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The overall performance of a WLAN 802.11e is determined, among other things, by the Enhanced Distributed Channel Access (EDCA) parameters, typically configured with default and static values. The same does not vary according to the dynamic requirements of Quality of Service (QoS) of the network. To achieve significant improvements in the performance of the(More)
With the continuing development of the wireless technologies (Wi-Fi, 3G, 4G, WiMax and Bluethooth), the study of wireless multimedia transmissions has gained lately more attention. For example, the expectations of the company leaders on the growth of Wi-Fi video traffic has updated the lines of research on the standard IEEE 802.11e introduced to provide QoS(More)
In recent years there has been an exponential increase in the growth in multimedia applications, and in particular in video applications. Understanding the behavior of the video traffic and the requirements for the network helps network administrators to improve the traffic. In this work, a quantitative analysis is performed by experimentation, in order to(More)
Open architecture ATE is a multi-site, reconfigurable, modularized test system that supports third party modules in a plug-and-play manner. When high-speed analog/mixed-signal modules are used with digital module from different vendors, synchronization of these modules present unique engineering challenges. In this paper we describe a synchronization method(More)
This paper presents an adaptive power system stabilizer (PSS) that together with the automatic voltage regulator (AVR) improves terminal voltage control under different perturbations of the synchronous machine. To validate the proposed methodology, a test system is implemented in laboratory. The performance obtained using the proposed adaptive methodology(More)
A massive amount of conditional independence tests on data must be performed in the problem of learning the structure of probabilistic graphical models when using the independence-based approach. An intermediate step in the computation of independence tests is the construction of contingency tables from the data. In this work we present an intelligent cache(More)
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