On the optimum approximation of the personal communication network's RF cell area

The demanded maximization of system's capacity and in combination with the usage of high operating frequency, leads the telecommunication systems designers to adopt strategies based on micro and pico cell planning. These strategies, employ a large number of cells, with the corresponding base transmitting and receiving stations located at relatively low heights above street level. For effective cell planning, it is important to have the knowledge of the effects of both, the multipath transmission and propagation in lineal streets under line-of sight conditions. This paper investigates theoretically and experimentally the propagation characteristics of a DCS 1800 system operating in the city center of Patras. Moreover, a new RF propagation model is presented that determines and approximates efficiently the involved propagation parameters suitable for the optimum determination of the system's cellular area. The new proposed RF model is based on the involved parameters relative to the propagation path losses and multipath fading.