Comparison of different calculating methods for path loss in ray-tracing method at 2GHz

Ray-tracing method is an effective method for wireless propagation predictions. In general there are two methods to calculate the path loss for a given receive point. One is by summing up the individual ray´s power; the other is to sum up individual ray´s electronic field. In this paper a ray-tracing simulation program is used and the two methods are compared at 2GHz. The simulation results show that the second method more agrees with the measurement results. Then, the properties of the K-factor in the indoor environment are analyzed using this tool.