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DVB standards are affected by two major developments over the last years: the convergence to IP networks, and the increasing proliferation of mobile devices. This has led to the adoption of more efficient IP encapsulation protocols such as the Generic Stream Encapsulation (GSE) on one hand, and the specification of solutions targeted for mobile channels on the other hand. One such set of solutions...
Electricity consumption in the household has been steadily increasing during the last decades, becoming a major problem for utilities, customers, and the environment. Smart metering systems are not enough to reduce such consumption. The electric grid of the future - the Smart Grid - will need to go beyond the house meters, up to the individual appliances, in order to integrate that component with...
Recently, we have presented some studies concerning the analysis, design and optimization of one experimental device developed in the UK - GPTAD - which has been designed to remove blood clots without the need to make contact with the clot itself, thereby potentially reducing the risk of problems such as downstream embolisation. Based on the idea of a modification of the previous device, in this work,...
Measured ambient data in power system are known to exhibit noisy, nonstationarity fluctuations resulting primarily from small magnitude, random changes in load. Accounting for stochastic and time-varying features can provide a better description of the data and result in improved estimation algorithms. In this paper, a new hybrid algorithm combining a recursive least-square (RLS) algorithm and a Kalman...
Voltage dips analysis is a complex stochastic issue, since it involves a large variety of random factors, such as: type of short circuits in the power system, location of faults, protective system performance and atmospheric discharges. Among all categories of electrical disturbances, the voltage dips (sags) and momentary interruptions are the nemeses of the automated industrial process. On the other...
The increasing number of processing elements packed inside integrated circuits requires communication architectures such as a Networks-on-Chip (NoCs) to deal with scalability, bandwidth and energy consumption goals. Many different NoC architectures have been proposed, and several experiments reveal that routing and arbitration schemes are key design features for NoC performance. Therefore, this work...
On-Board Processing (OBP) technology has been already in the satellite scene for almost two decades. It has been a difficult path and for a long time considered an added but expensive value brought to the satellite payload. Today, it is a commercial and competitive reality. In the case of Thales Alenia Space (TAS), a new generation of OBP solutions are available to satisfy the always more demanding...
The current signalling framework for Digital Video Broadcasting (DVB) systems is based on MPEG-2 encoded Program Specific Information and System Information (PSI/SI) Tables that rely on the Transport Stream (TS). It is expected that in time, this architecture will be replaced by one based on the Generic Stream Encapsulation (GSE) protocol, paving the way for the convergence of DVB-S2 broadcast transmission...
Transporting information from one end to the other of the network is one of the most prominent services offered by telecommunication operators, what we term the "information transport" service. Its efficient management, considering aspects like tariffs or QoS (Quality of Service), attracts much interest and research efforts. The new "frontier" is to integrate this service in the...
This paper describes a novel healthcare IT platform developed under the LOBIN project, which allows monitoring several physiological parameters, such as ECG, heart rate, body temperature, etc., and tracking the location of a group of patients within hospital environments. The combination of e-textile and wireless sensor networks provides an efficient way to support noninvasive and pervasive services...
This paper presents a revision of the status of current standards dedicated to mobile services systems, using combined satellite and terrestrial components transmission. The objective is the analysis of a hybrid system compatible with DVB-SH and SDR technologies, taking as a basis the work and studies performed in MOVISAT project.
This paper presents the IPv6/IPv4 IPTV and Multiconference Unit trials performed within the frame of SATSIX, an EC funded IST FP6 project that deals with innovative techniques over transparent and meshed regenerative satellite networks.
Systems on Chip (SoCs) congregate multiple modules and advanced interconnection schemes, such as networks on chip (NoCs). One relevant problem in SoC design is module mapping onto a NoC targeting low energy. To date, few works are available on design and evaluation of mapping algorithms. The main goal of this work is to propose some algorithms and evaluate its results and performance with regard to...
The linear prediction coding of speech is based in the assumption that the generation model is autoregresive. In this paper we propose a structure to cope with the nonlinear effects presents in the generation of the speech signal. This structure will consist of two stages, the first one will be a classical linear prediction filter, and the second one will model the residual signal by means of two...
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