M.Sc. Tezi Görüntüleme

Student: Beril SELVİ
Supervisor: Asist. Prof. Dr. Haydar KAYA
Department: Elektrik-Elektronik Müh.
Institution: Graduate School of Natural and Applied Sciences
University: Karadeniz Technical University, Turkey
Title of the Thesis: Electric Field Measurements in the City Center of Trabzon and Comparison of Propagation Models with Measurement Results for Some Microcells
Level: M.Sc.
Acceptance Date: 27/4/2011
Number of Pages: 93
Registration Number: i2310

      The need for new cellular systems has been increasing dramatically in recent years with the increase in demand for cellular radio services. Operators are forced to increase the system capacity to meet the growing mobile subscriber traffic. Therefore, new micro cellular systems are designed with smaller dimensions to meet the increase in capacty and protect the quality.

In this study, for GSM 900 MHz, GSM 1800 MHz, UMTS 2 GHz, FM, VHF and UHF frequency bands, average electric field strength measurements have been taken in the city center of Trabzon in areas of dense settlement. The distances of the break point and the path loss values of four micro cell in the city center of Trabzon have been calculated with the help of the data obtained from measurements. The calculated values have been compared with the path loss prediction models proposed for micro cells. As a result of the comparison, the most appropriate model for the measurement region have been tried to determine. Graphical representations of the path loss curves were obtained using Matlab software.The average electric field strength values were shown on the maps using the Google Eart program.


Key Words: Electrik Field Strength, Micro Cell, Propagation Path Loss, Break Point, Fresnel Zone