Pub Date : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174014
Urban Sedlar, L. Š. Južnič, M. Volk
In this paper we present a prototype implementation of an iteratively improving low-interaction Internet-of-Things (IoT) honeypot, based on serving responses of real IoT devices obtained through IoT search engines, as well as devices and services under our own control. The experiment was designed to confirm if this is a viable approach to mimicking a heterogeneous group of blackbox devices. In the experiment we focused on only one of the protocols used in the IoT world, the Hypertext Transfer Protocol (HTTP), primarily due to widespread use and mature tooling. Our findings show that it is trivial to learn enough responses to induce deeper probing, and that some of the knowledge discovered in this way could not have been obtained by using any other publicly available resources.
{"title":"An Iteratively-Improving Internet-of-Things Honeypot Experiment","authors":"Urban Sedlar, L. Š. Južnič, M. Volk","doi":"10.1109/CoBCom49975.2020.9174014","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174014","url":null,"abstract":"In this paper we present a prototype implementation of an iteratively improving low-interaction Internet-of-Things (IoT) honeypot, based on serving responses of real IoT devices obtained through IoT search engines, as well as devices and services under our own control. The experiment was designed to confirm if this is a viable approach to mimicking a heterogeneous group of blackbox devices. In the experiment we focused on only one of the protocols used in the IoT world, the Hypertext Transfer Protocol (HTTP), primarily due to widespread use and mature tooling. Our findings show that it is trivial to learn enough responses to induce deeper probing, and that some of the knowledge discovered in this way could not have been obtained by using any other publicly available resources.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124379672","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174177
Daniel Kraus, K. Diwold, E. Leitgeb
When designing dependable communication systems for industrial application scenarios, the application environment where the solution will be integrated plays a crucial role. This study demonstrates how simulations can be used to integrate a target environment in the design process from an early stage. This allows to optimize wireless sensor networks (WSNs) in specific environments in terms of hardware requirements (e.g. antenna) and topology. The article discusses several application scenarios within the 2.4 GHz band and demonstrates how the design process can be aided by simulation to achieve dependable communication in harsh environments.
{"title":"Getting on Track – Simulation-aided Design of Wireless IoT Sensor Systems","authors":"Daniel Kraus, K. Diwold, E. Leitgeb","doi":"10.1109/CoBCom49975.2020.9174177","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174177","url":null,"abstract":"When designing dependable communication systems for industrial application scenarios, the application environment where the solution will be integrated plays a crucial role. This study demonstrates how simulations can be used to integrate a target environment in the design process from an early stage. This allows to optimize wireless sensor networks (WSNs) in specific environments in terms of hardware requirements (e.g. antenna) and topology. The article discusses several application scenarios within the 2.4 GHz band and demonstrates how the design process can be aided by simulation to achieve dependable communication in harsh environments.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131432451","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174131
Dominic Pirker, Thomas Fischer, H. Witschnig, C. Steger
UAVs are gaining momentum in various areas, whether it is in the commercial or private sector. Novel scenarios are extending the seemingly endless list of use cases for this emerging technology. To avoid ungoverned proliferation and abandoned aerial objects, not only regulations but also technical solutions are indispensable. Authentication of a UAV is required to link to the operator and respective competences. Besides appropriate competences, regulations are depending on regional authorities, which demands a studious concept to avoid insular solutions. This paper proposes a thought-through infrastructure for a secured and global operative authentication system. First, upcoming regulations are considered for the concept to make the system regulatory compliant. Then, to avoid a patchwork of proclaimed solutions, the system design is based on the principle of delegated authority, which allows the respective authorities to keep control over their domains. Further, to associate UAVs with their operators, a cryptographic link is created during a provisioning process. This link is represented by a certificate, comparable with a conventional driver’s license. The system design allows divestment of respective flight permissions, enabled by certificate revocation. Lastly, we constructed a proof-of-concept for the proposed infrastructure solution and compared it to a decentralized approach.
{"title":"Trust-Provisioning Infrastructure for a Global and Secured UAV Authentication System","authors":"Dominic Pirker, Thomas Fischer, H. Witschnig, C. Steger","doi":"10.1109/CoBCom49975.2020.9174131","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174131","url":null,"abstract":"UAVs are gaining momentum in various areas, whether it is in the commercial or private sector. Novel scenarios are extending the seemingly endless list of use cases for this emerging technology. To avoid ungoverned proliferation and abandoned aerial objects, not only regulations but also technical solutions are indispensable. Authentication of a UAV is required to link to the operator and respective competences. Besides appropriate competences, regulations are depending on regional authorities, which demands a studious concept to avoid insular solutions. This paper proposes a thought-through infrastructure for a secured and global operative authentication system. First, upcoming regulations are considered for the concept to make the system regulatory compliant. Then, to avoid a patchwork of proclaimed solutions, the system design is based on the principle of delegated authority, which allows the respective authorities to keep control over their domains. Further, to associate UAVs with their operators, a cryptographic link is created during a provisioning process. This link is represented by a certificate, comparable with a conventional driver’s license. The system design allows divestment of respective flight permissions, enabled by certificate revocation. Lastly, we constructed a proof-of-concept for the proposed infrastructure solution and compared it to a decentralized approach.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130791088","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174184
J. R. Lopera, M. Gadringer, E. Leitgeb, W. Bösch
In this paper we are presenting a power amplifier based on an RF power LDMOS transistor at 2.1 GHz with a bandwidth of 700 MHz implementing broadband impedance matching networks (BIMN) in band-pass form. The device parasitics modelled as a series RLC structure are absorbed in the input and output matching networks by proper design of matching networks in band-pass form using two different synthesis methodologies. The S21 of the amplifier shows 11.2 dB of maximum small signal gain with 2.4 dB ripple along a 700 MHz bandwidth at 2.1 GHz and S11 better than −7dB for 1. 64-2.34GHz. The band-pass matching networks are entirely designed by transmission lines modeling the behavior of the resonant parallel shunt and series LC structures that characterize a band-pass circuit. The amplifier should be able to deliver 1W of maximum output power at saturation.
