Implications of propagation modeling on the design of a DS-CDMA in-building mobile communication system

This paper investigates the implications of propagation modeling on the design of a DS-CDMA in-building mobile communication system. Two modeling approaches are considered, namely a floor-averaged propagation model and a localised area model that considers individual propagation paths for a range of potential mobile user locations. Results (measured at 1.8 GHz) show that overall system performance estimates are heavily dependent on the model used to describe the building´s propagation characteristics and suggest that the former approach leads to a rather pessimistic prediction of system performance when compared with the later. This suggests that unnecessarily conservative design would be likely if the former approach was utilised as part of a system planning process