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A Dual Logarithm Model for Estimation of WCDMA Downlink Pole Capacity in Multipath Propagation Channel and Verification with Measurements in Live Node B Sites

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3 Author(s)
Chen, Y.H. ; Oriental Inst. of Technol., Taipei ; Wang, Y.C. ; Lai, C.L.

A new and precise dual logarithm model are derived to estimate WCDMA downlink pole capacity in the local multipath propagation channel and verified with measurements from several live Node B sites. Model estimations show excellent consistence with measured data. As well, cell-breathing phenomenon has been detected. In estimating the Downlink pole capacity of WCDMA radio network, we propose a new algorithm to calculate orthogonality factor for different spreading codes and derive a dual logarithm equation for the orthogonality factor with respect to the data bit rate. With that equation, an exact solution of the downlink pole capacity for an isolated cell or a cluster of cells can be estimated when loading distribution for all services are assigned and the downlink interference ratio is calculated as well.

Published in:

Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. IEEE

Date of Conference:

1-3 May 2007