IEICE Communications Express最新文献_第9页

Practical Node Design for Wireless Multi-Hop Network Applications in Oyster Farming 牡蛎养殖中无线多跳网络的实用节点设计

IF 0.3

IEICE Communications Express Pub Date : 2026-01-20 DOI: 10.23919/comex.2025XBL0162

Kazuhiko Kinoshita;Kyohei Yamamoto;Alberto Gallegos Ramonet;Akinori Tsuji;Kensuke Iwamoto

引用次数: 0

Estimation of Effective Working Volume Within Ideal Reverberation Chamber Using Plane Wave Integration Method 用平面波积分法估算理想混响室内有效工作体积

IF 0.3

IEICE Communications Express Pub Date : 2026-01-20 DOI: 10.23919/comex.2025XBL0141

Katsushige Harima;Ifong Wu;Kaoru Gotoh

引用次数: 0

Comparative Evaluation of Black-Box Optimization Methods for RAN Function Placement Problem RAN函数布局问题黑盒优化方法的比较评价

IF 0.3

IEICE Communications Express Pub Date : 2025-12-15 DOI: 10.23919/comex.2025XBL0131

Shun Furusawa;Chihiro Dogo;Kazuhiro Saito;Yuya Seki;Shuta Kikuchi;Shu Tanaka

引用次数: 0

Diffusion Model-Based Network Packet Synthesis Using Inter-Packet Difference Learning 基于扩散模型的包间差分学习网络包合成

IF 0.3

IEICE Communications Express Pub Date : 2025-12-15 DOI: 10.23919/comex.2025XBL0132

Yukito Onodera;Erina Takeshita;Tomoya Kosugi;Takashi Nakanishi;Tatsuya Shimada

{"title":"Diffusion Model-Based Network Packet Synthesis Using Inter-Packet Difference Learning","authors":"Yukito Onodera;Erina Takeshita;Tomoya Kosugi;Takashi Nakanishi;Tatsuya Shimada","doi":"10.23919/comex.2025XBL0132","DOIUrl":"https://doi.org/10.23919/comex.2025XBL0132","url":null,"abstract":"In recent years, network analysis has increasingly used packet data analysis for machine learning. However, packet data accumulation has issues, including difficulties in data accumulation and insufficient diversity in attack patterns. To address these issues, researchers have increasingly turned to synthetic data generation methods as an alternative to data accumulation approaches for training machine learning models. However, conventional GAN-based synthetic data generation methods have limitations, particularly statistical characteristic inconsistencies due to training instability and lack of correlations both within packet fields and between consecutive packets. This paper proposes an approach that transforms packet data into structured image representations and generates differential image data using a conditional diffusion model on the basis of previous packet data. The proposed differential representation method excludes unchanged fields from learning and focuses specifically on the varying components that capture inter-packet relationships. Evaluation experiments conducted on the CICIDS 2017 dataset demonstrate the proposed approach improves over conventional methods in both statistical distribution similarity metrics and classification difficulty assessments.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 2","pages":"25-28"},"PeriodicalIF":0.3,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11301026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102952","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 Conjunction with IEICE General Conference 2025 与2025年IEICE大会相结合的特别集群

IF 0.3

IEICE Communications Express Pub Date : 2025-12-04 DOI: 10.23919/comex.2025COF0001

引用次数: 0

A Wideband Printed Inverted-F Antenna for MIMO Application 一种用于MIMO的宽带印刷反f天线

IF 0.3

IEICE Communications Express Pub Date : 2025-11-14 DOI: 10.23919/comex.2025XBL0113

Cho Thet Htar;Takafumi Fujimoto;Chai-Eu Guan

引用次数: 0

Adaptive Precoding Selection Between LP and THP for Enhanced System Capacity in MU-MIMO-Based LEO SATCOM Systems 基于mu - mimo的低轨卫星通信系统中LP和THP自适应预编码选择提高系统容量

IF 0.3

IEICE Communications Express Pub Date : 2025-11-14 DOI: 10.23919/comex.2025XBL0124

