A Fast and Enhanced Ray Optical Propagation Model for Indoor and Urban Scenarios, Based on an Intelligent Preprocessing of the Database

| Ray-optical propagation models are often used for the prediction of the field strength (and delay spread) in wireless mobile communication networks. But these models suffer from long computation times. For large areas in urban or indoor scenarios the computation times are in the range of hours which is too long for the planning of mobile radio networks. A new method for the acceleration of ray-optical models is presented in this paper. It is based on a preprocessing of the database and leads to acceleration factors near 1000, reducing the computation time to a few seconds on PCs. The propagation model is implemented for urban and indoor scenarios and very accurate results are obtained with the model.

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