R. Oliveira, J. Souza, F. Magno, K. Cozzolino, G. Cavalcante
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引用次数: 2
Abstract
In this paper the formalism of Parabolic Equations for narrow angles, a statistical method, the Moving Average and a empirical model, the Hata-Davidson, were used for to study on the quality of digital TV signal in the UHF band, and were compared with the measured in an heterogeneous environment, because it has areas with large buildings mixed with Amazonian vegetation. The implicit finite difference scheme of the Crank-Nicolson type was applied in order to get the solution of the Parabolic Equation. The propagation was considered in 15° in the direction paraxial. The results showed that the formalism of Parabolic Equations can be used to study the quality of digital TV signal. The average error was 1.62 dB and standard deviation 4.13 dB.
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