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A Generalization of the Four Qubits Single Insertion Error-Correcting Code 四存根单插入纠错码的一般化
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0185
Taro Shibayama
{"title":"A Generalization of the Four Qubits Single Insertion Error-Correcting Code","authors":"Taro Shibayama","doi":"10.23919/comex.2023XBL0185","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0185","url":null,"abstract":"The first quantum insertion code is the four qubits code given by Hagiwara in 2021. Since then, several quantum insertion codes have been proposed, but they are all unrelated to Hagiwara's four qubits code. This article provides a new class of quantum single insertion codes that include the Hagiwara code. Furthermore, this construction gives a new decoder for insertion errors in the Hagiwara codes.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"126-129"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342677","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
Selectively Biased Optical Orthogonal Frequency Division Multiplexing for Visible Light Communication Systems 用于可见光通信系统的选择性偏置光正交频分复用技术
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0182
Menglong Wu;Yongchao Shi;Yongfa Xie;Jianwen Zhang;Tianao Yao
{"title":"Selectively Biased Optical Orthogonal Frequency Division Multiplexing for Visible Light Communication Systems","authors":"Menglong Wu;Yongchao Shi;Yongfa Xie;Jianwen Zhang;Tianao Yao","doi":"10.23919/comex.2023XBL0182","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0182","url":null,"abstract":"Traditional direct-current biased optical orthogonal frequency division multiplexing (DCO-OFDM) achieves unipolar signaling by adding a direct current (DC) bias and performing clipping. To suppress signal nonlinearity distortion caused by clipping, the DC bias needs to be set at a higher level, which results in low power efficiency of the DCO-OFDM. A scheme named Selectively Biased Optical OFDM (SBO-OFDM) was proposed in this letter. SBO-OFDM multiplies the OFDM signals with random phase sequences, selects the signal that requires the least amount of bias for transmission, and dynamically adds the bias based on signal variations to improve power efficiency. The experimental results demonstrate that the proposed SBO-OFDM exhibits a significant decrease in requirement of the normalized optical bit energy to noise power ratio \u0000<tex>$[E_{b(opt)}/N_{o}]$</tex>\u0000 compared to DCO-OFDM, ACO-OFDM, and PAM-DMT at a BER of 10\u0000<sup>−3</sup>\u0000. The results indicate that SBO-OFDM outperforms traditional optical OFDM (O-OFDM) in terms of power efficiency and have better BER performance than traditional DCO-OFDM.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"130-133"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342747","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 Outage Probability for Massive MIMO Systems Under Multi-Cell and Imperfect CSI Environments 多小区和不完美 CSI 环境下大规模 MIMO 系统的中断概率分析
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0175
Koki Miyamoto;Koji Nishibe;Takanori Shibakura;Kosuke Tamura;Jaesang Cha;Seongchul Cho;Chang-Jun Ahn
{"title":"Analysis of Outage Probability for Massive MIMO Systems Under Multi-Cell and Imperfect CSI Environments","authors":"Koki Miyamoto;Koji Nishibe;Takanori Shibakura;Kosuke Tamura;Jaesang Cha;Seongchul Cho;Chang-Jun Ahn","doi":"10.23919/comex.2023XBL0175","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0175","url":null,"abstract":"We analyze the outage probability for a massive multiple-input-multiple-output (MIMO) system employing maximum ratio transmission (MRT) under a multi-cell scenario. As cells become smaller, it will be even more necessary to analyze the outage probability considering interference from neighboring cells. Under a multi-cell environment, communication performance can be substantially compromised by channel estimation errors and inter-cell interference (ICI). We investigate the distribution of signal-to-interference and noise ratio (SINR) in a massive MIMO system and formulate a novel mathematical model for the outage probability. Simulation results show the validity of the derived mathematical model.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"114-117"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342748","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
Geometrically Shaped Four-Dimensional Modulation Formats for 5–7 Bits/Symbol Designed by Autoencoder 自动编码器为 5-7 比特/符号设计的几何形状四维调制格式
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0179
Akira Naka;Mamoru Komatsu
