Pub Date : 2023-01-01DOI: 10.1587/transcom.2022ebp3184
A. Koyama, Y. Tanigawa, H. Tode
{"title":"Transmission Timing Control among Both Aperiodic and Periodic Flows for Reliable Transfer by Restricted Packet Loss and within Permissible Delay in Wireless Sensor Networks","authors":"A. Koyama, Y. Tanigawa, H. Tode","doi":"10.1587/transcom.2022ebp3184","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3184","url":null,"abstract":"","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2022obp0004
T. Tanimura, R. Hirai, N. Kikuchi
{"title":"Physical status representation in multiple administrative optical networks by federated unsupervised learning","authors":"T. Tanimura, R. Hirai, N. Kikuchi","doi":"10.1587/transcom.2022obp0004","DOIUrl":"https://doi.org/10.1587/transcom.2022obp0004","url":null,"abstract":"","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2022obp0005
T. Kato, H. Muranaka, Yu Tanaka, Y. Akiyama, T. Hoshida, Shimpei Shimizu, Takayuki Kobayashi, T. Kazama, T. Umeki, Kei Watanabe, Yutaka Miyamoto
SUMMARY Multi-band WDM transmission beyond the C+L-band is a promisingtechnologyforachievinglargercapacitytransmissionbyalimitednumberofinstalledfibers.InadditiontotheC-andL-band,wecanexpecttousetheS-bandasthenextband.Althoughthedevelopmentofoptical componentsfornewbands,particularlytransceivers,entailsresourcedis-persion,whichisoneofthebarrierstotherealizationofmulti-bandsystems, wavelengthconversionbytransparentall-opticalsignalprocessingenables new wavelength band transmission using existing components. Therefore, we proposed a transmission system including a new wavelength band such as the S-band and made it possible to use a transceiver for the existing band by performing the whole-band wavelength conversion without using a transceiver for the new band. As a preliminary verification to demonstrate multi-band WDM transmission including S-band, we investigated the application of a novel wavelength converter between C-band and S-band, which consists of periodically poled lithium niobate waveguide, to the proposed system. We first characterized the conversion efficiency and noise figure of the wavelength converter and estimated the transmission performance of the system through the wavelength converter. Using the evaluated wavelength converters and test signals of 64 channels arranged in the C-band at 75-GHz intervals, we constructed an experimental setup for S-band transmission through an 80-km standard single-mode fiber. We then demonstrated error-free transmission of real-time 400-Gb/s DP-16QAM signals after forward error correction decoding. From the experimental results, it was clarified thatthewavelengthconverterwhichrealizestheuniformlosslessconversioncoveringthewholeC-bandeffectivelyachievestheS-bandWDMtransmis-sion,anditwasverifiedthatthecapacityimprovementofthemulti-band WDMsystemincludingtheS-bandcanbeexpectedbyapplyingitincom-binationwiththeC+L-bandWDMsystem.
{"title":"S-Band WDM Transmission Using PPLN-Based Wavelength Converters and 400-Gb/s C-Band Real-Time Transceivers","authors":"T. Kato, H. Muranaka, Yu Tanaka, Y. Akiyama, T. Hoshida, Shimpei Shimizu, Takayuki Kobayashi, T. Kazama, T. Umeki, Kei Watanabe, Yutaka Miyamoto","doi":"10.1587/transcom.2022obp0005","DOIUrl":"https://doi.org/10.1587/transcom.2022obp0005","url":null,"abstract":"SUMMARY Multi-band WDM transmission beyond the C+L-band is a promisingtechnologyforachievinglargercapacitytransmissionbyalimitednumberofinstalledfibers.InadditiontotheC-andL-band,wecanexpecttousetheS-bandasthenextband.Althoughthedevelopmentofoptical componentsfornewbands,particularlytransceivers,entailsresourcedis-persion,whichisoneofthebarrierstotherealizationofmulti-bandsystems, wavelengthconversionbytransparentall-opticalsignalprocessingenables new wavelength band transmission using existing components. Therefore, we proposed a transmission system including a new wavelength band such as the S-band and made it possible to use a transceiver for the existing band by performing the whole-band wavelength conversion without using a transceiver for the new band. As a preliminary verification to demonstrate multi-band WDM transmission including S-band, we investigated the application of a novel wavelength converter between C-band and S-band, which consists of periodically poled lithium niobate waveguide, to the proposed system. We first characterized the conversion efficiency and noise figure of the wavelength converter and estimated the transmission performance of the system through the wavelength converter. Using the evaluated wavelength converters and test signals of 64 channels arranged in the C-band at 75-GHz intervals, we constructed an experimental setup for S-band transmission through an 80-km standard single-mode fiber. We then demonstrated error-free transmission of real-time 400-Gb/s DP-16QAM signals after forward error correction decoding. From the experimental results, it was clarified thatthewavelengthconverterwhichrealizestheuniformlosslessconversioncoveringthewholeC-bandeffectivelyachievestheS-bandWDMtransmis-sion,anditwasverifiedthatthecapacityimprovementofthemulti-band WDMsystemincludingtheS-bandcanbeexpectedbyapplyingitincom-binationwiththeC+L-bandWDMsystem.","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2023ebp3044
Weisen Luo, Xiuqin Wei, H. Sekiya
{"title":"Analysis and Design of Class-Φ22 Wireless Power Transfer System","authors":"Weisen Luo, Xiuqin Wei, H. Sekiya","doi":"10.1587/transcom.2023ebp3044","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3044","url":null,"abstract":"","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2023ebp3045
Shinichi Murata, T. Matsuda
SUMMARY To localize an unknown wave source in non-line-of-sight environments, awavesourcelocalizationschemeusingmultipleunmanned-aerial-vehicles (UAVs) is proposed. In this scheme, each UAV estimates the direction-of-arrivals (DoAs) of received signals and the wave source is localized from the estimated DoAs by means of maximum likelihood estimation. In this study, by extending the concept of this scheme, we propose a novel wave source localization scheme using a single UAV. In the proposed scheme, the UAV moves on the path comprising multiple measurementpointsandthewavesourceissequentiallylocalizedfromDoAdistributionsestimatedatthesemeasurementpoints.Ateachmeasurement point,witha moving path planning algorithm , the UAV determines the next measurement point from the estimated DoA distributions and measurement points that the UAV has already visited. We consider two moving path planning algorithms, and validate the proposed scheme through simulation experiments.
