Abstract
In this study, propagation prediction models based on ray tracing in coverage estimation for broadcasting systems are compared with respect to computation time and accuracy in the case of close building heights. Uniform Theory of Diffraction (UTD), Slope Diffraction (S-UTD) and Slope UTD with Convex Hull (S-UTD-CH) models are compared for computation time and propagation path loss. Moreover in this study, effects of transmitter height to relative path loss at the receiver are analyzed. Furthermore, contribution of S-UTD-CH model to UTD model increases in the transition zone. As a conclusion, S-UTD-CH model is optimum model with respect to computation time and relative path loss in transition zone.
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