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The Air Traffic Control (ATC) systems are critical due the amount of information that they have to process in real time. These systems combined different kind of information, like primary and secondary radar information and flight planning information. Depending the extent of a country different RADAR are installed trying to cover most of the country area. This could become a problem, because different...
Applications in distributed systems, have increased their complexity and demands of new requirements, since the TCP/IP design, e.g. requirements for mobility, security, QoS and throughput. The access technologies also have a history of continuous development, with the increase of its capacity and new transmission medium. This evolution in applications and new access technologies have not been followed...
The ontology is used in different areas of computer systems for the explicit representation of conceptualizations, but there are few studies on the application of ontology in the intermediate and lower layers of computer networks. This paper extend the studies on ontology for the network and transport layers of the TCP/IP architecture, to address the human needs that demands technological requirements...
This paper presents a design of a transmitter pulse generator UWB-Ultra Wide Band in standard 180 nm MOSIS/CMOS technology. We proposed a pulse generator using Phase-Frequency Detector (PFD) that is designed using a modified architecture TSPC (True Single-phase Clock) positive edge triggered D Latch. The operation range and power consumption PFD is 45 ??W to 2 mW, from 200 MHz to 5 GHz, respectively,...
Since the Federal Commission of Communication of the U.S.A. (FCC) has made available the ample spectrum in the band of 3.1 up to 10.6 GHz for Ultrawideband (UWB) technology for transmission of wireless data, many efforts in research and development has been made for the drawing and manufacture of UWB antennas. These types of antennas are used in a great variety of applications. As, for example, high...
This paper presents the proposal of integrating an Automatic Meter Reading System (AMR) with Computer Vision and Wireless Communication. The AMR system reads the numeral meter through a video micro-camera, process the collected image using an Optical Character Recognition (OCR) module embedded in the sensor node. The results are sent through ZigBee wireless links to the center of management, in which...
The coordinated sharing of resources to address computational problems is a central issue in environments of Grid computing. Two important scenarios arise from this issue. First, as the amount of installed applications increases, the difficulty of finding an explicitly desired application for reuse also grows. Simultaneously, the possibilities of suitable replacement of software pieces in response...
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