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dc.contributor.authorChang, YJen_US
dc.contributor.authorLin, YNen_US
dc.contributor.authorLin, DWen_US
dc.date.accessioned2014-12-08T15:40:26Z-
dc.date.available2014-12-08T15:40:26Z-
dc.date.issued2003-09-01en_US
dc.identifier.issn1530-8669en_US
dc.identifier.urihttp://dx.doi.org/10.1002/wcm.157en_US
dc.identifier.urihttp://hdl.handle.net/11536/27608-
dc.description.abstractThe 3GPP WCDMA is a widely accepted third-generation cellular system standard. By using nonorthogonal codes for different users. the Multiple access interference (MAI) can be a limiting factor for system performance, as for other CDMA systems. Multiuser detection (MUD) is known to reduce MAI and improve CDMA system performance. but many Such techniques have high complexity. Successive interference cancellation (SIC) is an effective MUD technique with relatively low complexity. We consider the software implementation of an SIC receiver for WCDMA uplink transmission on a commercially available general-purpose multi digital signal processor (DSP) platform. This also goes in line with the recent interest in software-defined radio. Issues addressed in this work include job partitioning and signal routing for multiprocessor implementation, design of SIC components (especially the channel estimator and the si mal regenerator), determination of the precision of fixed-point computations. consideration of the receiver's error performance and analysis of the implementation's complexity and efficiency. These issues are tightly coupled with the 3GPP WCDMA specifications. Because the employed platform only contains four DSPs, the implementation only considers up to three users. But this is sufficient for Lis to appreciate various DSP implementation issues of an SIC receiver. Moreover, by the nature of SIC, it is easy to extend the implementation to handle more users with an enlarged platform. Our present implementation achieves real-time speed in the RAKE receiver part of the complete receiver. Due to the complexity in signal regeneration, the overall SIC receiver still falls short of the real-time requirement when interference cancellation is activated. In fact, the platform employed presently cannot support real-time processing when the number of multipaths is four or more, unless either the system architecture or the SIC algorithm is redesigned. Such and other ways of improvement are relegated to potential future work. Copyright (C) 2003 John Wiley Sons, Ltd.en_US
dc.language.isoen_USen_US
dc.subjectCDMAen_US
dc.subjectthird-generation partnership project (3GPP)en_US
dc.subjectmultiuser detection (MUD)en_US
dc.subjectsuccessive interference cancellation (SIC)en_US
dc.subjectmultipath channelsen_US
dc.subjectdigital signal processors (DSPs)en_US
dc.titleDSP implementation of successive interference cancellation (SIC) receiver for 3GPP WCDMA uplink transmissionen_US
dc.typeArticleen_US
dc.identifier.doi10.1002/wcm.157en_US
dc.identifier.journalWIRELESS COMMUNICATIONS & MOBILE COMPUTINGen_US
dc.citation.volume3en_US
dc.citation.issue6en_US
dc.citation.spage789en_US
dc.citation.epage800en_US
dc.contributor.department電子工程學系及電子研究所zh_TW
dc.contributor.department電信研究中心zh_TW
dc.contributor.departmentDepartment of Electronics Engineering and Institute of Electronicsen_US
dc.contributor.departmentCenter for Telecommunications Researchen_US
dc.identifier.wosnumberWOS:000186959500010-
dc.citation.woscount1-
Appears in Collections:Articles


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