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Title: Análise dos modelos de previsão de cobertura na faixa de 3,5 GHz utilizados nos sistemas WiMAX
Other Titles: Analysis of prediction models cover the range of 3.5 GHz used in WiMAX systems
Keywords: Modelos de previsão de cobertura;  canal rádio móvel;  propagação;  medições;  cenários;  setores;  coverage predictions models;  mobile radio channel;  propagation;  measurements;  scenarios;  sectors
Issue Date: 30-Jun-2009
Abstract: The intensive search for improved means of broadband communication required the appearance of new technologies to attend the real needs of users. The new mobile communication devices demand high quality and fast access in the last mile. The development of new wireless networks technologies is based on the interoperation of the various existent communication systems with high rates transmission, seeking to integrate the new generation networks. This innovation led to the development of standards for broadband wireless access (BWA). In this context, the WiMAX is considered a solution to the last mile and is also used to support the infrastructure for backhaul and private enterprise applications. WiMAX integrates Wireless Local Area Networks (WLAN) with Wireless Metropolitan Area Network (WMAN). Developed by the IEEE, the 802.16 standard consolidates the concept of WMAN with high rates transmission for many users. The study of the environment s propagation and its features makes effective the planning of coverage for service users. The analysis of various factors such as operation frequency, modulation, analysis of mobile radio channel bandwidth, performance and the propagation models are key variables to estimate the quality of propagation in mobile communications systems. This work is concentrated in the analysis of the 3,5 GHz Prediction Models for WiMAX Systems.
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