发布求助
文献互助 智能选刊 最新文献

2015 13th International Conference on Telecommunications (ConTEL)最新文献

筛选
英文 中文
Estimating real world privacy risk scenarios 评估真实世界的隐私风险场景
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231214
M. Vuković, Pavle Skocir, Damjan Katusic, D. Jevtić, Daniela Trutin, Luka Delonga
{"title":"Estimating real world privacy risk scenarios","authors":"M. Vuković, Pavle Skocir, Damjan Katusic, D. Jevtić, Daniela Trutin, Luka Delonga","doi":"10.1109/ConTEL.2015.7231214","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231214","url":null,"abstract":"User privacy is becoming an issue on the Internet due to common data breaches and various security threats. Services tend to require private user data in order to provide more personalized content and users are typically unaware of potential risks to their privacy. This paper continues our work on the proposed user privacy risk calculator based on a feedforward neural network. Along with risk estimation, we provide the users with real world example scenarios that depict privacy threats according to selected input parameters. In this paper, we present a model for selecting the most probable real world scenario, presented as a comic, and thus avoid overwhelming the user with lots of information that he/she may find confusing. Most probable scenario estimations are performed by artificial neural network that is trained with real world scenarios and estimated probabilities from real world occurrences. Additionally, we group real world scenarios into categories that are presented to the user as further reading regarding privacy risks.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132922132","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
Channel estimation and iterative equalization for long-haul coherent optical OFDM communication systems 长途相干光OFDM通信系统的信道估计与迭代均衡
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231185
M. Shoreh, Reza Ghanaatian, J. Salehi
{"title":"Channel estimation and iterative equalization for long-haul coherent optical OFDM communication systems","authors":"M. Shoreh, Reza Ghanaatian, J. Salehi","doi":"10.1109/ConTEL.2015.7231185","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231185","url":null,"abstract":"In this paper, we propose an iterative block equalizer for long-haul Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) communication systems. The proposed scheme is based on a soft Minimum Mean-Squared Error (MMSE) iterative block equalizer. Two different channel estimation methods are also discussed. The performance and computational complexity of the proposed iterative equalization and channel estimation techniques are evaluated as well. The obtained Bit Error Rate (BER) performance reveal that the iterative equalizer outperforms the linear equalizers by almost two orders of magnitude.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115792955","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
Delay profiles for indoor diffused visible light communication 室内漫射可见光通信的延迟分布
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231193
S. Sheikh Muhammad
{"title":"Delay profiles for indoor diffused visible light communication","authors":"S. Sheikh Muhammad","doi":"10.1109/ConTEL.2015.7231193","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231193","url":null,"abstract":"This paper targets the computation and analysis of time dispersion characteristics and power delay profile of visible light communication (VLC) channel for an indoor diffused environment. A generalized conventional ray tracing model has been adapted through parametrization of the wavelength dependence of white LED characteristics as well as the spectral reflectance of selected indoor reflectors. The power delay profile and the rms delay spread for the VLC system have been evaluated. Two different transmitter topologies have been proposed to compare the time dispersion characteristics of the VLC system. It has been demonstrated by simulation results that the axis-excited configuration exhibits lesser rms delay spread as compared to the corner-excited configuration and improves the system data rate by more than 5 Mbps.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121305536","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: 7
Multi-criteria decision for small cell switch off in ultra-dense LTE networks 超密集LTE网络中小基站关闭的多准则决策
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231191
A. Dudnikova, P. Dini, L. Giupponi, D. Panno
{"title":"Multi-criteria decision for small cell switch off in ultra-dense LTE networks","authors":"A. Dudnikova, P. Dini, L. Giupponi, D. Panno","doi":"10.1109/ConTEL.2015.7231191","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231191","url":null,"abstract":"The concept of a densely deployed heterogeneous network is one of the main approaches of modern wireless networking research to satisfy the growth of the traffic demand. However, such trend leads to a significant network energy consumption increment. One of the effective techniques to save energy is to switch off some underutilized cells during off peak hours. In this line, the focus of this paper is to decide the number of base stations to switch off in order to maximize the energy saving, while maintaining coverage, capacity and Quality of Service. We use a combination of Grey Relational Analysis and Analytic Hierarchy Process tools to trigger the switch off actions, jointly considering multiple decision inputs for each cell. The co-tier interference, typical of small cell networks, is also considered in the decision making by introducing a graph - based technique for dynamic resource allocation.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122070990","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: 10
Link budget optimization of free space optical systems in relation to the beam diverging angle 自由空间光学系统与光束发散角相关的链路预算优化
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231195
H. Ivanov, E. Leitgeb, T. Plank, P. Bekhrad, Tsvetan Mitsev
{"title":"Link budget optimization of free space optical systems in relation to the beam diverging angle","authors":"H. Ivanov, E. Leitgeb, T. Plank, P. Bekhrad, Tsvetan Mitsev","doi":"10.1109/ConTEL.2015.7231195","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231195","url":null,"abstract":"The performance of a Free Space Optical (FSO) communication system is highly dependent on the precise selection and adjustment of its operation parameters. The appropriate determination of the angle of divergence can noticeably compensate the negative impact of deviations of the optical beam from its main direction caused by a variety of deteriorative influences. Mathematical equations for calculating the optimum diverging angle are derived within this work. Regarding the obtained results, the link budget and the link margin of FSO systems are calculated. In addition, the dependence of the optimum divergence on the power and the wavelength of the optical source is investigated. In relation to this, enough figures showing evidently the better reliability of a FSO system in condition of beam wandering as well as other degradative impacts are attached.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116629454","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: 6
