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- W63583396 abstract "The first chapter is an introduction to the basic theory of wireless technology. Presents key characteristics such as range, propagation, interference and diffraction, frequencies and channels. Next, we represent the theory of antennas, network topology and application of the above in wireless metropolitan networks.In the second chapter there are presented the protocols of wireless networks and their application in zones 2,4 GHz and 5GHz and the comparison of these two zones. Below addressing network with the IP protocol and sharing the subnet 10.0.0.0 / 8 to B-class addresses for each county. Finally we represent the routing protocols and the advantages of using static or dynamic routing in wireless metropolitan area networks.The third chapter is exploring electromagnetic models covering open spaces. More specifically, we present the models Free space loss, Hata, Walfisch-Bertoni and Walfisch - Ikegami, and their parameters and how they are applied to calculate the loss in space propagation.In the fourth we try to apply the models of Chapter 3 in wireless metropolitan area networks in order to model them. We Perform measurements in wireless base stations in urban and suburban areas for the bands 2.4GHz and 5GHz. Followed by the calculation of the average error of the models of Chapter 3 points for measurement and control reliability so as to enable the application of models to 2.4GHz and 5GHz bands which do not belong to the range of frequencies that support the models. The purpose of this procedure is the finding of the optimal location of base stations before their installation and optimize the position of existing base stations." @default.
- W63583396 created "2016-06-24" @default.
- W63583396 creator A5019757013 @default.
- W63583396 date "2012-10-08" @default.
- W63583396 modified "2023-09-27" @default.
- W63583396 title "Διερεύνηση παραμέτρων σχεδίασης ασύρματου μητροπολιτικού δικτύου στις ζώνες 2.4GHz και 5GHz" @default.
- W63583396 hasPublicationYear "2012" @default.
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