Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880792
Yingjie Liu, Ziad Hatab, E. Leitgeb, Peiyuan Wang
The coupling efficiency of a free space optical (FSO) prototype based on fiber coupling technology was analyzed for different distances, combining numerical simulation and measurements under different weather conditions. When unaffected by the weather, the measurements are in good agreement with the simulated results. Based on the measurements for a distance of 60 meter, the impact of different weather conditions on the FSO link was assessed. The result shows that the link loss differs greatly under these three weather conditions, i.e., snow, rain and cloud. Combined with empirical formulas for the specific attenuation of snow and rain, the physical mechanism was inferred. The results indicate that the high attenuation in times of rain and cloud should be ascribed to the water vapor absorption in the near-infrared region, which needs further investigating.
{"title":"Experimental Coupling Loss Analysis of Free Space Optical Link under different Weather Conditions","authors":"Yingjie Liu, Ziad Hatab, E. Leitgeb, Peiyuan Wang","doi":"10.1109/CoBCom55489.2022.9880792","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880792","url":null,"abstract":"The coupling efficiency of a free space optical (FSO) prototype based on fiber coupling technology was analyzed for different distances, combining numerical simulation and measurements under different weather conditions. When unaffected by the weather, the measurements are in good agreement with the simulated results. Based on the measurements for a distance of 60 meter, the impact of different weather conditions on the FSO link was assessed. The result shows that the link loss differs greatly under these three weather conditions, i.e., snow, rain and cloud. Combined with empirical formulas for the specific attenuation of snow and rain, the physical mechanism was inferred. The results indicate that the high attenuation in times of rain and cloud should be ascribed to the water vapor absorption in the near-infrared region, which needs further investigating.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127354732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880824
Mariusz G∤ąbowski, M. Sobieraj
Today, when the demand for bandwidth increases in networks, it becomes necessary to ensure an appropriate and reliable service level for certain traffic classes. Optimal allocation and use of resources can be achieved through the use of call admission control (CAC) mechanisms in networks. One of the most popular mechanisms is the resource reservation mechanism and the threshold mechanism. In the reservation mechanism, some resources are available only to selected (predefined) services. However, when the threshold mechanism is used, the amount of resources allocated to individual classes depends on the network load. This article discusses simulation studies of the traffic characteristics of elastic optical network (EON) nodes with a Clos structure and implemented CAC mechanisms. In the article, the results obtained with the use of the simulator developed by the author were presented.
{"title":"Analysis of Call Admission Control Mechanisms in Nodes of Elastic Optical Networks","authors":"Mariusz G∤ąbowski, M. Sobieraj","doi":"10.1109/CoBCom55489.2022.9880824","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880824","url":null,"abstract":"Today, when the demand for bandwidth increases in networks, it becomes necessary to ensure an appropriate and reliable service level for certain traffic classes. Optimal allocation and use of resources can be achieved through the use of call admission control (CAC) mechanisms in networks. One of the most popular mechanisms is the resource reservation mechanism and the threshold mechanism. In the reservation mechanism, some resources are available only to selected (predefined) services. However, when the threshold mechanism is used, the amount of resources allocated to individual classes depends on the network load. This article discusses simulation studies of the traffic characteristics of elastic optical network (EON) nodes with a Clos structure and implemented CAC mechanisms. In the article, the results obtained with the use of the simulator developed by the author were presented.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121790694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/cobcom55489.2022.9880748
M. Marciniak
{"title":"Optical Wireless Communications international standards — A review","authors":"M. Marciniak","doi":"10.1109/cobcom55489.2022.9880748","DOIUrl":"https://doi.org/10.1109/cobcom55489.2022.9880748","url":null,"abstract":"","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131991771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880770
S. Serečunová, D. Seyringer, D. Pudiš, T. Mizera, F. Uherek, H. Seyringer
Design, simulation, and optimization of the $1times 4$ optical three-dimensional multimode interference splitter using IP-Dip polymer as a core and polydimethylsiloxane (PDMS) Sylgard 184 as a cladding is demonstrated. The splitter was simulated by using beam propagation method in BeamPROP simulation module of RSoft photonic tool and optimized for an operating wavelength of 1.55 $mumathrm{m}$. According to the minimum insertion loss, the dimensions of the splitter were optimized for a waveguide with a core size of $4times 4 mu mathrm{m}^{2}$. The objective of the study is to create the design for fabrication by three-dimensional direct laser writing optical lithography.
