Pub Date : 2023-01-01DOI: 10.1587/transcom.2022ebp3153
Taiki Suehiro, Tsuyoshi Kobayashi, O. Takyu, Y. Fuwa
{"title":"Data Gathering Scheme for Event Detection and Recognition in Low Power Wide Area Networks","authors":"Taiki Suehiro, Tsuyoshi Kobayashi, O. Takyu, Y. Fuwa","doi":"10.1587/transcom.2022ebp3153","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3153","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"1 1","pages":"669-685"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90166167","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.2022ebp3024
Mitsuki Ito, Fujun He, Kento Yokouchi, E. Oki
{"title":"Robust Optimization Model for Primary and Backup Capacity Allocations against Multiple Physical Machine Failures under Uncertain Demands in Cloud","authors":"Mitsuki Ito, Fujun He, Kento Yokouchi, E. Oki","doi":"10.1587/transcom.2022ebp3024","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3024","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"38 1","pages":"18-34"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83334600","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.2022ebp3097
Han Zhang, Fujun He, E. Oki
{"title":"Shared Backup Allocation Model of Middlebox Based on Workload-Dependent Failure Rate","authors":"Han Zhang, Fujun He, E. Oki","doi":"10.1587/transcom.2022ebp3097","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3097","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"116 1","pages":"427-438"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77274717","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.2022ebp3042
Yuanfa Ji, Si-si Song, Xiyan Sun, Ning Guo, Youming Li
SUMMARY In order to improve the frequency band utilization and avoid mutual interference between signals, the BD3 satellite signals adopt Binary O ff set Carrier (BOC) modulation. On one hand, BOC modulation has a narrow main peak width and strong anti-interference ability; on the other hand, the phenomenon of false acquisition locking caused by the multi-peak characteristic of BOC modulation itself needs to be resolved. In this context, this paper proposes a new BOC(n,n) unambiguous acquisition algorithm based on segmentation reconstruction. The algorithm is based on splitting the local BOC signal into four parts in each subcarrier period. The branch signal and the received signal are correlated with the received signal to generate four branch correlation signals. After a series of combined reconstructions, the final signal detection function completely eliminates secondary peaks. A simulation shows that the algorithm can completely eliminate the sub-peak interference for the BOC signals modulated by sub-carriers with di ff erent phase. The characteristics of narrow correlation peak are retained. Experiments show that the proposed algorithm has superior performance in detection probability and peak-to-average ratio.
{"title":"A Novel Unambiguous Acquisition Algorithm Based on Segmentation Reconstruction for BOC(n,n) Signal","authors":"Yuanfa Ji, Si-si Song, Xiyan Sun, Ning Guo, Youming Li","doi":"10.1587/transcom.2022ebp3042","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3042","url":null,"abstract":"SUMMARY In order to improve the frequency band utilization and avoid mutual interference between signals, the BD3 satellite signals adopt Binary O ff set Carrier (BOC) modulation. On one hand, BOC modulation has a narrow main peak width and strong anti-interference ability; on the other hand, the phenomenon of false acquisition locking caused by the multi-peak characteristic of BOC modulation itself needs to be resolved. In this context, this paper proposes a new BOC(n,n) unambiguous acquisition algorithm based on segmentation reconstruction. The algorithm is based on splitting the local BOC signal into four parts in each subcarrier period. The branch signal and the received signal are correlated with the received signal to generate four branch correlation signals. After a series of combined reconstructions, the final signal detection function completely eliminates secondary peaks. A simulation shows that the algorithm can completely eliminate the sub-peak interference for the BOC signals modulated by sub-carriers with di ff erent phase. The characteristics of narrow correlation peak are retained. Experiments show that the proposed algorithm has superior performance in detection probability and peak-to-average ratio.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"8 1","pages":"287-295"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74315949","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.2022ebp3091
Taichi Miya, Kohta Ohshima, Yoshiaki Kitaguchi, K. Yamaoka
{"title":"Adaptive GW Relocation and Strategic Flow Rerouting for Heterogeneous Drone Swarms","authors":"Taichi Miya, Kohta Ohshima, Yoshiaki Kitaguchi, K. Yamaoka","doi":"10.1587/transcom.2022ebp3091","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3091","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"46 1","pages":"331-351"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85687611","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.2022ebp3053
Sang-kyu Kim
{"title":"Scattering of a Coaxial Cable with a Grooved Flange Using the Associated Weber-Orr Transform","authors":"Sang-kyu Kim","doi":"10.1587/transcom.2022ebp3053","DOIUrl":"https://doi.org/10.1587/transcom.2022ebp3053","url":null,"abstract":"","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"100 1","pages":"260-266"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75690844","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.2023pni0001
Takashi MIYAMURA, Akira MISAWA
In this paper, we investigate the evolution of an optical network architecture and discuss the future direction of research on optical network design and control. We review existing research on optical network design and control and present some open challenges. One of the important open challenges lies in multilayer resource optimization including IT and optical network resources. We propose an adaptive joint optimization method of IT resources and optical spectrum under time-varying traffic demand in optical networks while avoiding an increase in operation cost. We formulate the problem as mixed integer linear programming and then quantitatively evaluate the trade-off relationship between the optimality of reconfiguration and operation cost. We demonstrate that we can achieve sufficient network performance through the adaptive joint optimization while suppressing an increase in operation cost.
