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

Analytic-numeric considerations for contactless reader modulation 非接触读写器调制的解析-数值考虑

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-09-03 DOI: 10.1109/ConTEL.2015.7231207

M. Gebhart

引用次数: 0

Investigation of moderate-to-strong turbulence effects on free space optics — A laboratory demonstration 中强湍流对自由空间光学影响的研究-实验室演示

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231197

N. A. M. Nor, Elizabeth Fabiyi, M. M. Abadi, Xuan Tang, Zabih Ghassemlooy, A. Burton

{"title":"Investigation of moderate-to-strong turbulence effects on free space optics — A laboratory demonstration","authors":"N. A. M. Nor, Elizabeth Fabiyi, M. M. Abadi, Xuan Tang, Zabih Ghassemlooy, A. Burton","doi":"10.1109/ConTEL.2015.7231197","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231197","url":null,"abstract":"The increasing demand for higher bandwidth is the motivation behind research studies in free space optical (FSO) communications. In particular, the impact of the atmospheric channel on the FSO link performance has been investigated for decades. Among known channel effects, turbulence is the one, which is thoroughly studied from theoretical and experimental point of views. However, due to limitation of laboratory equipment and channel length, only experimental works in the weak turbulence regime are reported. Therefore, in this paper a dedicated indoor controlled laboratory chamber is used to simulate the outdoor FSO communications for moderate-to-strong turbulence regimes. Instead of increasing the link distance, we generate high temperature gradients along the propagation path of 7 m by blowing cold air in a parallel direction to the laser beam. The performances of the on off keying intensity modulated FSO link is assessed by means of the Q-factor and the optical intensity distribution plots of received signals, thus giving an insight into the level of scintillation achieved in moderate to strong turbulence regimes.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"1 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":"117234221","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: 17

Life cycle based analysis of ICT equipment for advanced metering infrastructure 基于生命周期的先进计量基础设施ICT设备分析

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231222

S. Aleksic, Vedad Mujan

引用次数: 3

Session level network usage patterns of mobile handsets 手机的会话级网络使用模式

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231229

Tapio Soikkeli, Antti Riikonen

引用次数: 2

Energy consumption model for devices in machine-to-machine system 机器对机器系统中设备的能耗模型

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231224

Pavle Skocir, Stjepko Zrncic, Damjan Katusic, M. Kusek, G. Jezic

引用次数: 6

Hardware-software partitioning of soft multi-core cyber-physical systems 软多核网络物理系统的软硬件划分

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231221

Benjámin Babják, P. Völgyesi, Á. Lédeczi

引用次数: 0

Full-duplex bidirectional communication under self-interference 自干扰下全双工双向通信

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231219

Kudret Akcapinar, Ö. Gürbüz

{"title":"Full-duplex bidirectional communication under self-interference","authors":"Kudret Akcapinar, Ö. Gürbüz","doi":"10.1109/ConTEL.2015.7231219","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231219","url":null,"abstract":"In this paper, we analyze bidirectional communication between two multiple antenna nodes performing half-duplex and full-duplex transmissions. We compare the performance of half-duplex and full-duplex modes in terms of achievable sum rate under finite Signal to Noise Ratio (SNR), while utilizing a realistic, experimentally characterized residual self-interference (SI) model for full-duplex operation. In our comparisons, for considering different perspectives for radio resource exploitation, we evaluate the antenna conserved and RF chain conserved full-duplex implementations, while investigating the effect of the number of antennas, different SI cancellation levels and transmission power. Our results indicate that antenna conserved full-duplex is only slightly better than half-duplex transmission, even when SI is completely canceled. RF chain conserved full-duplex, on the other hand, can double the half-duplex performance when SI is perfectly canceled, and still significantly higher capacity over half-duplex is achieved by realistic SI cancellation. Specifically, the capacity gain of RF chain conserved full-duplex over half-duplex is highly dependent on the transmission power levels, but not dependent at all on the number of antennas. Lastly, it is also deduced that individual transmission power of nodes is also important in determining the sum rate, especially for full-duplex implementations with poor SI cancellation.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"397 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":"122862645","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: 15

Vectored VDSL2: Theoretical possibilities on quad cables 矢量VDSL2:四根电缆的理论可能性

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231220

V. Mikac, Ž. Ilić, Goran Jurin, Velimir Svedek

引用次数: 0

Performance analysis of CDMA-based networks with interference cancellation, for batched Poisson traffic under the bandwidth reservation policy 带宽保留策略下带干扰消除的cdma网络的性能分析

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231218

I. Moscholios, V. Vassilakis, G. Kallos, M. Logothetis

{"title":"Performance analysis of CDMA-based networks with interference cancellation, for batched Poisson traffic under the bandwidth reservation policy","authors":"I. Moscholios, V. Vassilakis, G. Kallos, M. Logothetis","doi":"10.1109/ConTEL.2015.7231218","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231218","url":null,"abstract":"CDMA-based technologies deserve assiduous analysis and evaluation. We study the performance, at call-level, of a CDMA cell with interference cancellation capabilities, while assuming that the cell accommodates different service-classes of batched Poisson arriving calls. The partial batch blocking discipline is applied for Call Admission Control (CAC). To guarantee certain Quality of Service (QoS) for each service-class, the Bandwidth Reservation (BR) policy is incorporated in the CAC; i.e., a fraction of system resources is reserved for highspeed service-classes. We propose a new multirate loss model for the calculation of time and call congestion probabilities. The notion of local (soft) and hard blocking, users activity, interference cancellation, as well as the BR policy, are incorporated in the model. Although the steady state probabilities of the system do not have a product form solution, time and call congestion probabilities can be efficiently determined via approximate but recursive formulas. Simulation verified the high accuracy of the new formulas. We also show the consistency of the proposed model in respect of its parameters, while comparison of the proposed model with that of Poisson input shows its necessity.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"241 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":"115658637","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

Experimental results for a proposal of adaptative mechanism based on SNRs variation in infrastructured wireless networks 一种基于基础无线网络信噪比变化的自适应机制的实验结果

2015 13th International Conference on Telecommunications (ConTEL) Pub Date : 2015-07-13 DOI: 10.1109/ConTEL.2015.7231189

Kerlla S. Luz, P. Solís, Mylène C. Q. Farias, H. D. Garcia

引用次数: 0