Farhan azmat ali (4 risultati)

Taschenbuch. Condizione: Neu. Investigation of Radio Channels under Trains | ISM Bands 434 MHz, 868 MHz and 2.4 GHz | Farhan Azmat Ali | Taschenbuch | Englisch | VDM Verlag Dr. Müller | EAN 9783639312232 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

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Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Ali Farhan Azmatis continuing his research work and PhD studies at University Gent, Belgium. His main area of interest is characterization of wireless links for power consumption and QoS. He has a M.Sc. degree from Hochschule OstWest.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Basic aim of work is to investigate the behavior of radio channels under the freight train. Measurements are performed in different environments; anechoic chamber, free field, car parking area and under the freight train and to see the influence of train metal environment on the channel characteristics. Three different ISM frequency bands; 434 MHz, 868 MHz and 2.4 GHz are used for the measurements to see which band is appropriate for the train environment.Transmitting and receiving antennas are separated at different distances in meters and power of the received signal is measured at the receiver side with spectrum analyzer. On the basis of these measurements, a path loss model is designed, for each frequency band measured, which provides the mathematical and graphical description of measurements. The investigation shows that 2.4 GHz Band gives better results than 434 MHz and 868 MHz for wireless communication system under trains.…