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2021 International Balkan Conference on Communications and Networking (BalkanCom)最新文献

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TeraHertz Channel Model for Search and Rescue Nanonetwork Applications in Debris Areas 碎片区域搜索与救援纳米网络应用的太赫兹信道模型
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593234
Emre Sahin, O. Dagdeviren, M. Akkaş
Disasters such as earthquakes cause thousands of deaths every year. Since it is not possible to predict such disasters, research has generally focused on search and rescue operations in the debris area after these disasters. Due to the structures of the debris areas, where there are very tiny gaps between the wracks, the use of large-scale advanced devices is very limited in these operations. On the other hand, nanodevices that can easily pass through these gaps and scatter into the debris area can be used to gather information from under the wreckage. The computing complexities and transmission ranges of nanodevices differ according to their size and the amount of energy they have. In this study, TeraHertz (THz) channel models in debris areas of different densities were investigated for different types of nanodevices. Our contribution is a detailed analysis of channel properties using 0.1–0.35 THz for debris areas in terms of transmittance, absorption loss and path loss. Moreover, a novel research topic is suggested for nanonetwork applications generally associated with biomedical and agricultural studies.
像地震这样的灾难每年造成成千上万人死亡。由于无法预测此类灾害,研究一般集中在灾害发生后在残骸区域的搜救行动上。由于残骸区域的结构,残骸之间的间隙非常小,在这些操作中使用大型先进设备是非常有限的。另一方面,纳米设备可以很容易地穿过这些缝隙,分散到残骸区域,可以用来收集残骸下面的信息。纳米器件的计算复杂性和传输范围因其尺寸和能量而异。在这项研究中,研究了不同类型纳米器件在不同密度的碎片区域中的太赫兹通道模型。我们的贡献是使用0.1-0.35太赫兹对碎片区域的通道特性进行详细分析,包括透过率、吸收损耗和路径损耗。此外,本文还为纳米网络在生物医学和农业研究中的应用提出了新的研究课题。
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引用次数: 4
Fading Modeling in Indoor THz Wireless Systems 室内太赫兹无线系统的衰落建模
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593181
Evangelos N. Papasotiriou, Alexandros-Apostolos A. Boulogeorgos, A. Alexiou
This contribution aims at experimentally validating the suitability of well known fading distributions in modeling the channel of indoor THz wireless systems. In particular the suitability of α–μ, Rice and Nakagamim distributions is evaluated by fitting them to empirical channel measurements. The fitting performance is expressed in terms of the Kolmogorov-Smirnov (KS) and Kullback-Leibler (KL) divergence tests. The results show that the α–μ and Rice distributions achieve a good fit to the empirical data, wheras the Nakagami-m distribution fails to provide an adequate fit in the majority of the examined THz links.
这一贡献旨在通过实验验证众所周知的衰落分布在室内太赫兹无线系统信道建模中的适用性。特别是通过将α -μ、Rice和Nakagamim分布拟合到经验通道测量值来评估它们的适用性。拟合性能用Kolmogorov-Smirnov (KS)和Kullback-Leibler (KL)散度检验表示。结果表明,α -μ和Rice分布与经验数据拟合较好,而Nakagami-m分布在大多数太赫兹链路中不能提供足够的拟合。
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引用次数: 3
Feature Selection and Extraction in Sequence Labeling for Arrhythmia Detection 心律失常检测序列标记的特征选择与提取
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593247
Minxiang Ye, V. Stanković, L. Stanković, Srdjan Lulic, A. Anderla, S. Sladojevic
Automated Electrocardiogram (ECG)-based arrhythmia detection methods replace traditional, manual arrhythmia detection reducing the requirement for trained medical staff. Traditionally, ECG-based arrhythmia detection is performed via QRS complex detection followed by feature extraction, based on hand-crafted features, such as RR-intervals, Fast Fourier Transform-based features, wavelet analysis, higher order statistics and Hermite features. After the features are extracted, the ECG segments are classified into pre-defined categories. This study investigates the value of the feature extraction and selection methods for ECG-based arrhythmia detection. That is, with the emerging trend of deep learning methods which are capable of automatic feature extraction and selection, the research question addressed in this paper is if good classification performance can be obtained by feeding the raw ECG sequence directly into robust classifiers or handcrafted feature extraction/selection is necessary. Classification performance across a range of state-of-the-art classification methods indicates that feeding raw signals into the convolution neural network-based classifiers usually leads to the best performance but at the expense of high inference time.
