Author(s):

Ke Wang Helmersson, Eva Englund, Maria Edvardsson, Christer Edholm, Stefan Parkvall, Maria Samuelsson, Y.-P Eric Wang,, Jung-Fu Cheng, Ericsson Research

VTC Spring 2005

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System Performance of WCDMA Enhanced Uplink (pdf)

Abstract: 
We present the potential performance improvements attainable by new enhancements to the WCDMA uplink. Improvements can be expected in both system capacity and enduser perceived performance. In this paper we focus on the capacity gains of short TTI, hybrid ARQ and scheduling in Node-B. The performance is studied from both the link-level and system-level perspectives. The link performance results focus on the gains obtained by the introduction of short TTI and hybrid ARQ with soft combining in Node-B. In the system performance results, we also evaluate Node-B based rate scheduling for both 2 ms TTI and 10 ms TTI. Our studies indicate that with the introduction of enhanced uplink the gain in uplink capacity can be in the order of 70-100%.

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