Measurements and modeling of an indoor radio channel

In this paper, measurement and simulation results for modeling of wave propagation in an indoor environment are presented. Complex wideband frequency responses centered at frequency 3.6 GHz have been measured and approximation to the impulse response of the channel is obtained from the Inverse Fourier Transform of the frequency response. Narrowband measurements were conducted at 3.3, 3.6 and 3.9 GHz to compute the Path Loss Law. All the experiments were performed in a triple-storied office building. A ray tracing technique has been used to simulate the wave propagation in the building. Ray tubes have been used to model the wave propagation and all the reflected and transmitted ray tubes from interfaces have been included. A program has been developed in MATLAB that can be used to simulate wave propagation in large 3D buildings. Simulation results have been verified by comparing them with measured data.