{"title":"A Broadband 2.1 GHz LDMOS Power Amplifier with 700 MHz Bandwidth Implementing Band-pass Filter-Based Matching Networks","authors":"J. R. Lopera, M. Gadringer, E. Leitgeb, W. Bösch","doi":"10.1109/CoBCom49975.2020.9174184","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174184","url":null,"abstract":"In this paper we are presenting a power amplifier based on an RF power LDMOS transistor at 2.1 GHz with a bandwidth of 700 MHz implementing broadband impedance matching networks (BIMN) in band-pass form. The device parasitics modelled as a series RLC structure are absorbed in the input and output matching networks by proper design of matching networks in band-pass form using two different synthesis methodologies. The S21 of the amplifier shows 11.2 dB of maximum small signal gain with 2.4 dB ripple along a 700 MHz bandwidth at 2.1 GHz and S11 better than −7dB for 1. 64-2.34GHz. The band-pass matching networks are entirely designed by transmission lines modeling the behavior of the resonant parallel shunt and series LC structures that characterize a band-pass circuit. The amplifier should be able to deliver 1W of maximum output power at saturation.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"38 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116108128","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174151
M. Malajner, D. Gleich
The design, simulations and measurements of a sampling mixer are presented in this paper. Ultra-Wide-Band pulse radar applications demand high performance digitalization of the received RF signal with few GHz of bandwidth. Since high sampling rate analog to digital converters are very expensive and complex, we designed an inexpensive sampling mixer based on the equivalent sample time technique. A sampling mixer uses a bridge with two diodes for capturing a portion of a signal in each period. After a certain amount of repetitive periods, the sampling mixer reconstructs the original RF signal. The reconstructed signal is stretched from the sub-nanoseconds order into the microsecond order. Such stretched RF signal can be digitalized using a low rate analog to digital converter with sampling rate of a few MSa/s.
{"title":"Design of a sampling mixer for use in UWB radar applications","authors":"M. Malajner, D. Gleich","doi":"10.1109/CoBCom49975.2020.9174151","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174151","url":null,"abstract":"The design, simulations and measurements of a sampling mixer are presented in this paper. Ultra-Wide-Band pulse radar applications demand high performance digitalization of the received RF signal with few GHz of bandwidth. Since high sampling rate analog to digital converters are very expensive and complex, we designed an inexpensive sampling mixer based on the equivalent sample time technique. A sampling mixer uses a bridge with two diodes for capturing a portion of a signal in each period. After a certain amount of repetitive periods, the sampling mixer reconstructs the original RF signal. The reconstructed signal is stretched from the sub-nanoseconds order into the microsecond order. Such stretched RF signal can be digitalized using a low rate analog to digital converter with sampling rate of a few MSa/s.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122137432","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174066
A. Weiss, F. Wenzl, C. Leiner, Felix Lichtenegger, C. Sommer
We present an approach to enable 3D Visible Light Positioning (VLP) utilizing the fingerprinting method combined with the approach of track analysis. Especially in rooms with a highly symmetric arrangement of the luminaires, fingerprinting suffers from high ambiguity of the received signals. We demonstrate an approach to overcome this ambiguity by expanding fingerprinting by track analysis in 3D VLP based on angle diverse receivers. Furthermore, we give a more detailed insight on the impact of the number and the kind of the segmentations of the related optical elements for the receivers and their effect on the performance of the designed algorithm. We demonstrate that by such an approach the success rate for correct 3D position estimation can be enhanced between 29 % and 64 % in dependence of the respective angular segmentation of the receiver.
