Real-time implementation of the multistage detector for next generation Wideband CDMA systems

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dc.citation.bibtexNameinproceedingsen_US
dc.citation.conferenceNameConference on Advanced Signal Processing Algorightms, Architectures, and Implementationsen_US
dc.citation.firstpage62
dc.citation.lastpage73
dc.citation.locationDenver, COen_US
dc.contributor.authorXu, Gangen_US
dc.contributor.authorCavallaro, Joseph R.en_US
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)en_US
dc.date.accessioned2007-10-31T01:10:12Z
dc.date.available2007-10-31T01:10:12Z
dc.date.issued1999-07-20
dc.date.modified2003-11-10en_US
dc.date.note2001-09-07en_US
dc.date.submitted1999-07-20en_US
dc.descriptionConference Paperen_US
dc.description.abstractThe multistage detection algorithm has been widely accepted as an exective interference cancellation scheme for next generation Wideband Code Division Multiple Access (W-CDMA) base stations. In this paper, we propose a real-time implementation of this detection algorithm in the uplink system, where we have achieved both high performance in the interference cancellation and computational efficiency. When interference cancellation converges, the difference of the detection vectors between two consecutive stages is mostly zero. We recode the estimation bits, mapping from ±1 to 0 and ±2. Bypassing all the zero terms saves computations. Multiplication by ±2 can be easily implemented in hardware as arithmetic shifts. The system delay ofa three-stage detector can be reduced by half with satisfactory bit error rate. We also propose a VLSI implementation of this algorithm that has the potential of real-time performance. The detector handling up to eight users with 12-bit fixed point precision was fabricated using a 1.2 um CMOS technology.en_US
dc.description.sponsorshipTexas Advanced Technology Programen_US
dc.description.sponsorshipNokiaen_US
dc.description.sponsorshipNational Science Foundationen_US
dc.identifier.citationG. Xu and J. R. Cavallaro, "Real-time implementation of the multistage detector for next generation Wideband CDMA systems," 1999.
dc.identifier.urihttps://hdl.handle.net/1911/20456
dc.language.isoeng
dc.subjectCDMA*
dc.subjectinterference cancellation*
dc.subjectreal-time implementation*
dc.subjectreverse link*
dc.subjectfixed-point*
dc.subject.keywordCDMAen_US
dc.subject.keywordinterference cancellationen_US
dc.subject.keywordreal-time implementationen_US
dc.subject.keywordreverse linken_US
dc.subject.keywordfixed-pointen_US
dc.titleReal-time implementation of the multistage detector for next generation Wideband CDMA systemsen_US
dc.typeConference paper
dc.type.dcmiText
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