基于自动心电图(ECG)的心律失常检测方法取代了传统的人工心律失常检测,减少了对训练有素的医务人员的需求。传统上,基于ecg的心律失常检测是通过QRS复杂检测进行的,然后是基于手工特征的特征提取,如rr区间、基于快速傅里叶变换的特征、小波分析、高阶统计量和埃尔米特特征。提取特征后,将心电段划分为预定义的类别。本研究探讨了基于心电图的心律失常检测的特征提取和选择方法的价值。也就是说,随着具有自动特征提取和选择能力的深度学习方法的兴起,本文研究的问题是将原始心电序列直接输入到鲁棒分类器中是否可以获得良好的分类性能,或者是否需要手工进行特征提取/选择。通过一系列最先进的分类方法的分类性能表明,将原始信号输入到基于卷积神经网络的分类器中通常会获得最佳性能,但代价是较高的推理时间。
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引用次数: 0
RF Backscatter-Based Sensors for Structural Health Monitoring 基于射频后向散射的结构健康监测传感器
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593263
M. Stanaćević, A. Ahmad, Xiao Sha, A. Athalye, S. Das, Kelly K. Caylor, B. Glisic, P. Djurić
There is a growing need for accurate and reliable assessment of conditions of a variety of engineering structures and for monitoring of their performance. Miniaturized, passive, backscatter-based RF sensors with embedded computational capabilities could enable advanced structural health monitoring at high fidelity and at large-scale. Specifically, these RF-powered devices, pervasively embedded and dispersed within the structural material, can sense parameters of interest throughout large volumes of instrumented structure, perform modest local computations to infer structural conditions, and communicate via backscatter modulation while consuming near-zero power. We demonstrate that the backscatter channel phase sensing enables quantification of a size of air gap between two RF sensors embedded in sand. Additionally, we demonstrate the sensitivity of the phase to the strain of the sand.
人们越来越需要对各种工程结构的状况进行准确可靠的评估,并对其性能进行监测。具有嵌入式计算能力的小型化、无源、基于反向散射的射频传感器可以实现高保真度和大规模的先进结构健康监测。具体来说,这些射频供电的设备普遍嵌入和分散在结构材料中,可以在大量仪器结构中感知感兴趣的参数,执行适度的局部计算来推断结构状况,并通过反向散射调制进行通信,同时消耗接近零的功率。我们证明了反向散射通道相位传感能够量化嵌入沙子中的两个射频传感器之间的气隙大小。此外,我们还证明了相对砂土应变的敏感性。
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引用次数: 2
Performance Evaluation of 6TiSCH Network with Multiple Physical Layers 多物理层6TiSCH网络性能评估
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593227
Milica Lekic, G. Gardasevic
The ever-growing interest in various applications of Wireless Sensor Networks (WSNs) in the Industrial Internet of Things (IIoT) scenarios imply the need for careful planning, design, and operational strategy. Intensified research activities are directed towards providing reliable and secure transmission technologies and protocols. This paper provides preliminary results of the experimental campaign in testing the performance of 6TiSCH (IPv6 over the TSCH mode of IEEE 802.15.4e) network while supporting multiple physical layers. For measurement purposes, the OpenMote-B hardware platform implementing the IEEE 802.15.4g and equipped with an Atmel AT86RF215 radio transceiver has been deployed.
无线传感器网络(wsn)在工业物联网(IIoT)场景中的各种应用日益增长的兴趣意味着需要仔细规划,设计和运营策略。加强研究活动的目的是提供可靠和安全的传输技术和协议。本文提供了在支持多个物理层的情况下测试6TiSCH (IEEE 802.15.4e的TSCH模式上的IPv6)网络性能的实验活动的初步结果。为了测量目的,部署了实现IEEE 802.15.4g并配备Atmel AT86RF215无线电收发器的OpenMote-B硬件平台。
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引用次数: 0
A Coverage Path Planning Algorithm for Self-Organizing Drone Swarms 一种自组织无人机群覆盖路径规划算法
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593145
K. Bezas, Georgios Tsoumanis, K. Oikonomou
Drone swarms are employed for multiple applications nowadays, such as early detection of forest fires, disaster response missions etc., area coverage being the main hurdle these applications face. In this work, an algorithm is proposed for drone swarms that achieves full area coverage and Point of Interest (PoI) detection with no decomposition for areas with simple polygon shapes and no obstacles. It employs small pieces of information that are exchanged among the swarm drones in real-time. Parallel lines and spiral coverage paths are examined in terms of the number of slowdowns in the swarms speed to fully collect information from a detected PoI, the scanned PoIs, and the formation switches that are executed when the swarm has to alter its flying direction. Simulations are developed for a square area shape. The results showcase that the parallel coverage path is more efficient in terms of cover time and travel distance compared to the spiral. The parallel coverage requires less slowdowns for the same percentage of scanned PoIs.
