TETRA Outdoor Large-scale Received Signal Prediction Model Based on Recent RF Measurements in Riyadh Urban Area

Abstract TETRA outdoor large-scale received signal prediction model is presented here. The model follows log- distance model. It is derived based on received signal strength survey measurements of a TETRA system, operating in the 300-400 MHz band, in Riyadh City. The model is aimed to assist practicing engineers in the estimation of received power or electric field strength as well as path-loss at any given distance from the base station or vice versa. The model exponent (n) for the selected routes is found to be 3 ± 0.7. However, the overall value ol n tor urban area in Riyadh City is found to be 3.22. It is noted that the values of n obtained are low, compared to values obtained in several European cities, as the streets are wider and the buildings’ heights are lower in most parts of the routes in Riyadh.