Shogo Kurimoto;Hirofumi Suganuma;Fumiaki Maehara

{"title":"Adaptive Precoding Selection Between LP and THP for Enhanced System Capacity in MU-MIMO-Based LEO SATCOM Systems","authors":"Shogo Kurimoto;Hirofumi Suganuma;Fumiaki Maehara","doi":"10.23919/comex.2025XBL0124","DOIUrl":"https://doi.org/10.23919/comex.2025XBL0124","url":null,"abstract":"In sixth-generation (6G) mobile communication systems, the development of non-terrestrial networks utilizing low Earth orbit (LEO) satellite communication (SATCOM) is expected to promote connectivity in diverse environments, including mountainous regions and maritime areas. To enhance the capacity of LEO SATCOM, the application of multiuser multiple-input multiple-output has recently garnered significant attention. Conventional studies have mainly evaluated linear precoding (LP) or Tomlinson-Harashima precoding (THP) separately, without exploring adaptive schemes that dynamically switch between them under a wide range of received carrier-to-noise ratio (CNR) conditions peculiar to SAT-COM. We propose a method to maximize system capacity by appropriately selecting between THP and LP based on the received CNR, evaluating its effectiveness through computer simulations. The proposed method was validated by comparing its system capacity performance with those of LP-only and THP-only schemes, demonstrating superior performance across varying CNR conditions.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 1","pages":"13-16"},"PeriodicalIF":0.3,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11249778","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847802","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 Miniaturized Shorted Radiator-Ground Monopole Antenna with High Gain End-Fire Radiation Pattern 一种具有高增益末端辐射方向图的小型化短路辐射地单极天线

IF 0.3

IEICE Communications Express Pub Date : 2025-11-14 DOI: 10.23919/comex.2025XBL0074

Mubarak S. Ellis;David Amoako;Elijah Atiigah;Derrick Dompreh;Christian Agyekum;George A. Prah;Kwame O. Gyasi;Kingsford S.O. Kwakye;Abdul R. Ahmed;Jerry J. Kponyo

{"title":"A Miniaturized Shorted Radiator-Ground Monopole Antenna with High Gain End-Fire Radiation Pattern","authors":"Mubarak S. Ellis;David Amoako;Elijah Atiigah;Derrick Dompreh;Christian Agyekum;George A. Prah;Kwame O. Gyasi;Kingsford S.O. Kwakye;Abdul R. Ahmed;Jerry J. Kponyo","doi":"10.23919/comex.2025XBL0074","DOIUrl":"https://doi.org/10.23919/comex.2025XBL0074","url":null,"abstract":"This research presents a design of a printed monopole antenna that is miniaturized with end-fire radiation, and has high gain. The antenna begins with a rectangular monopole antenna that is split into two sides using a narrow rectangular slot. The ground plane is then connected to one side of the split-radiator using a stub. By doing so, the omnidirectional radiation of the antenna changes to an end-fire radiation. Hence, a low gain unidirectional radiation is realized. The gain performance is enhanced by placing a parasitic conductor next to the other split radiator. The peak gain is more than doubled this way. Measurements show that the antenna has an S<inf>11</inf> < −10 dB bandwidth of 2.38 – 6.35 GHz (90.9%) and a good front - to - back ratio (F/B) > 10dB across this band. The antenna has a small physical size of 20×35 mm<sup>2</sup>, 0.04λ0<sup>2</sup> miniature area, 10 dBi peak gain, and stable main beam directions. It doesn't have reflective structures and ground plane extensions, making it compact and easily implemented.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 1","pages":"17-20"},"PeriodicalIF":0.3,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11249777","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847840","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

Reflection-Coefficient Extraction and Gain Enhancement of Reflectarrays Under Aperiodic Arrangement 非周期排列下反射射线的反射系数提取与增益增强

IF 0.3

IEICE Communications Express Pub Date : 2025-11-14 DOI: 10.23919/comex.2025XBL0122

Ke Peng;Qiang Chen

{"title":"Reflection-Coefficient Extraction and Gain Enhancement of Reflectarrays Under Aperiodic Arrangement","authors":"Ke Peng;Qiang Chen","doi":"10.23919/comex.2025XBL0122","DOIUrl":"https://doi.org/10.23919/comex.2025XBL0122","url":null,"abstract":"This letter addresses the performance degradation of reflectarrays (RAs) in practical operation due to aperiodic arrangement and mutual coupling between units, and proposes a reflection-coefficient extraction method based on the mean scattered electric field obtained from full-wave simulations. The method can accurately quantify the impact of an aperiodic environment on the amplitude and phase of the reflection coefficient at the scale of a single RA unit, while avoiding the modeling bias introduced by the conventional periodic-environment assumption. A 3×3 unit model is established to systematically analyze the influence of various environment-unit states on the reflection coefficient of the central unit. Furthermore, in a 20×20 1-bit RA design example, the proposed approach is integrated with a simulated-annealing algorithm to optimize the unit-size distribution, achieving a gain improvement of approximately 2 dB. The results demonstrate that the aperiodic arrangement effect is not only a potential source of performance degradation but can also be transformed into a usable design degree of freedom in optimization, thereby providing a new method and perspective for high-accuracy RA modeling and performance enhancement.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"15 1","pages":"9-12"},"PeriodicalIF":0.3,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11249782","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847819","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

Analysis of Performance on MQTT Over Wireless Transmission Link 无线传输链路上MQTT的性能分析

IF 0.3

IEICE Communications Express Pub Date : 2025-11-14 DOI: 10.23919/comex.2025COL0007

Ayumu Ito;Atsuko Yokotani;Koichi Ishibasi;Tetsuya Yokotani

引用次数: 0