System performance of WCDMA enhanced uplink

Author

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

Author_Institution

Ericsson Res., Linkoping, Sweden

Volume

3

fYear

2005

fDate

30 May-1 June 2005

Firstpage

1427

Abstract

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%.

Keywords

automatic repeat request; broadband networks; code division multiple access; radio links; WCDMA enhanced uplink; end-user perceived performance; hybrid ARQ; link-level and system-level perspectives; system capacity; uplink capacity; Automatic repeat request; Data communication; Delay; Downlink; Interference; Multiaccess communication; Performance gain; Robustness; System performance; Testing; Enhanced Uplink; Node-B rate scheduling; WCDMA;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st

ISSN

1550-2252

Print_ISBN

0-7803-8887-9

Type

conf

DOI

10.1109/VETECS.2005.1543555

Filename

1543555