2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)最新文献

Optimization of Thick BoR Monopole Antennas Using Differential Evolution 基于差分演化的厚BoR单极天线优化

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9173992

Marko N. Radović, Gorazd Lešnjak, P. Kitak, P. Planinsic

引用次数: 1

Network Bandwidth Usage Forecast in Content Delivery Networks 内容分发网络中的网络带宽使用预测

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174180

A. Teker, Ahmet Haydar Örnek, B. Canberk

引用次数: 1

Thermal Vacuum Tests and Thermal Properties on ESA’s OPS-SAT mission 欧空局OPS-SAT任务的热真空测试和热性能

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174095

M. Kubicka, O. Koudelka, David Evans, R. Zeif, Maximilian Henkel, A. Hörmer

{"title":"Thermal Vacuum Tests and Thermal Properties on ESA’s OPS-SAT mission","authors":"M. Kubicka, O. Koudelka, David Evans, R. Zeif, Maximilian Henkel, A. Hörmer","doi":"10.1109/CoBCom49975.2020.9174095","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174095","url":null,"abstract":"OPS-SAT is a 3U CubeSat, designed for versatile use as an experimental platform for industry and universities, to demonstrate new operational concepts and prototype software in a real space environment. The satellite offers numerous payloads alongside the satellite bus, all of which might be used by an OPS-SAT experiment. The unpredictable nature of experiments with respect to the use of payload components raises certain unknowns, in particular concerning power consumption. As a result, the thermal behaviour throughout the satellite depends largely on which of the several on-board experiments and the associated payloads are switched on. OPS-SAT offers a variety of communication modules, such as a UHF transceiver, an S-Band transceiver, a Software Defined Radio (SDR), an X-Band transmitter and an optical receiver. The peak power consumption of OPS-SAT may exceed 30 watts during high power experiments. The S-Band transceiver consumes up to 10 watts during ground station passes and the so-called Satellite Experimental Processing Platform (SEPP), the heart of OPS-SAT experiments, consumes up to 8 watts constantly. This work provides an overview of the design and the thermal considerations on OPS-SAT and the results of the thermal vacuum (TVAC) test campaign. The results yield an average thermo-optical emissivity of 0.79 to 0.84 and the thermal power distribution on the spacecraft surface, and demonstrate the special case of the thermally isolated S-Band and X-Band patch antennas. Based on the derived results, predictions can be made about the thermal behaviour during various load cases and during periods with an active S-Band transmitter.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"102 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":"123525938","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}

引用次数: 1

Interference classification for IEEE 802.15.4 networks IEEE 802.15.4网络干扰分类

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174119

U. Pešović, Sladjana M. Djurasevic, Vanja Luković, P. Planinsic

引用次数: 3

The Local Rényi Entropy Based Shrinkage Algorithm for Sparse TFD Reconstruction 稀疏TFD重构的局部rsamnyi熵收缩算法

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174168

Vedran Jurdana, I. Volaric, V. Sucic

{"title":"The Local Rényi Entropy Based Shrinkage Algorithm for Sparse TFD Reconstruction","authors":"Vedran Jurdana, I. Volaric, V. Sucic","doi":"10.1109/CoBCom49975.2020.9174168","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174168","url":null,"abstract":"Observing a non-stationary signal with the time and frequency representation being mutually exclusive often does not provide enough information. Thus, the joint time-frequency distribution (TFD) is used as a convenient and powerful tool for analysis of such signals. Although TFD overcomes many signal representation limitations, it also introduces additional challenges. The removal of artefacts, also called the cross-terms, while maintaining a high concentration of the signal components (auto-terms) is the main problem of the time-frequency (TF) signal analysis. Among different approaches of solving this problem, in this paper we are investigating the advantages of the TFD sparsity, that is, the fact that the energy is accumulated around the instantaneous frequency law of the signal components. In this paper, we present a sparse TFD reconstruction algorithm based on the iterative shrinkage algorithm. The shrinkage is performed independently for each TFD time-and frequency-slice by taking advantage obtained from the short-term and the narrow-band Rényi entropy. Using the TFD concentration measure and reconstruction algorithm execution time, the obtained results have been compared to the state-of-the-art sparse reconstruction algorithms.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"12 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":"125134523","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}

引用次数: 4

CoBCom 2020 Cover Page cocom2020封面页

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/cobcom49975.2020.9174178

引用次数: 0

Implementation of Experimental Modulator into the Luminaire of Public Lighting Based on the OOK Modulation with Bias-Tee 基于偏置- tee调制的实验性调制器在公共照明灯具中的实现

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174025

S. Hejduk, T. Stratil, J. Latal, Ales Vanderka, L. Hajek, J. Kolar

引用次数: 0

Low Noise IQ Generation Employed in an Active Vector Modulator for 5G Ka-Band Beam Forming Transceivers 用于5G ka波段波束形成收发器的有源矢量调制器的低噪声IQ生成