{"title":"Geometrically Shaped Four-Dimensional Modulation Formats for 5–7 Bits/Symbol Designed by Autoencoder","authors":"Akira Naka;Mamoru Komatsu","doi":"10.23919/comex.2023XBL0179","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0179","url":null,"abstract":"We design geometrically shaped four-dimensional (4D) modulation formats for 5–7 bits/4D symbol with an autoencoder, which is one of the deep learning applications, using pre-training with 4D formats based on 2-ary amplitude 8-ary phase-shift keying. The numerical evaluation shows that the obtained 4D modulation formats have 0.5-0.7dB signal-to-noise sensitivity gains in terms of normalized generalized mutual information (NGMI) as well as bit error ratio (BER) performances. Furthermore, we show the NGMI and BER performances of these 4D modulation formats are almost equivalent to those of probabilistic amplitude shaping with enumerative sphere shaping with a block length of 20.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"106-109"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342758","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
Reducing Web Page Load Time by Using a Dynamic Scheduling Method Based on Network Environment 使用基于网络环境的动态调度方法缩短网页加载时间
IF 0.3
IEICE Communications Express Pub Date : 2024-02-16 DOI: 10.23919/comex.2023XBL0176
Yudai Sasaki;Kenya Sato
{"title":"Reducing Web Page Load Time by Using a Dynamic Scheduling Method Based on Network Environment","authors":"Yudai Sasaki;Kenya Sato","doi":"10.23919/comex.2023XBL0176","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0176","url":null,"abstract":"In recent years, various information has been delivered through web pages using HTTP, making the acceleration of web page display a crucial concern. While HTTP/3 achieves the acceleration of web pages through prioritizing resources, there exists a challenge in establishing an optimal prioritization method. In this study, we addressed this issue by developing a novel approach that dynamically selects scheduling methods based on the network environment, comparing the performance of HTTP/3 prioritization methods across various network conditions. As a result, we demonstrated a reduction in page load times compared to conventional methods, particularly in network environments with low RTTs and low packet loss rates or high RTTs and high packet loss rates.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 4","pages":"122-125"},"PeriodicalIF":0.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10439034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342760","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 device identification method from BLE advertising packets with randomized MAC addresses based on regression of received signal strength 基于接收信号强度回归的随机 MAC 地址 BLE 广告数据包的设备识别方法
IF 0.3
IEICE Communications Express Pub Date : 2024-01-15 DOI: 10.23919/comex.2023XBL0157
Shuhei Akiyama;Yoshiaki Taniguchi
{"title":"A device identification method from BLE advertising packets with randomized MAC addresses based on regression of received signal strength","authors":"Shuhei Akiyama;Yoshiaki Taniguchi","doi":"10.23919/comex.2023XBL0157","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0157","url":null,"abstract":"In this letter, we propose a device identification method from observed Bluetooth Low Energy (BLE) advertising packets for tracking BLE devices even if their MAC addresses are changed periodically and randomly. In our proposed method, the combination of MAC addresses is formulated as a linear assignment problem. In addition, in a cost function of linear assignment, we combine two types of cost: time-based cost and received signal strength-based cost, which is calculated based on regression of received signal strength. Through experimental evaluations, we confirmed that the accuracy of our proposed method is the highest compared to traditional methods.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 3","pages":"64-67"},"PeriodicalIF":0.3,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10400563","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140042868","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
Streaming quality control based on object-detection accuracy 基于物体检测精度的流媒体质量控制
IF 0.3
IEICE Communications Express Pub Date : 2024-01-15 DOI: 10.23919/comex.2023XBL0158
Nobuaki Akutsu;Takuya Shindo;Takefumi Hiraguri;Hideaki Yoshino;Nobuhiko Itoh
{"title":"Streaming quality control based on object-detection accuracy","authors":"Nobuaki Akutsu;Takuya Shindo;Takefumi Hiraguri;Hideaki Yoshino;Nobuhiko Itoh","doi":"10.23919/comex.2023XBL0158","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0158","url":null,"abstract":"This study aims to establish an adaptive video quality control method that satisfies object-detection accuracy and reduces bandwidth consumption simultaneously for remote real-time video analysis systems. Existing video quality control methods determine video quality by considering human perceptual characteristics; this reduces bandwidth consumption while providing a high quality of experience. However, it cannot reduce bandwidth consumption in systems that use object-detection engines to detect people and vehicles. Thus, this study proposes a video quality control method to reduce bandwidth consumption. To this end, the bandwidth consumption and ratio of the number of frames satisfying the mean average precision requirements to the total number of frames (herein referred to as the success rate) are evaluated. The results confirm that the proposed method can reduce bandwidth consumption to 49% of that of the existing video quality control method at the same success rate.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 3","pages":"76-79"},"PeriodicalIF":0.3,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10400564","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140042888","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