An adaptive large neighbourhood search for designing transparent optical core network 透明光核心网设计中的自适应大邻域搜索
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231187
D. Mehta, B. O’Sullivan, Cemalettin Ozturk, L. Quesada
{"title":"An adaptive large neighbourhood search for designing transparent optical core network","authors":"D. Mehta, B. O’Sullivan, Cemalettin Ozturk, L. Quesada","doi":"10.1109/ConTEL.2015.7231187","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231187","url":null,"abstract":"In this paper, we focus on designing a core optical network. Given a set of Metro-Core (MC) nodes, the problem is to select a set of links such that the maximum distance between any pair of nodes is bounded. The primary objective is to minimise the total length of the links followed by a secondary objective which is to minimise the total length of the paths between the pairs of MC nodes. We present a mixed integer programming (MIP) model for this problem. As the size of the instances of this problem increases, the MIP model does not scale in terms of memory and time. We therefore present an adaptive large neighbourhood search (LNS) algorithm where the idea is to find an initial solution and repeatedly improve it by solving relatively small subproblems. We propose two different ways of selecting subproblems. The experiments are performed using 3 real-world network topologies: Ireland, UK and Italy. Our results demonstrate that the developed approach is suitable for solving large networks and it can compute very high quality solutions which are very close to optimal values.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114756438","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
IB-DFE based equalizer for constant envelop OFDM systems 基于IB-DFE的恒包络OFDM系统均衡器
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231217
R. Magueta, Adão Silva, R. Dinis, A. Gameiro
{"title":"IB-DFE based equalizer for constant envelop OFDM systems","authors":"R. Magueta, Adão Silva, R. Dinis, A. Gameiro","doi":"10.1109/ConTEL.2015.7231217","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231217","url":null,"abstract":"Constant envelope OFDM (CE-OFDM) is a promising modulation technique for future millimeter wave (mmW) based wireless communications, since it allows low-cost and highly efficient power amplification based on strongly nonlinear amplifiers. The aim of this paper is to design a new iterative space-frequency equalizer, based on iterative block decision feedback equalization (IB-DFE) principle, for multiplexing MIMO CE-OFDM based systems. The equalizer is designed to take into account both inter-block and residual inter-carrier interferences by efficiently exploit the space-frequency diversity order inherent to these systems. The matrices for this iterative space-frequency equalizer are obtained by minimizing the overall mean square error (MSE) of all data streams at each subcarrier. Our iterative scheme significantly outperforms the linear frequency domain equalizers, recently considered for CE-OFDM, with only a few iterations.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124912293","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
Prototype-driven software development process for augmentative and alternative communication applications 用于增强和替代通信应用的原型驱动软件开发过程
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231204
Jurica Babic, Iva Slivar, Z. Car, V. Podobnik
{"title":"Prototype-driven software development process for augmentative and alternative communication applications","authors":"Jurica Babic, Iva Slivar, Z. Car, V. Podobnik","doi":"10.1109/ConTEL.2015.7231204","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231204","url":null,"abstract":"The paper presents software development model for implementation of communication and education applications based on Augmentative and Alternative Communication (AAC). Target user group of these applications are people with disabilities, specifically people with complex communication needs. Development process of such applications should follow specific principles to successfully implement all functional and accessible features that applications should contain in order to be accessible and highly usable. Furthermore, development process should be enriched with specific methodologies and approaches in its particular phases in order to fully exploit a necessary synergy of multidisciplinary team consisting of experts from information and communication technology, rehabilitation and education, psychology and graphic design. The presented model was defined during extensive developmental activities over two years period and evaluated on the number of publicly available case-study web and mobile AAC applications.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127945214","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: 8
Modeling the nonlinearity of polarizing beam splitters in nano-displacement measurement of laser encoder using Jones matrix analysis 利用琼斯矩阵分析对激光编码器纳米位移测量中偏振分束器的非线性进行建模
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231188
S. Olyaee, Abdollah Gorgani Firoozjah
{"title":"Modeling the nonlinearity of polarizing beam splitters in nano-displacement measurement of laser encoder using Jones matrix analysis","authors":"S. Olyaee, Abdollah Gorgani Firoozjah","doi":"10.1109/ConTEL.2015.7231188","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231188","url":null,"abstract":"In this paper, nonlinearity error of a laser encoder is modeled by using the Jones matrix analysis. In the nano-metrology system we suppose that polarizing beam splitters are imperfect. The intensity of interference signals on photodetectors are obtained and simulated by MATLAB software. The nano-displacement of scale grating is simulated by Arctangent method. We show that maximum nonlinearity error phase is equal to 0.07166 rad when the pitch of scale grating and wavelength of the laser are 1 μm and 685 nm, respectively.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129706641","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: 5
OOCWC: The robocar world championship initiative OOCWC:机器人赛车世界锦标赛的倡议
2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231223
Norbert Bátfai, Renátó Besenczi, Andras Mamenyak, M. Ispány
{"title":"OOCWC: The robocar world championship initiative","authors":"Norbert Bátfai, Renátó Besenczi, Andras Mamenyak, M. Ispány","doi":"10.1109/ConTEL.2015.7231223","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231223","url":null,"abstract":"Robocar World Championship or briefly OOCWC is a new initiative to create a community of people who share their interest in investigating the relationship between smart cities and robot cars with particular attention to the spread of robot cars in the near future. At the heart of this initiative is the Robocar City Emulator. It is intended to offer a common research platform for the investigation of the smart city simulations. In this paper, we review the recent advances of OOCWC.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130561707","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: 6
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书