UL RSSI as a design consideration for distributed antenna systems, using a radial basis function model for UL RSSI

Authors:
Sarel Roets;Praven Reddy;Poovendren Govender
Affiliations:
Mobile Telephone Network, Johannesburg, South Africa;Mobile Telephone Network, Johannesburg, South Africa;Ericsson, Ericsson South Africa, South Africa
Venue:
INOC'11 Proceedings of the 5th international conference on Network optimization
Year:
2011

Citing 3
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Abstract

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.