Localization techniques for unknown radio wave sources are crucial from the perspective of efficient utilization of frequency resources. The authors have studied methods for localizing a single wave source using unmanned aerial vehicles (UAVs) in non-line-of-sight (NLOS) environments based on maximum likelihood estimation. In this study, we propose a localization method for multiple wave sources by extending the singlewave source localization method. In the proposed method, the direction of arrivals (DoAs) at UAVs is modeled with a mixture of von-Mises distributions, and the wave sources are estimated by superimposing the DoA distributions estimated at the UAVs. The proposed method is validated with a simple simulation experiment with two wave sources.
从有效利用频率资源的角度来看，未知无线电波源的定位技术至关重要。作者们研究了在非视距（NLOS）环境下使用无人飞行器（UAV）基于最大似然估计对单个波源进行定位的方法。在本研究中，我们通过扩展单波源定位方法，提出了一种多波源定位方法。在所提出的方法中，无人机的到达方向（DoA）用冯-米塞斯分布的混合物建模，波源则通过叠加无人机上估计的 DoA 分布来估计。利用两个波源的简单模拟实验验证了所提出的方法。
{"title":"Multiple-Wave Source Localization Using UAVs in NLOS Environments","authors":"Shinichi Murata;Takahiro Matsuda;Takefumi Hiraguri","doi":"10.23919/comex.2024XBL0104","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0104","url":null,"abstract":"Localization techniques for unknown radio wave sources are crucial from the perspective of efficient utilization of frequency resources. The authors have studied methods for localizing a single wave source using unmanned aerial vehicles (UAVs) in non-line-of-sight (NLOS) environments based on maximum likelihood estimation. In this study, we propose a localization method for multiple wave sources by extending the singlewave source localization method. In the proposed method, the direction of arrivals (DoAs) at UAVs is modeled with a mixture of von-Mises distributions, and the wave sources are estimated by superimposing the DoA distributions estimated at the UAVs. The proposed method is validated with a simple simulation experiment with two wave sources.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 9","pages":"375-378"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591715","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142090748","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}
Pub Date : 2024-07-09DOI: 10.23919/comex.2024XBL0103
Tomoaki Matsuda;Shusuke Narieda
In our previous studies, we introduced a method for determining the optimal sensor placement of wireless sensor networks for monitoring indoor carbon dioxide (CO2) concentrations. This method, based on brute force, has proven to be accurate and reliable. However, the computational complexity increases exponentially with an increase in the number of sensors. Therefore, this study proposes a novel approach for optimal sensor node placement based on a genetic algorithm (GA) that offers a more efficient alternative to the brute force method. By utilizing the GA, we achieved optimal sensor placement with reduced computational complexity. To validate the effectiveness of our GA based method, we conducted numerical experiments using observed CO2 concentration. The results demonstrate that our proposed approach not only achieves optimal sensor placement but also maintains the accuracy of the observations.
在之前的研究中，我们介绍了一种确定无线传感器网络最佳传感器位置的方法，用于监测室内二氧化碳（CO2）浓度。事实证明，这种基于蛮力的方法准确可靠。然而，随着传感器数量的增加，计算复杂度也呈指数增长。因此，本研究提出了一种基于遗传算法（GA）的优化传感器节点布置的新方法，为蛮力法提供了更有效的替代方案。通过利用遗传算法，我们在降低计算复杂度的同时实现了传感器的最佳布置。为了验证基于 GA 的方法的有效性，我们使用观测到的二氧化碳浓度进行了数值实验。结果表明，我们提出的方法不仅实现了传感器的最佳布置，还保持了观测结果的准确性。
{"title":"Genetic Algorithm Optimization of Sensor Placement for CO2 Concentration Observation","authors":"Tomoaki Matsuda;Shusuke Narieda","doi":"10.23919/comex.2024XBL0103","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0103","url":null,"abstract":"In our previous studies, we introduced a method for determining the optimal sensor placement of wireless sensor networks for monitoring indoor carbon dioxide (CO2) concentrations. This method, based on brute force, has proven to be accurate and reliable. However, the computational complexity increases exponentially with an increase in the number of sensors. Therefore, this study proposes a novel approach for optimal sensor node placement based on a genetic algorithm (GA) that offers a more efficient alternative to the brute force method. By utilizing the GA, we achieved optimal sensor placement with reduced computational complexity. To validate the effectiveness of our GA based method, we conducted numerical experiments using observed CO2 concentration. The results demonstrate that our proposed approach not only achieves optimal sensor placement but also maintains the accuracy of the observations.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 9","pages":"393-396"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591722","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091032","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}
We aim to realize a beyond 5th generation (B5G) smart mobile fronthaul (SMFH) that utilizes analog radio over fiber (A-RoF) transmission technology and optical power feed technology by applying newly developed Hollow-Core Fiber. In this paper, to evaluate the feasibility of the SMFH, we will report the successful construction of a A-RoF testbed using an unlicensed WiFi 5 GHz band signal provided by a Linux PC-based access point instead of a licensed 5G sub 6 GHz band signal.