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174187

B. Mesgari, H. Zimmermann

{"title":"Low Noise IQ Generation Employed in an Active Vector Modulator for 5G Ka-Band Beam Forming Transceivers","authors":"B. Mesgari, H. Zimmermann","doi":"10.1109/CoBCom49975.2020.9174187","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174187","url":null,"abstract":"This paper investigates a compact, low noise differential in-phase (I) and quadrature signal (Q) generator. The proposed circuit utilizes a pair of mutual inductors to generate 90° phase shift which results in the same voltage gain for both I and Q paths. while it is in contrast with an RC-CR structure where the same gain for IQ paths cannot be achieved with a proper 90° phase shift simultaneously. The simulation results in a 130 nm SiGe-BiCMOS technology, indicate that a 3-dB bandwidth of 1.54 GHz around 28 GHz center frequency is achieved. Employing the proposed structure in a 1ow-IF receiver as part of the phase-shifting block has indicated a voltage gain of 30 dB for the desired signal while 40 dB rejection is provided at 22.275 GHz for the image signal. NF and S11 are less than 3.5 dB and -17dB, respectively, for the entire band of interest while the receiver consumes 8 mA from a 2V power supply. The phase error is less than 5° and the gain variation error is 0.3$sim$0.5 dB. The input IP3 for the rest of the receiver chain is about -27dBm.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"70 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":"130343750","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}

引用次数: 0

From OPS-SAT to PRETTY Mission: A Second Generation Software Defined Radio Transceiver for Passive Reflectometry 从OPS-SAT到PRETTY Mission:用于被动反射计的第二代软件定义无线电收发器

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174103

R. Zeif, A. Hörmer, M. Kubicka, Maximilian Henkel, O. Koudelka

{"title":"From OPS-SAT to PRETTY Mission: A Second Generation Software Defined Radio Transceiver for Passive Reflectometry","authors":"R. Zeif, A. Hörmer, M. Kubicka, Maximilian Henkel, O. Koudelka","doi":"10.1109/CoBCom49975.2020.9174103","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174103","url":null,"abstract":"After the successful launch of the ESA OPS-SAT Nanosatellite in December 2019, the Institute of Communication Networks at Graz University of Technology (TUG) has started its work on a new second-generation Software Defined Radio (SDR) transceiver platform for the ESA PRETTY mission. The mission goal of PRETTY is the demonstration of the passive reflectometry concept with an SDR on a 3U Nanosatellite. The PRETTY satellite requires a powerful second-generation SDR receiver that extends the functionality and performance of the first-generation SDR used for OPS-SAT. There are many lessons learned about the first-generation SDR characteristics, the performance, ease of use and the strengths but also the weaknesses of the design during the OPS-SAT environmental and functional testing campaign. The second-generation SDR design considers the experiences from the first-generation SDR and implements several improvements for the thermal behavior, mechanical sustainability, device control and status monitoring in order to achieve higher overall performance and reliability. The second-generation SDR uses an AD9361 radio frequency (RF) frontend chip, that allows the signal reception with two independent receive channels and signal transmission with two independent transmit channels. In particular, the new transmit functionality of the second-generation SDR is a remarkable improvement compared to the first-generation SDR for OPSSAT, due to its full-duplex, bidirectional communication capabilities. Further improvements provide the possibility, to extend the design with RF mixer boards, to achieve the flexibility required for future applications on higher RF bands.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"34 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":"130766488","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}

引用次数: 3

TinyI2C - A Protocol Stack for connecting Hardware Security Modules to IoT Devices TinyI2C—一种连接硬件安全模块到物联网设备的协议栈

2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom) Pub Date : 2020-07-01 DOI: 10.1109/CoBCom49975.2020.9174152

Thomas Fischer, Dominic Pirker, Christian H. Lesjak, C. Steger

{"title":"TinyI2C - A Protocol Stack for connecting Hardware Security Modules to IoT Devices","authors":"Thomas Fischer, Dominic Pirker, Christian H. Lesjak, C. Steger","doi":"10.1109/CoBCom49975.2020.9174152","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174152","url":null,"abstract":"To enhance the security of devices in the Internet of Things, devices are augmented with Hardware Security Modules (HSMs). To connect HSMs to their hosting devices, serial interfaces, e.g. I2C, are used. On top of these interfaces, a protocol stack is utilized to establish a reliable communication channel. HSM vendors, such as Microchip, NXP, and Infineon, use protocols that differ in regard of provided features, complexity, and efficiency. These protocols are either complex to implement, or lack certain features. In the first case, this leads to significant system integration effort, in the latter, the HSM’s reliability and interchangeability suffers.In this paper, we perform an evaluation of state-of-the-art solutions, GlobalPlatform APDU Transfer over I2C, Microchip cryptoauthlib, and the Infineon I2C Protocol Stack. Based on this evaluation, we propose TinyI2C, a lightweight communication protocol stack. It is designed to allow simple implementations, while providing equivalent core features as state-of-the-art solutions, including reliability and packet fragmentation. Major design goals were to create a symmetric protocol, where code can be shared between both peers, which is not the case in state-of-the-art solutions. In addition, we add features, such as packet streaming support, to make the protocol suitable for Remote-Procedure-Call (RPC) based frameworks. Finally, we show a proof-of-concept and evaluate the achieved performance.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"31 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":"132133516","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}

引用次数: 2