Basic Study of Undersea Position Estimation System Using a Single Receiving Device 使用单一接收设备的海底位置估计系统基础研究
IF 0.3
IEICE Communications Express Pub Date : 2024-01-15 DOI: 10.23919/comex.2024SPL0005
Shinnosuke Sakaya;Masaharu Takahashi
{"title":"Basic Study of Undersea Position Estimation System Using a Single Receiving Device","authors":"Shinnosuke Sakaya;Masaharu Takahashi","doi":"10.23919/comex.2024SPL0005","DOIUrl":"https://doi.org/10.23919/comex.2024SPL0005","url":null,"abstract":"Water-related accidents are occurring all over the world. In Japan, approximately 1,200 water accidents occur every year. In marine activities, divers are exposed to various dangers such as floating objects and hypothermia. Therefore, an undersea position estimation system using kHz waves has been studied to support rescue operations by positioning divers in the sea. In this study, in order to facilitate the installation and retrieval of the undersea position estimation system, we investigated the position estimation of the undersea transmitting antenna using a single receiving device that combines three dipole antennas in electromagnetic field simulation. We confirmed that position estimation using the receiver proposed in this study was possible in some areas, and that the position estimation accuracy was affected by the distance from the receiver and the posture of the transmitting antenna.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 6","pages":"168-171"},"PeriodicalIF":0.3,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10400569","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141245124","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
Compensation capacitance tunings of wireless power transfer systems using artificial neural network 利用人工神经网络对无线电力传输系统进行补偿电容调整
IF 0.3
IEICE Communications Express Pub Date : 2024-01-15 DOI: 10.23919/comex.2023XBL0165
Kai Sato;Koutaro Hachiya;Toshiki Kanamoto;Atsushi Kurokawa
{"title":"Compensation capacitance tunings of wireless power transfer systems using artificial neural network","authors":"Kai Sato;Koutaro Hachiya;Toshiki Kanamoto;Atsushi Kurokawa","doi":"10.23919/comex.2023XBL0165","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0165","url":null,"abstract":"This letter proposes a new method for tuning compensation capacitances of wireless power transfer (WPT) systems using an artificial neural network (ANN). A field solver is used to analyze the compensation capacitances that maximize the output power at a set resonant frequency in a WPT system with ferrite shields. The compensation capacitances can be tuned using the ANN learned from the results acquired by the field solver. The electrical parameters for tuning the compensation capacitances acquired by the proposed method have maximum errors within 3.40% and mean absolute errors within 1.38%.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 3","pages":"88-92"},"PeriodicalIF":0.3,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10400566","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140042869","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 low-cost centralized network management method to reduce management workload instead of replacing software-defined networking-enabled network devices 一种低成本集中式网络管理方法，可减少管理工作量，而无需更换支持软件定义网络的网络设备
IF 0.3
IEICE Communications Express Pub Date : 2024-01-15 DOI: 10.23919/comex.2023XBL0163
Akihiro Imae;Yuto Iwasaki;Osanori Koyama;Kanami Ikeda;Makoto Yamada
{"title":"A low-cost centralized network management method to reduce management workload instead of replacing software-defined networking-enabled network devices","authors":"Akihiro Imae;Yuto Iwasaki;Osanori Koyama;Kanami Ikeda;Makoto Yamada","doi":"10.23919/comex.2023XBL0163","DOIUrl":"https://doi.org/10.23919/comex.2023XBL0163","url":null,"abstract":"We propose a network management method using a novel adapter that translates OpenFlow-based commands and vendor-specific commands using a single-board computer to achieve a low-cost centralized management of heterogeneous network devices including various vendors. The adapter is implemented in wired and wireless network devices and its operation is verified. Moreover, we compare the cost in two scenarios, i.e., the management of a smart home network and a small- and medium-sized enterprise network. The results show that the proposed method works efficiently and is low-cost than the conventional method.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 3","pages":"80-83"},"PeriodicalIF":0.3,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10400565","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140042936","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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