Signal strength prediction in built-up areas. Part 1: Median signal strength

Field trials in London between an elevated base station and a mobile moving in the city streets have produced a propagation data base at frequencies between 168 and 900 MHz. Various important parameters such as range, frequency and relative height, together with quantitative measures of the extent of urbanisation, have been used in conjunction with the data base to produce signal strength prediction models. These models are easy to use and go some way towards eliminating the subjective element inherent in assessing the degreee of urbanisation embodied in some other propagation prediction models.