如今,无人机群被用于多种应用,例如森林火灾的早期检测,灾害响应任务等,区域覆盖是这些应用面临的主要障碍。在这项工作中,提出了一种算法,用于无人机群实现全区域覆盖和兴趣点(PoI)检测,而不分解具有简单多边形形状和无障碍物的区域。它利用在蜂群无人机之间实时交换的小块信息。平行线和螺旋覆盖路径根据蜂群速度减速的数量进行检查,以从检测到的PoI、扫描到的PoI以及当蜂群必须改变飞行方向时执行的编队切换中充分收集信息。对方形区域形状进行了仿真。结果表明,与螺旋覆盖路径相比,平行覆盖路径在覆盖时间和传播距离方面更有效。对于相同百分比的扫描点,并行覆盖需要更少的减速。
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引用次数: 3
Information Freshness in Random Access Channels for IoT Systems 物联网系统随机接入通道中的信息新鲜度
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593228
A. Munari, E. Uysal
This paper introduces and discusses some recent advances in the field of information freshness for Internet of things (IoT) applications. Focusing on a setup in which a large number of transmitters share a common wireless channel to deliver updates to a common receiver, we tackle in particular the role played by random access policies based on variations of the basic ALOHA protocol, employed in most practical IoT systems. The fundamental trade-offs that emerge are discussed together with the enhancement achieved by a number of novel schemes tailored to optimize age of information. The article aims to trigger discussion and further research on a relevant yet still largely unexplored field, and highlights some important issues and challenges that have yet to be addressed.
本文介绍和讨论了物联网应用中信息新鲜度领域的一些最新进展。专注于大量发射器共享公共无线通道以向公共接收器提供更新的设置,我们特别解决了基于基本ALOHA协议变体的随机访问策略所起的作用,该策略在大多数实际物联网系统中使用。本文讨论了出现的基本权衡,并讨论了为优化信息年龄而量身定制的许多新方案所实现的增强。本文旨在引发对一个相关但仍未被探索的领域的讨论和进一步研究,并突出了一些尚未解决的重要问题和挑战。
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引用次数: 2
Technical Program - at a glance 技术程序-一目了然
Pub Date : 2021-09-20 DOI: 10.1109/balkancom53780.2021.9593142
Repsol, Tomas Villamil
Wednesday 9/Oct. Thursday 10/Oct. Friday 11/Oct. 8.30 Registration open Registration open 9.00-9.20 Workshop Registration 09.20-09.40 09.40-10.00 10.00-10.20 10.20-10.40 10.40-11.00 Break Break/Exhibition/Posters Break/Posters 11.00-11.20 11.20-11.40 11.40-12.00 12.00-12.20 12.20-12.40 12.40-13.00 13.00-13.20 13.20-13.40 13.40-14.00 14.00-14.20 14.20-14.40 14.40-15.00 15.00-15.20 15.20-15.40 15.40-16.00 Break/Exhibition/Posters 16.00-16.20 16.20-16.40 Break/Exhibition/Posters 16.40-17.00 17.00-17.20 17.20-17.40 17.40-18.00 18.00-18.30 18.00-19.00 19.00-20.00 20.00-21.00
周三9 / 10月。周四10月10 /。周五11 / 10月。8.30报名开始报名时间9.00-9.20工作坊报名时间09.20-09.40 09.40-10.00 10.00-10.20 10.20-10.40 10.40-11.00休息时间/展览/海报休息时间/海报休息时间11.00-11.20 11.20-11.40 12.40-13.00 11.20- 12.00 12.00-12.20 12.20-12.40 12.40-13.00 13.00-13.20 13.20 13.40 13.40-14.00 14.00-14.20 14.20-14.40 14.40- 16.00 16.20-16.40休息时间/展览/海报16.40-17.00 17.00-17.20 17.20-17.40 17.40-18.00 18.00-18.3018.00-19.00 19.00-20.00 20.00-21.00
{"title":"Technical Program - at a glance","authors":"Repsol, Tomas Villamil","doi":"10.1109/balkancom53780.2021.9593142","DOIUrl":"https://doi.org/10.1109/balkancom53780.2021.9593142","url":null,"abstract":"Wednesday 9/Oct. Thursday 10/Oct. Friday 11/Oct. 8.30 Registration open Registration open 9.00-9.20 Workshop Registration 09.20-09.40 09.40-10.00 10.00-10.20 10.20-10.40 10.40-11.00 Break Break/Exhibition/Posters Break/Posters 11.00-11.20 11.20-11.40 11.40-12.00 12.00-12.20 12.20-12.40 12.40-13.00 13.00-13.20 13.20-13.40 13.40-14.00 14.00-14.20 14.20-14.40 14.40-15.00 15.00-15.20 15.20-15.40 15.40-16.00 Break/Exhibition/Posters 16.00-16.20 16.20-16.40 Break/Exhibition/Posters 16.40-17.00 17.00-17.20 17.20-17.40 17.40-18.00 18.00-18.30 18.00-19.00 19.00-20.00 20.00-21.00","PeriodicalId":115090,"journal":{"name":"2021 International Balkan Conference on Communications and Networking (BalkanCom)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115989597","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
