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The ConTEL 2017 aims to reflect on current and emerging networking technologies that enable ubiquitous Internet and communications as key drivers of connected information society. With new services and increasing demand, there is a growing need for improvement in networking infrastructure - not just in terms of quality and performance, but also in scalability, mobility, energy efficiency, and multiple...
Radio access technologies for mobile broadband have evolved effectively to provide connectivity to billions of subscribers and things. Current Radio Access Network architecture is undergoing a transformation to increase deployment flexibility and network dynamicity, so that networks will be able to meet the performance requirements demanded by applications such as extreme mobile broadband and long-range...
All areas of our information society depend on communication networks as a basic infrastructure. Emerging applications raise the need for dynamic changes of the required networking resources, for example, to react to social events or to shifts of demands over time. Providing the required flexibility to react to those changes and being cost efficient at the same time has recently become a huge challenge...
Until recently, structured (e.g., relational) and unstructured (e.g., textual) data were managed very differently: Structured data was queried declaratively using languages such as SQL, while unstructured data was searched using boolean queries over inverted indices. Today, we witness the rapid emergence of Big Data Integration techniques leveraging knowledge graphs to bridge the gap between different...
The lack of models to aid the technical debt estimation and monitoring in cloud architectures motivates the need to develop a technical debt management (TDM) theory and practical approach for effective management decision making. The cloud is a marketplace in which services and resources are leased off based on the volume of data and the number of cloud-oriented users, which affect the accuracy of...
Nowadays more than a billion people with various disabilities face barriers in inclusion. ICT-based assistive solutions are high-tech approach for overcoming those barriers. While ICT devices become more and more available and affordable, as well as ICT-based assistive solution more and more numerous, the systematic solution which would enable people with disabilities to search for appropriate ICT-based...
Ultra-wide band (UWB) radar is a very perspective technology for short-range localization and tracking of moving persons. UWB radar sensor network (UWB-SN) employing the centralized data fusion method can significantly improve tracking capabilities of more people in complex building environments. In this paper we present real-time performing wireless UWB-SN hardware demonstrator. Its sensor nodes...
Visible light communication (VLC) is an emerging technology for public street lighting. The paper comprises two parts. A spatial scaled simulation model for Signal to Noise Ratio (SNR) analysis and a spatial scaled experiment are elaborated to evaluate the VLC propagation channel model in an inhomogeneous street lighting channel. As a first result, a minor improved non Line of Sight (NLoS) ceiling...
A novel approach for testing Free Space Optical (FSO) systems in a controlled laboratory condition is proposed. Based on fibre optics technology, our testbed could effectively emulate the operation of real wireless optical communication systems combined with various atmospheric perturbation effects such as fog and clouds. The suggested architecture applies an optical variable attenuator as a main...
It is widely argued that optical transmission and switching technologies will play an important role in next generation data centers. However, even though optical technologies have made a lot of progress in the last years towards achieving very high transmission capacity as well as increased flexibility and efficiency, an additional effort needs to be put in determining and analyzing suitable architectures...
In interactive satellite communication systems, adaptive coding and modulation is a suitable countermeasure to mitigate the high fade dynamics of frequency ranges like the Ka-band. Consequently, receivers that support operation at low and very low SNR are required. In this paper, we present such a receiver structure dedicated for burst reception in a MF-TDMA system, as it is typically adopted in the...
One of the orthogonal frequency division multiplexing (OFDM) schemes is the Time Domain Synchronous OFDM (TDS-OFDM) scheme, in which, the guard intervals between consecutive OFDM symbols contain Pseudo Noise (PN) sequences which are known to the receiver and are used for channel estimation and synchronization. In this paper, a joint channel estimation algorithm is proposed for TDS-OFDM scheme, the...
This work introduces a novel Behavioral Informatics Reporting Framework (BIIRF) which has been developed in the effort to review, study and compare the increasing number of Behavioral Informatics (BI) interventions for Connected Health (CH). The framework was developed through an iterative design cycle and it comprises of (i) a short-list of BI Intervention Eligibility Criteria for candidate interventions,...
Urinary incontinence is uncontrolled leakage of urine. Its incidence is increasing and its treatment is expensive, however often not efficient. The paper reviews existing findings of genetic effects, effects of environment and lifestyle on occurrence of urinary incontinence. The development of personalized medicine assisted by information and communication technology is of great importance for the...
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