{"title":"Construction of the Analog Radio Over Fiber Technology Testbed with Linux PC-Based WiFi Access Points","authors":"Kojiro Nishimura;Satoru Okamoto;Ryuta Murakami;Naoaki Yamanaka;Motoharu Matsuura","doi":"10.23919/comex.2024COL0011","DOIUrl":"https://doi.org/10.23919/comex.2024COL0011","url":null,"abstract":"We aim to realize a beyond 5th generation (B5G) smart mobile fronthaul (SMFH) that utilizes analog radio over fiber (A-RoF) transmission technology and optical power feed technology by applying newly developed Hollow-Core Fiber. In this paper, to evaluate the feasibility of the SMFH, we will report the successful construction of a A-RoF testbed using an unlicensed WiFi 5 GHz band signal provided by a Linux PC-based access point instead of a licensed 5G sub 6 GHz band signal.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 12","pages":"458-460"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591712","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761392","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}
Pub Date : 2024-07-09DOI: 10.23919/comex.2024COL0010
Haruto Ando;Aohan Li;Maki Arai;Mikio Hasegawa
Channel Bonding is a technique used to aggregate multiple wireless communication channels in order to enhance data transfer speeds. Initially introduced in IEEE 802.11n, it has been adapted to the newer IEEE 802.11ax standard, and so on. While this technology enables faster communications, it also suffers from interference issues due to increased bandwidth utilization. Previous studies have extensively focused on bandwidth selection to minimize channel interference, often requiring significant time. This paper proposes an approach that utilizes the Laser chaos decision maker to rapidly determine the optimal channel for dynamic channel bonding. We design our algorithm based on the scalable laser chaos decision maker and evaluate its performance through computer simulations. The results demonstrate that the proposed method has the capability to make more accurate selections than other algorithms.
{"title":"Primary Channel Selection in Dynamic Channel Bonding Using Laser Chaos Decision Maker","authors":"Haruto Ando;Aohan Li;Maki Arai;Mikio Hasegawa","doi":"10.23919/comex.2024COL0010","DOIUrl":"https://doi.org/10.23919/comex.2024COL0010","url":null,"abstract":"Channel Bonding is a technique used to aggregate multiple wireless communication channels in order to enhance data transfer speeds. Initially introduced in IEEE 802.11n, it has been adapted to the newer IEEE 802.11ax standard, and so on. While this technology enables faster communications, it also suffers from interference issues due to increased bandwidth utilization. Previous studies have extensively focused on bandwidth selection to minimize channel interference, often requiring significant time. This paper proposes an approach that utilizes the Laser chaos decision maker to rapidly determine the optimal channel for dynamic channel bonding. We design our algorithm based on the scalable laser chaos decision maker and evaluate its performance through computer simulations. The results demonstrate that the proposed method has the capability to make more accurate selections than other algorithms.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 12","pages":"454-457"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591714","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761425","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}
Pub Date : 2024-07-09DOI: 10.23919/comex.2024XBL0102
Yuichiro Sugiyama;Kentaro Kobayashi
As an alternative to GPS, we focus on indoor positioning using Wi-Fi RTT (Round Trip Time), which measures the round trip time to a Wi-Fi access point. Wi-Fi RTT-based positioning has not been well studied for indoor drones. As an experimental study of indoor drone positioning using Wi-Fi RTT, this paper presents a positioning method using a combination of on-board altimeter and Wi-Fi RTT ranging, and experimental results of drone positioning when stationary and hovering to clarify the positioning accuracy in both 2.4 GHz and 5 GHz bands. This paper shows that in both frequency bands, the positioning accuracy is significantly degraded during hovering compared to stationary, and that there is no significant difference between 2.4GHz and 5 GHz bands.
