Measurement, characterization and modeling of the wideband indoor channel

Detailed knowledge of radio propagation inside buildings is essential for successful design of indoor communication systems. The research presented in this paper is concerned with measurement, characterization and modeling of the indoor wideband channel response in the 1.75-1.85 GHz frequency band. In order to investigate and model the wideband channel characteristics for indoor environments, time delay profile measurements have been taken inside a modern building with receiver-transmitter separations from 5-30 m. Channel characteristics such as mean excess delay, delay spread and path loss are studied. Possible relations between these parameters are also studied. Finally, a wideband model based on ray-tracing is compared to the measurement results to determine the model´s overall accuracy