High-data-rate availability in WCDMA enhanced uplink systems

The Wideband Code-Division Multiple-Access (WCDMA) standard has been evolved to further improve uplink high-data-rate coverage and to reduce delays. These enhancements are achieved by the use of fast scheduling, shorter transmission time interval and fast hybrid ARQ with soft combining. It has been shown that the use of high-data-rate radio access bearers is key to end-to-end uplink packet access performance [1]. In this paper, we study data rate availability in WCDMA Enhanced Uplink systems. Data rate availability as limited by user terminal power or own-signal interference in dispersive channels is investigated. We show that in dispersive channels the use of advanced receivers can further increase the availability of high data rates. Our results indicate that advanced receivers allow good availability of high-speed data access in dispersive channels.