{"title":"Experimental Study on Indoor Drone Positioning Using Wi-Fi RTT","authors":"Yuichiro Sugiyama;Kentaro Kobayashi","doi":"10.23919/comex.2024XBL0102","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0102","url":null,"abstract":"As an alternative to GPS, we focus on indoor positioning using Wi-Fi RTT (Round Trip Time), which measures the round trip time to a Wi-Fi access point. Wi-Fi RTT-based positioning has not been well studied for indoor drones. As an experimental study of indoor drone positioning using Wi-Fi RTT, this paper presents a positioning method using a combination of on-board altimeter and Wi-Fi RTT ranging, and experimental results of drone positioning when stationary and hovering to clarify the positioning accuracy in both 2.4 GHz and 5 GHz bands. This paper shows that in both frequency bands, the positioning accuracy is significantly degraded during hovering compared to stationary, and that there is no significant difference between 2.4GHz and 5 GHz bands.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 9","pages":"371-374"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591713","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091060","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}
To analyze the radio wave propagation characteristics, we observed the wavefront as an image using 3-dimensional imaging technology that separates the arrival times of the radio waves. In this paper, by imaging the wavefront, we can observe the radio wave propagation characteristics at each frequency.
{"title":"Visualization Technology for Radio Wave Propagation Characteristics in Sub-Terahertz Band","authors":"Hikaru Tsuchida;Kazuaki Ishioka;Michiya Hayama;Shusaku Umeda;Akinori Taira","doi":"10.23919/comex.2024XBL0088","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0088","url":null,"abstract":"To analyze the radio wave propagation characteristics, we observed the wavefront as an image using 3-dimensional imaging technology that separates the arrival times of the radio waves. In this paper, by imaging the wavefront, we can observe the radio wave propagation characteristics at each frequency.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 9","pages":"363-366"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591711","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091034","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}
Pub Date : 2024-07-09DOI: 10.23919/comex.2024XBL0064
Shin-Ichi Yamamoto;Hiroto Ado;Ryuya Seki
When reflector antennas with a beam waveguide feeding system are used in an array configuration, the transmission phase of each reflector antenna must be known and corrected. In this paper, we propose a method in which a reflector plate is placed in the center hole of the main reflector, the reflected phase at the primary radiator horn is measured, and half of the measured phase is used as the transmission phase of the beam waveguide feeding system. The proposed method was verified by calculation, measurement using a simple model with the same path length, and measurement using an actual reflector antenna, and its effectiveness was confirmed.
{"title":"Phase Measurement and Adjustment of Reflector Antenna with Beam Waveguide Feeds","authors":"Shin-Ichi Yamamoto;Hiroto Ado;Ryuya Seki","doi":"10.23919/comex.2024XBL0064","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0064","url":null,"abstract":"When reflector antennas with a beam waveguide feeding system are used in an array configuration, the transmission phase of each reflector antenna must be known and corrected. In this paper, we propose a method in which a reflector plate is placed in the center hole of the main reflector, the reflected phase at the primary radiator horn is measured, and half of the measured phase is used as the transmission phase of the beam waveguide feeding system. The proposed method was verified by calculation, measurement using a simple model with the same path length, and measurement using an actual reflector antenna, and its effectiveness was confirmed.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 9","pages":"367-370"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591716","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091033","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}
Pub Date : 2024-07-09DOI: 10.23919/comex.2024XBL0098
Kai Ikuta;Yuta Ito;Moriya Nakamura
We investigated a nonlinear equalizer based on reservoir computing (RC) with tapped-delay lines for compensating for linear and nonlinear waveform distortion caused by, e.g., chromatic dispersion and self-phase modulation. We evaluated and compared the equalization performance of RC systems with and without tapped-delay lines by numerical simulation, while varying the parameters and the transmission distance. The proposed equalizer construction enables the use of RC with a shorter time-constant than that used for conventional RC-based nonlinear equalizers.
{"title":"Optical Nonlinearity Mitigation Using Reservoir Computing with Tapped-Delay Lines","authors":"Kai Ikuta;Yuta Ito;Moriya Nakamura","doi":"10.23919/comex.2024XBL0098","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0098","url":null,"abstract":"We investigated a nonlinear equalizer based on reservoir computing (RC) with tapped-delay lines for compensating for linear and nonlinear waveform distortion caused by, e.g., chromatic dispersion and self-phase modulation. We evaluated and compared the equalization performance of RC systems with and without tapped-delay lines by numerical simulation, while varying the parameters and the transmission distance. The proposed equalizer construction enables the use of RC with a shorter time-constant than that used for conventional RC-based nonlinear equalizers.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 9","pages":"384-388"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591710","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091061","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}
Pub Date : 2024-07-09DOI: 10.23919/comex.2024COL0006
Akito Ohshima;Kohei Murata;Kosuke Sanada;Hiroyuki Hatano;Kazuo Mori
In vehicle platooning, one of the typical applications of Vehicle-to-Vehicle (V2V) communications using C-V2X (Cellular Vehicle-to-Everything), the vehicles need to exchange information such as the velocity and position of a vehicle leading the platoon to achieve safe platoon driving. Relay transmission using sidelink communications, specified by the C-V2X standard, is considered as a potential approach for information exchange in vehicle platooning. The autonomous resource management scheme, SB-SPS (Sensing Based Semi Persistent Scheduling), has been standardized for sidelink communications. However, half duplex problem, one of major problems in the SB-SPS, is not sufficiently resolved for the relay transmission in vehicle platooning. This work proposes an enhanced SB-SPS scheme to mitigate half duplex problem and improve the transmission performance for the relay transmission in vehicle platooning. The performance evaluation through computer simulation demonstrates the effectiveness of the proposed scheme.