Characterization of Terahertz Band Transmittance from Sea-Level to Drone Altitudes 从海平面到无人机高度的太赫兹波段透射率表征
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593244
A. Saeed, Ammar Saleem, O. Gurbuz, M. Akkaş
Terahertz (THz) communications has been recognized as a candidate technology for the next generation networks as the THz band offers large bandwidth and data rates, catering for the problem of spectrum scarcity. However, THz band propagation is highly affected by atmospheric absorption due to water vapor molecules, in addition to the high spread loss. Modeling of the absorption loss is essential for a realistic closed form THz path loss model, which can be employed in link level analysis and formulations. For this purpose, in this paper, we characterize the THz transmittance i.e., absorption gain using the data obtained from Line-by-Line Radiative Transfer Model (LBLRTM) tool, considering the available frequency channels selected via water-filling, altitudes from sea-level to drone altitudes and various transmission ranges. We analyze the modeling of transmittance as a function of: (1) Frequency, (2) Distance and (3) Altitude, using different statistical models including, Polynomial, Exponential and Gaussian models. Numerical results depict that modeling transmittance as a function of distance and altitude are feasible approaches using the exponential and the polynomial models, respectively. This work can be extended to characterize the transmittance for all frequencies over the entire THz band, and also for higher altitudes and longer ranges.
太赫兹(THz)通信被认为是下一代网络的候选技术,因为太赫兹频段提供了大带宽和数据速率,解决了频谱稀缺的问题。然而,由于水蒸气分子的存在,太赫兹波段的传播受大气吸收的影响很大,而且传播损失也很大。对吸收损耗的建模对于建立一个真实的封闭太赫兹路径损耗模型至关重要,该模型可用于链路级分析和计算。为此,在本文中,我们利用逐行辐射传输模型(LBLRTM)工具获得的数据,考虑通过充水选择的可用频率通道、从海平面到无人机高度的高度以及各种传输范围,表征太赫兹透射率,即吸收增益。本文采用多项式模型、指数模型和高斯模型等不同的统计模型,分析了透光率与(1)频率、(2)距离和(3)海拔的关系。数值结果表明,利用指数模型和多项式模型分别将透光率建模为距离和海拔的函数是可行的方法。这项工作可以扩展到表征整个太赫兹波段上所有频率的透射率,也可以用于更高的高度和更长的范围。
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引用次数: 3
MARVEL: Multimodal Extreme Scale Data Analytics for Smart Cities Environments MARVEL:面向智慧城市环境的多模式极端规模数据分析
Pub Date : 2021-09-20 DOI: 10.1109/BalkanCom53780.2021.9593258
D. Bajović, Arian Bakhtiarnia, G. Bravos, A. Brutti, Felix Burkhardt, Daniel Cauchi, A. Chazapis, Claire Cianco, Nicola Dall’Asen, V. Delić, Christos Dimou, Djordje Djokic, Antonio Escobar-Molero, L. Esterle, F. Eyben, Elisabetta Farella, T. Festi, A. Geromitsos, Giannis Giakoumakis, George Hatzivasilis, S. Ioannidis, Alexandros Iosifidis, T. Kallipolitou, Grigorios Kalogiannis, Akrivi Kiousi, D. Kopanaki, M. Marazakis, Stella Markopoulou, A. Muscat, F. Paissan, T. Lobo, D. Pavlović, Theofanis P. Raptis, E. Ricci, Borja Saez, Farhan Sahito, K. Scerri, Björn Schuller, Nikola Simić, G. Spanoudakis, Alex Tomasi, Andreas Triantafyllopoulos, L. Valerio, Javier Villazán, Yiming Wang, A. Xuereb, J. Zammit
A Smart City based on data acquisition, handling and intelligent analysis requires efficient design and implementation of the respective AI technologies and the underlying infrastructure for seamlessly analyzing the large amounts of data in real-time. The EU project MARVEL will research solutions that can improve the integration of multiple data sources in a Smart City environment for harnessing the advantages rooted in multimodal perception of the surrounding environment.
基于数据采集、处理和智能分析的智慧城市需要高效设计和实施各自的人工智能技术和底层基础设施,以便实时无缝分析大量数据。欧盟的MARVEL项目将研究解决方案,以改善智慧城市环境中多个数据源的集成,从而利用植根于对周围环境的多模式感知的优势。
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引用次数: 12
期刊
2021 International Balkan Conference on Communications and Networking (BalkanCom)
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