介绍了以IP-Dip聚合物为芯层、聚二甲基硅氧烷(PDMS) Sylgard 184为包层的1 × 4$光学三维多模干涉分路器的设计、仿真和优化。利用RSoft光子工具的BeamPROP仿真模块中的光束传播方法对该分光器进行了仿真，优化后的工作波长为1.55 $mumathrm{m}$。根据最小插入损耗，优化了分路器的尺寸，使其适合芯尺寸为$4 × 4 mu mathrm{m}^{2}$的波导。本研究的目的是创建三维直接激光书写光学光刻的制造设计。
{"title":"Design and Simulation of 3D 1×4 Multimode Interference Splitter","authors":"S. Serečunová, D. Seyringer, D. Pudiš, T. Mizera, F. Uherek, H. Seyringer","doi":"10.1109/CoBCom55489.2022.9880770","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880770","url":null,"abstract":"Design, simulation, and optimization of the $1times 4$ optical three-dimensional multimode interference splitter using IP-Dip polymer as a core and polydimethylsiloxane (PDMS) Sylgard 184 as a cladding is demonstrated. The splitter was simulated by using beam propagation method in BeamPROP simulation module of RSoft photonic tool and optimized for an operating wavelength of 1.55 $mumathrm{m}$. According to the minimum insertion loss, the dimensions of the splitter were optimized for a waveguide with a core size of $4times 4 mu mathrm{m}^{2}$. The objective of the study is to create the design for fabrication by three-dimensional direct laser writing optical lithography.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126730771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880640
Gerzon Gomez-Bravo, R. Teschl, W. Bösch
This paper presents the design of an Archimedean Spiral Antenna (ASA) for use in an indoor localization system. The ultra wideband antenna operates in the frequency range between 3 and 7 GHz and achieves a gain higher than 2.87 dB and axial ratio lower than 3 dB with a Half Power Beamwidth of 90.5°. With the addition of a loading ring, the antenna presents a size reduction of 30% in comparison traditional Archimedean Spiral Antennas.
{"title":"Circularly Polarized Ultra-Wideband Antenna for Dependable Wireless Localization Systems","authors":"Gerzon Gomez-Bravo, R. Teschl, W. Bösch","doi":"10.1109/CoBCom55489.2022.9880640","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880640","url":null,"abstract":"This paper presents the design of an Archimedean Spiral Antenna (ASA) for use in an indoor localization system. The ultra wideband antenna operates in the frequency range between 3 and 7 GHz and achieves a gain higher than 2.87 dB and axial ratio lower than 3 dB with a Half Power Beamwidth of 90.5°. With the addition of a loading ring, the antenna presents a size reduction of 30% in comparison traditional Archimedean Spiral Antennas.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134422256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880686
M. Gebhart, Amira Hedhili, Peter Lukan
Although NFC has reached a wide market coverage in the field today, applications involving through-metal communication without any slots or holes are physically blocked as the alternating H-field cannot pass through a conductor. We investigate through-metal communication using acoustic wave technology and practically show, it can work well for signals and protocols used in NFC communication. We discuss relevant aspects for this new technology that can open up new application fields for NFC and we present a miniaturized prototype acoustic ID tag based on direct chip attach technology.
{"title":"NFC communication through metal","authors":"M. Gebhart, Amira Hedhili, Peter Lukan","doi":"10.1109/CoBCom55489.2022.9880686","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880686","url":null,"abstract":"Although NFC has reached a wide market coverage in the field today, applications involving through-metal communication without any slots or holes are physically blocked as the alternating H-field cannot pass through a conductor. We investigate through-metal communication using acoustic wave technology and practically show, it can work well for signals and protocols used in NFC communication. We discuss relevant aspects for this new technology that can open up new application fields for NFC and we present a miniaturized prototype acoustic ID tag based on direct chip attach technology.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115111447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880629
Neda Maleki, Arslan Musaddiq, Daniel Toll, Francis Palma, Tobias Olsson, David Mozart, Mustafa Omareen, F. Ahlgren
The Internet of Things (IoT) have shown numerous potential applications that can enhance our quality of life. IoT is becoming a core technology to bring smart homes, smart cities, and smart industries into reality. However, with potential benefits comes a challenge of sustainability, and one major concern is to minimize energy consumption. In a citywide area, managing the operation of such large-scale IoT networking is one of the complex tasks. One of the ways is to utilize dynamic sensing scheduling where the IoT device goes to the sleep mode and prevents unnecessary data transmission. In this paper, we propose a dynamic sensing (DynaSens) algorithm for an IoT-based waste management system. This algorithm helps to reduce the waste bin overflowing, thus, provides better sanitation, and it is also helpful in reducing the fuel cost of waste collection vehicles. Our work utilizes measured values such as current consumption, LiDAR measurement time, and LoRa transmission time as the input data for the simulation experiment to evaluate energy consumption. We also assessed DynaSens using a real dataset obtained from a recycling house. We use Pycom LoPy4 micro-controller as a development board. For a number of garbage-thrown scenarios, DynaSens enables longer battery longevity by reducing the repeated execution of the same tasks.