{"title":"Enhanced SB-SPS Scheme to Mitigate Half Duplex Problem for C-V2X Relay Transmission in Vehicle Platooning","authors":"Akito Ohshima;Kohei Murata;Kosuke Sanada;Hiroyuki Hatano;Kazuo Mori","doi":"10.23919/comex.2024COL0006","DOIUrl":"https://doi.org/10.23919/comex.2024COL0006","url":null,"abstract":"In vehicle platooning, one of the typical applications of Vehicle-to-Vehicle (V2V) communications using C-V2X (Cellular Vehicle-to-Everything), the vehicles need to exchange information such as the velocity and position of a vehicle leading the platoon to achieve safe platoon driving. Relay transmission using sidelink communications, specified by the C-V2X standard, is considered as a potential approach for information exchange in vehicle platooning. The autonomous resource management scheme, SB-SPS (Sensing Based Semi Persistent Scheduling), has been standardized for sidelink communications. However, half duplex problem, one of major problems in the SB-SPS, is not sufficiently resolved for the relay transmission in vehicle platooning. This work proposes an enhanced SB-SPS scheme to mitigate half duplex problem and improve the transmission performance for the relay transmission in vehicle platooning. The performance evaluation through computer simulation demonstrates the effectiveness of the proposed scheme.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 12","pages":"461-465"},"PeriodicalIF":0.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10591718","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761477","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}
As machine learning research in the networking field has become more active in recent years, the demand for network traffic datasets has increased. On the other hand, the amount and types of publicly available network traffic datasets are scarce as training datasets for machine learning. Therefore, we focus on the generative adversarial network (GAN) as a data generation model, aiming to use generated rather than publicly available training datasets. However, existing GANs have difficulty generating sufficiently diverse network traffic to improve generalization ability while representing variations across weekdays, weekends, and date. This study proposes a new layers inserted into the conditional GAN model with the functions of expanding dimensionality of time-series traffic data and embedding temporal position information. Experimental results show that the model with the proposed layers inserted generated diverse network traffic data that represents temporal features.
近年来，网络领域的机器学习研究日趋活跃，对网络流量数据集的需求也随之增加。另一方面，作为机器学习的训练数据集，公开可用的网络流量数据集的数量和类型都很少。因此，我们将生成式对抗网络（GAN）作为数据生成模型，旨在使用生成的而非公开可用的训练数据集。然而，现有的生成式对抗网络难以生成足够多样化的网络流量，从而在代表工作日、周末和日期变化的同时提高泛化能力。本研究提出在条件 GAN 模型中插入一个新层，其功能是扩展时间序列流量数据的维度并嵌入时间位置信息。实验结果表明，插入了所建议的层的模型生成了代表时间特征的多样化网络流量数据。
{"title":"Proposal of Temporal Feature Layers for Network Traffic Dataset Generation Using C-GAN","authors":"Yukito Onodera;Erina Takeshita;Tomoya Kosugi;Satoshi Suzuki","doi":"10.23919/comex.2024XBL0062","DOIUrl":"https://doi.org/10.23919/comex.2024XBL0062","url":null,"abstract":"As machine learning research in the networking field has become more active in recent years, the demand for network traffic datasets has increased. On the other hand, the amount and types of publicly available network traffic datasets are scarce as training datasets for machine learning. Therefore, we focus on the generative adversarial network (GAN) as a data generation model, aiming to use generated rather than publicly available training datasets. However, existing GANs have difficulty generating sufficiently diverse network traffic to improve generalization ability while representing variations across weekdays, weekends, and date. This study proposes a new layers inserted into the conditional GAN model with the functions of expanding dimensionality of time-series traffic data and embedding temporal position information. Experimental results show that the model with the proposed layers inserted generated diverse network traffic data that represents temporal features.","PeriodicalId":54101,"journal":{"name":"IEICE Communications Express","volume":"13 8","pages":"319-322"},"PeriodicalIF":0.3,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10554803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141973490","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}
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