{"title":"Recent progress in optical network design and control towards human-centered smart society","authors":"Takashi MIYAMURA, Akira MISAWA","doi":"10.1587/transcom.2023pni0001","DOIUrl":"https://doi.org/10.1587/transcom.2023pni0001","url":null,"abstract":"In this paper, we investigate the evolution of an optical network architecture and discuss the future direction of research on optical network design and control. We review existing research on optical network design and control and present some open challenges. One of the important open challenges lies in multilayer resource optimization including IT and optical network resources. We propose an adaptive joint optimization method of IT resources and optical spectrum under time-varying traffic demand in optical networks while avoiding an increase in operation cost. We formulate the problem as mixed integer linear programming and then quantitatively evaluate the trade-off relationship between the optimality of reconfiguration and operation cost. We demonstrate that we can achieve sufficient network performance through the adaptive joint optimization while suppressing an increase in operation cost.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135501214","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.2023ebp3091
Zhaohu PAN, Hang LI, Xiaojing HUANG
In this paper, we investigate optimal design of millimeter-wave (mmWave) multiuser line-of-sight multiple-input-multiple-output (LOS MIMO) systems using hybrid arrays of subarrays based on hybrid block diagonalization (BD) precoding and combining scheme. By introducing a general 3D geometric channel model, the optimal subarray separation products of the transmitter and receiver for maximizing sum-rate is designed in terms of two regular configurations of adjacent subarrays and interleaved subarrays for different users, respectively. We analyze the sensitivity of the optimal design parameters on performance in terms of a deviation factor, and derive expressions for the eigenvalues of the multiuser equivalent LOS MIMO channel matrix, which are also valid for non-optimal design. Simulation results show that the interleaved subarrays can support longer distance communication than the adjacent subarrays given the appropriate fixed subarray deployment.
{"title":"Optimal Design of Multiuser mmWave LOS MIMO Systems Using Hybrid Arrays of Subarrays","authors":"Zhaohu PAN, Hang LI, Xiaojing HUANG","doi":"10.1587/transcom.2023ebp3091","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3091","url":null,"abstract":"In this paper, we investigate optimal design of millimeter-wave (mmWave) multiuser line-of-sight multiple-input-multiple-output (LOS MIMO) systems using hybrid arrays of subarrays based on hybrid block diagonalization (BD) precoding and combining scheme. By introducing a general 3D geometric channel model, the optimal subarray separation products of the transmitter and receiver for maximizing sum-rate is designed in terms of two regular configurations of adjacent subarrays and interleaved subarrays for different users, respectively. We analyze the sensitivity of the optimal design parameters on performance in terms of a deviation factor, and derive expressions for the eigenvalues of the multiuser equivalent LOS MIMO channel matrix, which are also valid for non-optimal design. Simulation results show that the interleaved subarrays can support longer distance communication than the adjacent subarrays given the appropriate fixed subarray deployment.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135702247","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}
This study investigates the improvement of the channel capacity of 5-GHz-band multiple-input multiple-output (MIMO) communication using microwave-guided modes propagating along a polyvinyl chloride (PVC) pipe wall for a buried pipe inspection robot. We design a planar Yagi-Uda antenna to reduce transmission losses in communication with PVC pipe walls as propagation paths. Coupling efficiency between the antenna and a PVC pipe is improved by attaching a PVC adapter with the same curvature as the PVC pipe's inner wall to the Yagi-Uda antenna to eliminate any gap between the antenna and the inner wall of the PVC pipe. The use of a planar Yagi-Uda antenna with a PVC adaptor decreases the transmission loss of a 5-GHz-band microwave signal propagating along a 1-m-lomg straight PVC pipe wall by 7 dB compared to a dipole antenna. The channel capacity of a 2 × 2 MIMO system using planar Yagi-Uda antennas is more than twice that of the system using dipole antennas.
{"title":"Improvement of Channel Capacity of MIMO Communication Using Yagi-Uda Planar Antennas with a Propagation Path through a PVC Pipe Wall","authors":"Akihiko Hirata, Keisuke Akiyama, Shunsuke Kabe, Hiroshi Murata, Masato Mizukami","doi":"10.1587/transcom.2023ebp3061","DOIUrl":"https://doi.org/10.1587/transcom.2023ebp3061","url":null,"abstract":"This study investigates the improvement of the channel capacity of 5-GHz-band multiple-input multiple-output (MIMO) communication using microwave-guided modes propagating along a polyvinyl chloride (PVC) pipe wall for a buried pipe inspection robot. We design a planar Yagi-Uda antenna to reduce transmission losses in communication with PVC pipe walls as propagation paths. Coupling efficiency between the antenna and a PVC pipe is improved by attaching a PVC adapter with the same curvature as the PVC pipe's inner wall to the Yagi-Uda antenna to eliminate any gap between the antenna and the inner wall of the PVC pipe. The use of a planar Yagi-Uda antenna with a PVC adaptor decreases the transmission loss of a 5-GHz-band microwave signal propagating along a 1-m-lomg straight PVC pipe wall by 7 dB compared to a dipole antenna. The channel capacity of a 2 × 2 MIMO system using planar Yagi-Uda antennas is more than twice that of the system using dipole antennas.","PeriodicalId":48825,"journal":{"name":"IEICE Transactions on Communications","volume":"113 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136257171","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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