Wave Propagation in Urban Microcells: a Massively Parallel Approach Using the TLM Method

. We consider a new approach to modeling wave propagation in urban environments, based on the Transmission Line Matrix (TLM) method. Two-dimensional simulations are performed using a map of a city A renormalization technique is proposed to convert the results to the three-dimensional space. Our approach provides good predictions for the intensity of a wave when compared with in-situ measurements and is appropriate to very fast massively parallel computations. In order to provide a performance analysis, the algorithm has been used as a benchmark on different parallel architecture (CM200, CM5, IBM SP2 and Cray T3D). 1 Introduction The fast development and the growing importance of mobile, personal communication systems such as cellular phones require a detailed knowledge of wave propagation in heterogeneous media. Urban environments constitute a difficult problem which is studied by various authors[1, 2, 3]. Radio waves are absorbed, reflected, diffracted and scattered in a complicated ..