{"title":"Single UAV-Based Wave Source Localization in NLOS Environments","authors":"Shinichi Murata, T. Matsuda","doi":"10.1587/transcom.2023ebp3045","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3045","url":null,"abstract":"SUMMARY To localize an unknown wave source in non-line-of-sight environments, awavesourcelocalizationschemeusingmultipleunmanned-aerial-vehicles (UAVs) is proposed. In this scheme, each UAV estimates the direction-of-arrivals (DoAs) of received signals and the wave source is localized from the estimated DoAs by means of maximum likelihood estimation. In this study, by extending the concept of this scheme, we propose a novel wave source localization scheme using a single UAV. In the proposed scheme, the UAV moves on the path comprising multiple measurementpointsandthewavesourceissequentiallylocalizedfromDoAdistributionsestimatedatthesemeasurementpoints.Ateachmeasurement point,witha moving path planning algorithm , the UAV determines the next measurement point from the estimated DoA distributions and measurement points that the UAV has already visited. We consider two moving path planning algorithms, and validate the proposed scheme through simulation experiments.","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2023ebp3046
Akio Kawabata, Bijoy Chand Chatterjee, E. Oki
SUMMARY When mission-critical applications are provided over a network, high availability is required in addition to a low delay. This paper proposes a multi-homing network design model, named MHND, that achieves low delay, high availability, and the order guarantee of events. MHND maintains the event occurrence order with a multi-homing config-uration using conservative synchronization. We formulate MHND as an integer linear programming problem to minimize the delay. We prove that the distributed server allocation problem with MHND is NP-complete. Nu-mericalresultsindicatethat,asamulti-homingnumber,whichisthenumber of servers to which each user belongs, increases, the availability increases while increasing the delay. Noteworthy, two or more multi-homing can achieve approximately an order of magnitude higher availability compared to that of conventional single-homing at the expense of a delay increase up to two times. By using MHND, flexible network design is achieved based on the acceptable delay in service and the required availability.
{"title":"MHND: Multi-Homing Network Design Model for Delay Sensitive Applications","authors":"Akio Kawabata, Bijoy Chand Chatterjee, E. Oki","doi":"10.1587/transcom.2023ebp3046","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3046","url":null,"abstract":"SUMMARY When mission-critical applications are provided over a network, high availability is required in addition to a low delay. This paper proposes a multi-homing network design model, named MHND, that achieves low delay, high availability, and the order guarantee of events. MHND maintains the event occurrence order with a multi-homing config-uration using conservative synchronization. We formulate MHND as an integer linear programming problem to minimize the delay. We prove that the distributed server allocation problem with MHND is NP-complete. Nu-mericalresultsindicatethat,asamulti-homingnumber,whichisthenumber of servers to which each user belongs, increases, the availability increases while increasing the delay. Noteworthy, two or more multi-homing can achieve approximately an order of magnitude higher availability compared to that of conventional single-homing at the expense of a delay increase up to two times. By using MHND, flexible network design is achieved based on the acceptable delay in service and the required availability.","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2023ebp3033
Kiminobu Makino, T. Nakagawa, N. Iai
SUMMARY Thispaperproposesandevaluatesmachinelearning(ML)- basedcompensationmethods forthetransmit(Tx) weightmatricesofactual singular value decomposition (SVD)-multiple-input and multiple-output (MIMO) transmissions. These methods train ML models and compensate theTxweightmatricesbyusingalargeamountoftrainingdatacreatedfromstatisticaldistributions.Moreover,thispaperproposessimplifiedchannel metricsbasedonthechannelqualityofactualSVD-MIMOtransmissionstoevaluatecompensationperformance.Theoptimalparametersaredeter-mined from many ML parameters by using the metrics, and the metrics for this determination are evaluated. Finally, a comprehensive computer simulation shows that the optimal parameters improve performance by up to 7.0dB compared with the conventional method.
