SIP simulation of UHF propagation in urban microcells

A propagation simulation scheme is presented which gives qualitative and quantitative information on radio coverage characteristics in urban microcell environments. The simulation is based on modeling radio wave propagation using the spectral incremental propagation (SIP) procedure. The geometry considered consists of a rectangular layout of avenues intersecting with streets. The transmitter antenna height is well below the roof line of the surrounding buildings so that diffraction over the roofs can be neglected. The simulation results are compared with measurements conducted in downtown Tampa, Florida in October 1990. The expected guiding phenomenon along avenues and streets is demonstrated. Also, similar to measurements reported in the literature, the simulation results show 5-dB to 20-dB peaks at intersections, on streets parallel to the street containing the transmitter