System performance of WCDMA enhanced uplink

We present the potential performance improvements attainable by new enhancements to the WCDMA uplink. Improvements can be expected in both system capacity and end-user perceived performance. In this paper we focus on the capacity gains of short TTI, hybrid ARQ and scheduling in node-B. The performan...

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Bibliographic Details
Main Authors: Helmersson, K.W., Englund, E., Edvardsson, M., Edholm, C., Parkvall, S., Samuelsson, M., Wang, Y.-P.E., Jung-Fu Cheng
Format: Conference Proceeding
Language:English
Subjects:
Automatic repeat request
Data communication
Delay
Downlink
Enhanced Uplink
Interference
Multiaccess communication
Node-B rate scheduling
Performance gain
Robustness
System performance
Testing
WCDMA
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Summary:We present the potential performance improvements attainable by new enhancements to the WCDMA uplink. Improvements can be expected in both system capacity and end-user 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 TTL. Our studies indicate that with the introduction of enhanced uplink the gain in uplink capacity can be in the order of 70-100%.
ISSN:1550-2252
DOI:10.1109/VETECS.2005.1543555