{"title":"Machine Learning-based Compensation Methods for Weight Matrices of SVD-MIMO","authors":"Kiminobu Makino, T. Nakagawa, N. Iai","doi":"10.1587/transcom.2023ebp3033","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3033","url":null,"abstract":"SUMMARY Thispaperproposesandevaluatesmachinelearning(ML)- basedcompensationmethods forthetransmit(Tx) weightmatricesofactual singular value decomposition (SVD)-multiple-input and multiple-output (MIMO) transmissions. These methods train ML models and compensate theTxweightmatricesbyusingalargeamountoftrainingdatacreatedfromstatisticaldistributions.Moreover,thispaperproposessimplifiedchannel metricsbasedonthechannelqualityofactualSVD-MIMOtransmissionstoevaluatecompensationperformance.Theoptimalparametersaredeter-mined from many ML parameters by using the metrics, and the metrics for this determination are evaluated. Finally, a comprehensive computer simulation shows that the optimal parameters improve performance by up to 7.0dB compared with the conventional method.","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67305251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2022ebp3181
Daiki Mitamura, M. Sawahashi, Y. Kishiyama
{"title":"Performance of Broadcast Channel Using Hierarchical Modulation in OFDM Downlink","authors":"Daiki Mitamura, M. Sawahashi, Y. Kishiyama","doi":"10.1587/transcom.2022ebp3181","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3181","url":null,"abstract":"","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67303873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1587/transcom.2022ebp3204
H. Saito
SUMMARY The performance of a fully wireless-power-transfer (WPT) node network, in which each node transfers (and receives) energy through a wirelesschannelwhenithassufficient(andinsufficient)energyinitsbattery,wastheoreticallyanalyzed.Thelostjobratio(LJR),namely,istheratioof (i)theamountofjobsthatcannotbedoneduetobatteryofanoderunningoutto(ii)theamountofjobsthatshouldbedone,isusedasaperformance metric.Itdescribestheeffectofthebatteryofeachnoderunningoutandhowmuchadditionalenergyisneeded.AlthoughitisknownthatWPT can reduce the probability of the battery running out among a few nodes within a small area, the performance of a fully WPT network has not been clarified. By using stochastic geometry and first-passage-time analysis for a diffusion process, the expected LJR was theoretically derived. Numerical examples demonstrate that the key parameters determining the performance of the network are node density, threshold switching of statuses between “transferring energy” and “receiving energy,” and the parameters of power conversion. They also demonstrate the followings: (1) The mean energy stored in the node battery decreases in the networks because of the loss caused by WPT, and a fully WPT network cannot decrease the probability of the battery running out under the current WPT efficiency. (2) When the saturation value of power conversion increases, a fully WPT network can decrease the probability of the battery running out although the mean energy stored in the node battery still decreases in the networks. This result is explained by the fact that the variance of stored energy in each node battery becomes smaller due to transfer of energy from nodes of sufficient energy to nodes of insufficient energy. key words:
{"title":"Theoretical Analysis of Fully Wireless-Power-Transfer Node Networks","authors":"H. Saito","doi":"10.1587/transcom.2022ebp3204","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3204","url":null,"abstract":"SUMMARY The performance of a fully wireless-power-transfer (WPT) node network, in which each node transfers (and receives) energy through a wirelesschannelwhenithassufficient(andinsufficient)energyinitsbattery,wastheoreticallyanalyzed.Thelostjobratio(LJR),namely,istheratioof (i)theamountofjobsthatcannotbedoneduetobatteryofanoderunningoutto(ii)theamountofjobsthatshouldbedone,isusedasaperformance metric.Itdescribestheeffectofthebatteryofeachnoderunningoutandhowmuchadditionalenergyisneeded.AlthoughitisknownthatWPT can reduce the probability of the battery running out among a few nodes within a small area, the performance of a fully WPT network has not been clarified. By using stochastic geometry and first-passage-time analysis for a diffusion process, the expected LJR was theoretically derived. Numerical examples demonstrate that the key parameters determining the performance of the network are node density, threshold switching of statuses between “transferring energy” and “receiving energy,” and the parameters of power conversion. They also demonstrate the followings: (1) The mean energy stored in the node battery decreases in the networks because of the loss caused by WPT, and a fully WPT network cannot decrease the probability of the battery running out under the current WPT efficiency. (2) When the saturation value of power conversion increases, a fully WPT network can decrease the probability of the battery running out although the mean energy stored in the node battery still decreases in the networks. This result is explained by the fact that the variance of stored energy in each node battery becomes smaller due to transfer of energy from nodes of sufficient energy to nodes of insufficient energy. key words:","PeriodicalId":50385,"journal":{"name":"IEICE Transactions on Communications","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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