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

摘要

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.