Calculation of the propagation loss in urban radio-access systems

A proposition for a new empirical propagation model, in the form of four formulas appropriate for characteristic types of the urban environment, is outlined. A measurement verification of some well-known models and specification of the propagation environmental are first described. Taking into account about nineteen thousand measurement cases, a new model obtained by multidemensional regression analysis is than presented. Finally, the practical usefulness of the model for radio-system design analysis is discussed.