Impact of a Concrete Room on the Performance of Cellular Telephone Communications for Low Bit Rate Applications (original) (raw)

In this paper, a new propagation model, in macrocellular wireless communication systems, is derived. The model characterizes the base station to mobile radio channel when the propagated signal is being obstructed by lossy concrete room in which the mobile phone moves. The analysis is performed by using ray-tracing techniques combined with uniform theory of diffraction (UTD), in addition to using a UTD modified heuristic diffraction coefficient for non-perfectly conducting wedges. The maximum considered ray reflections are three, single and double diffractions are also considered in this study. Therefore, all expected significant ray contributions in multipath channel are included. These rays include direct, reflected, refracted and diffracted paths, or any combination of the mentioned paths. The mathematical propagation model is derived, after which the model is implemented by different computer programs written in Matlab. For low bit rate applications (narrowband systems), the atte...