{"title":"DynaSens: Dynamic Scheduling for IoT Devices Sustainability","authors":"Neda Maleki, Arslan Musaddiq, Daniel Toll, Francis Palma, Tobias Olsson, David Mozart, Mustafa Omareen, F. Ahlgren","doi":"10.1109/CoBCom55489.2022.9880629","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880629","url":null,"abstract":"The Internet of Things (IoT) have shown numerous potential applications that can enhance our quality of life. IoT is becoming a core technology to bring smart homes, smart cities, and smart industries into reality. However, with potential benefits comes a challenge of sustainability, and one major concern is to minimize energy consumption. In a citywide area, managing the operation of such large-scale IoT networking is one of the complex tasks. One of the ways is to utilize dynamic sensing scheduling where the IoT device goes to the sleep mode and prevents unnecessary data transmission. In this paper, we propose a dynamic sensing (DynaSens) algorithm for an IoT-based waste management system. This algorithm helps to reduce the waste bin overflowing, thus, provides better sanitation, and it is also helpful in reducing the fuel cost of waste collection vehicles. Our work utilizes measured values such as current consumption, LiDAR measurement time, and LoRa transmission time as the input data for the simulation experiment to evaluate energy consumption. We also assessed DynaSens using a real dataset obtained from a recycling house. We use Pycom LoPy4 micro-controller as a development board. For a number of garbage-thrown scenarios, DynaSens enables longer battery longevity by reducing the repeated execution of the same tasks.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125514634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880656
W. Gappmair, H. Schlemmer
The reliable recovery of transmission parameters is of paramount importance not only for radio frequency, but also for optical wireless communication receivers. In the context of a bandlimited optical intensity link, achieved by a PAM scheme and squared raised cosine or squared double jump functions used for pulse shaping, feedforward algorithms for symbol timing estimation have been developed in recent papers published by the first author. This work is extended by the current contribution, where a feedback solution is discussed with no knowledge about data symbols. Such non-data-aided (blind) concepts are a perfect instrument to track smaller vari-ations of the timing error affecting the payload data. It is pro-posed that a Gardner detector is used for the recovery loop, which is investigated with respect to open-loop characteristic, jitter performance, and acquisition behavior.
{"title":"Feedback Solution for Blind Symbol Timing Recovery in Bandlimited Optical Intensity Channels","authors":"W. Gappmair, H. Schlemmer","doi":"10.1109/CoBCom55489.2022.9880656","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880656","url":null,"abstract":"The reliable recovery of transmission parameters is of paramount importance not only for radio frequency, but also for optical wireless communication receivers. In the context of a bandlimited optical intensity link, achieved by a PAM scheme and squared raised cosine or squared double jump functions used for pulse shaping, feedforward algorithms for symbol timing estimation have been developed in recent papers published by the first author. This work is extended by the current contribution, where a feedback solution is discussed with no knowledge about data symbols. Such non-data-aided (blind) concepts are a perfect instrument to track smaller vari-ations of the timing error affecting the payload data. It is pro-posed that a Gardner detector is used for the recovery loop, which is investigated with respect to open-loop characteristic, jitter performance, and acquisition behavior.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130978671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880660
Juraj Bišćan, Mislav Has, K. Trzec, M. Kusek
Currently, the 2G mobile network in the world is shutting down and the existing implementations that used it for sensing should be replaced by new technologies. This paper analyzes new technologies and selects the best IoT (Internet of Things) communication options for creating small and medium networks of sensor devices in different physical environments and communication conditions in the agriculture. The paper analyzes NB-IoT, Cat-M1, LoRaWAN, WiFi, 3G/4G in terms of subscription price, communication capabilities, ease of use, etc. The best configuration is defined for different use cases.
{"title":"Selecting IoT Communication Technologies for Sensing in Agriculture","authors":"Juraj Bišćan, Mislav Has, K. Trzec, M. Kusek","doi":"10.1109/CoBCom55489.2022.9880660","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880660","url":null,"abstract":"Currently, the 2G mobile network in the world is shutting down and the existing implementations that used it for sensing should be replaced by new technologies. This paper analyzes new technologies and selects the best IoT (Internet of Things) communication options for creating small and medium networks of sensor devices in different physical environments and communication conditions in the agriculture. The paper analyzes NB-IoT, Cat-M1, LoRaWAN, WiFi, 3G/4G in terms of subscription price, communication capabilities, ease of use, etc. The best configuration is defined for different use cases.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131750635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-12DOI: 10.1109/CoBCom55489.2022.9880668
P. Barcik, J. Hrabina, M. Čížek, P. Skryja, Z. Kolka, L. Pravdova
The paper reports on the transfer of stable optical frequency through free-space optical testbed and a fiber link testbed. The measurement results show the phase noise of free-space optical channel without turbulence, with atmospheric turbulence and with active stabilization of the received optical wave by MEMS mirror. The results are compared with a 1-Hz linewidth laser.
{"title":"Stable Optical Frequency Transmission over a Free Space Optical Testbed","authors":"P. Barcik, J. Hrabina, M. Čížek, P. Skryja, Z. Kolka, L. Pravdova","doi":"10.1109/CoBCom55489.2022.9880668","DOIUrl":"https://doi.org/10.1109/CoBCom55489.2022.9880668","url":null,"abstract":"The paper reports on the transfer of stable optical frequency through free-space optical testbed and a fiber link testbed. The measurement results show the phase noise of free-space optical channel without turbulence, with atmospheric turbulence and with active stabilization of the received optical wave by MEMS mirror. The results are compared with a 1-Hz linewidth laser.","PeriodicalId":131597,"journal":{"name":"2022 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124791694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：