often necessitates the use of the Small Limit Argument Approximation (SLAA). However, the validity domain of this approximation has not been rigorously defined. This study quantifies the SLAA's accuracy limits, specifically examining the interplay between fading severity <tex>$(K)$</tex>, SNR <tex>$(rho)$</tex>, and diversity order <tex>$(m)$</tex>. Our analysis reveals that the SLAA maintains structural fidelity (Root Mean Square Error (RMSE) <tex>$< 10^{-3})$</tex> only under near-Rayleigh conditions <tex>$(K < 0.04)$</tex>. Furthermore, we observe that approximation error exhibits a linear dependence on <tex>$m$</tex>, despite a marginal reduction at higher SNRs. Consequently, the SLAA is unsuitable for strong Rician <tex>$(Kgeq 1)$</tex> or high-diversity systems, limiting its utility primarily to asymptotic analyses in weak LOS channels. These findings establish critical design guidelines for the safe application of SLAA in next-generation wireless system analysis.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 9","pages":"375-378"},"PeriodicalIF":0.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11610642","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148862083","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

On-Device Learning and Decoding Using Tsetlin Machines: A Hamming(7, 4) Case Study 设备上学习和解码使用Tsetlin机器：一个汉明（7,4）的案例研究

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IEICE Communications Express Pub Date : 2026-09-01 Epub Date: 2026-07-14 DOI: 10.23919/comex.2026XBL0068

Quang-Thang Duong

引用次数: 0