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RADIOPROPAGATION MEASUREMENTS AT 3.5 GHZ ON URBAN ENVIRONMENTS: : PATH LOSS A VARIABILITY

by RAMOS, GLAUCIO LOPES

Abstract (Summary)
Voice transport stills emerging in modern communication systems, going ahead from a specific located service to a more personal, with most of people having a mobile phone.Data transport is the development area that, through the Internet Protocol (IP), will allow a lot of opportunities on the business market. Data and the new applications that will emerge will be the key to new yields in wirelesscommunications. A lot of data transport services through IP are being developed, operating on a frequency band higher than the one used by the existent cellular mobile systems. Actually there are a lot of emerging FWA (Fixed Wireless Access) services in the 3.5 GHz band with support to IP.Then, the study of the behaviour of an electromagnetic signal in 3.5 GHz is a very important issue because new and important applications are emerging and being developed in this band. In order to carry out this task, a fixed to mobile link was assembled and a lot of experimental work was performed on two different sites of Rio de Janeirocity. The results presented in this work deal with path-loss measurements for coverage prediction and the study of received signal variability essential on system parameter determination. The results are compared with the mostpopular empirical and statistical models in the literature.The conclusion of this work suggest that new prediction models for path-loss determination and new distribution functions are needed mainly for systems parameters like level crossing rate (LCR) and average fading duration(AFD).
This document abstract is also available in Spanish and Portuguese.
Bibliographical Information:

Advisor:EDUARDO JAVIER ARANCIBIA VASQUEZ; GLAUCIO LIMA SIQUEIRA; LUIZ ALENCAR REIS S MELLO; GLAUCIO LIMA SIQUEIRA; JULIO CESAR RODRIGUES DAL BELLO

School:

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Source Type:Master's Thesis

Keywords:RADIOPROPAGACAO RADIOPROPAGATION PATH LOSS VARIABILITY

ISBN:

Date of Publication:03/22/2001

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