UL RSSI as a Design Consideration for Distributed Antenna Systems, Using a Radial Basis Function Model for UL RSSI

摘要

This paper aims to develop a non-linear model for the Uplink Received Signal Strength Indicator (UL_RSSI) during high capacity stadium events. Radial Basis Functions (RBF's) are used to aid in developing the model for the UL.RSSI as the amount of users in the stadium changes. Air Speech Equivalent (ASE) is used to model users on the uplink. Furthermore a model is derived to assist planning engineers to determine a suitable amount of sectors needed for Distributed Antenna Systems (DAS) that will not cause degradation in the noise floor. Results for the UL.RSSI model prove to follow trending of actual noise floor characteristics during high capacity stadium events with reasonable accuracy. The model was used along with a design example and results if implemented should provide Enhanced Uplink/High Speed Uplink Packet Access (EUL/HSUPA) users with an acceptable Quality of Service.