{"title":"3D Visible Light Positioning of an Angle Diverse Receiver based on Track Analysis","authors":"A. Weiss, F. Wenzl, C. Leiner, Felix Lichtenegger, C. Sommer","doi":"10.1109/CoBCom49975.2020.9174066","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174066","url":null,"abstract":"We present an approach to enable 3D Visible Light Positioning (VLP) utilizing the fingerprinting method combined with the approach of track analysis. Especially in rooms with a highly symmetric arrangement of the luminaires, fingerprinting suffers from high ambiguity of the received signals. We demonstrate an approach to overcome this ambiguity by expanding fingerprinting by track analysis in 3D VLP based on angle diverse receivers. Furthermore, we give a more detailed insight on the impact of the number and the kind of the segmentations of the related optical elements for the receivers and their effect on the performance of the designed algorithm. We demonstrate that by such an approach the success rate for correct 3D position estimation can be enhanced between 29 % and 64 % in dependence of the respective angular segmentation of the receiver.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124537507","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174181
Mladen Pešić, Stephan Rampetzreiter, W. Pachler, H. Arthaber
Small payment accessories (e.g., watches, bracelets, rings) are becoming the future of “contactless” payment. Designing these devices as passive (batteryless) in terms of power supply is faced with challenges concerning miniaturization and compliance to standards. To evaluate performance, we introduce a simulation framework that can predict a design’s minimum operating magnetic field strength (Hmin) with an accuracy under 0.1 A/m. The framework combines S-parameter models of the device’s antenna and the ISO-standardized setup (the ISO test PCD assembly) with a data-based nonlinear model of the device’s IC. Techniques for optimizing the energy transfer are discussed (tuning and power matching) and backed by analytical and practical examples. We also demonstrate how to use the simulation framework to determine the impact of the device’s structure on energy transfer. Two designs of small payment accessories are ultimately compared, both as models in the framework and as fabricated samples. By applying power matching instead of tuning, the second design’s size can be reduced by approximately half, without significant change in Hmin. As the predicted Hmin values match the measurements, the results show that multiple design parameters can be varied within the framework to determine their effect on Hmin, which is of great assistance for finding the optimal design.
小型支付配件(如手表、手镯、戒指)正在成为“非接触式”支付的未来。将这些设备设计为无源(无电池)供电，面临着小型化和符合标准的挑战。为了评估性能，我们引入了一个仿真框架，可以预测设计的最小工作磁场强度(Hmin)，精度低于0.1 a /m。该框架将器件天线的s参数模型和ISO标准化设置(ISO测试PCD组件)与器件IC的基于数据的非线性模型相结合。讨论了优化能量传递的技术(调谐和功率匹配)，并通过分析和实际示例提供了支持。我们还演示了如何使用仿真框架来确定设备结构对能量传递的影响。最后比较了两种小型支付配件的设计，分别作为框架模型和制作样品。通过应用功率匹配而不是调谐，第二种设计的尺寸可以减少大约一半，而Hmin没有显着变化。由于预测的Hmin值与实测值吻合，结果表明在框架内可以改变多个设计参数，以确定它们对Hmin的影响，这对寻找最优设计有很大的帮助。
{"title":"Searching for the Optimal Design of Small Payment Accessories","authors":"Mladen Pešić, Stephan Rampetzreiter, W. Pachler, H. Arthaber","doi":"10.1109/CoBCom49975.2020.9174181","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174181","url":null,"abstract":"Small payment accessories (e.g., watches, bracelets, rings) are becoming the future of “contactless” payment. Designing these devices as passive (batteryless) in terms of power supply is faced with challenges concerning miniaturization and compliance to standards. To evaluate performance, we introduce a simulation framework that can predict a design’s minimum operating magnetic field strength (Hmin) with an accuracy under 0.1 A/m. The framework combines S-parameter models of the device’s antenna and the ISO-standardized setup (the ISO test PCD assembly) with a data-based nonlinear model of the device’s IC. Techniques for optimizing the energy transfer are discussed (tuning and power matching) and backed by analytical and practical examples. We also demonstrate how to use the simulation framework to determine the impact of the device’s structure on energy transfer. Two designs of small payment accessories are ultimately compared, both as models in the framework and as fabricated samples. By applying power matching instead of tuning, the second design’s size can be reduced by approximately half, without significant change in Hmin. As the predicted Hmin values match the measurements, the results show that multiple design parameters can be varied within the framework to determine their effect on Hmin, which is of great assistance for finding the optimal design.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126533120","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 : 2020-06-04DOI: 10.1109/CoBCom49975.2020.9174185
Jan Köhler, W. Bösch, E. Leitgeb, R. Teschl, D. Pommerenke
This paper presents a novel technique for 3D printing that uses an external magnetic field to direct iron dust mixed into FDM filament. The mobility of the particles during the printing process is exploited to provoke an alignment by means of a static magnetic field. This method offers a completely new possibility to design passive high-frequency components. With very good agreement to the theory a method has been developed, manufactured and was measured within the X-Band.
{"title":"Manipulating Iron Filament with Permanent Magnets for FDM Printing for X-Band","authors":"Jan Köhler, W. Bösch, E. Leitgeb, R. Teschl, D. Pommerenke","doi":"10.1109/CoBCom49975.2020.9174185","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174185","url":null,"abstract":"This paper presents a novel technique for 3D printing that uses an external magnetic field to direct iron dust mixed into FDM filament. The mobility of the particles during the printing process is exploited to provoke an alignment by means of a static magnetic field. This method offers a completely new possibility to design passive high-frequency components. With very good agreement to the theory a method has been developed, manufactured and was measured within the X-Band.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124632247","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：