Frequency-domain parallel multiuser detection for quasi-constant envelope OQPSK schemes with high spectral efficiency

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Abstract

In this paper we consider a FDMA (frequencydivision multiple access) system employingOQPSKmodulations (offset quaternary phase shift keying)withquasi-constantenvelope. To increase the overallspectralefficiencywe considerspectraloverlapping between differentfrequencychannels. We present an iterativefrequency-domainreceiverwithparallelmultiuserdetection. Our performance results show that our receiver is able to copewiththe strong ACI levels (adjacent channel interference) inherent tospectraloverlapping, as well aswiththe interference between the in-phase (I) and quadrature (Q) components of theOQPSKsignals, evenforseverely time-dispersive channels.
Original languageUnknown
Title of host publicationIEEE International Conference on Signal Processing and Communication Systems
Pages1-7
DOIs
Publication statusPublished - 1 Jan 2009
Event3rd International Conference on Signal Processing and Communication Systems (ICSPCS'09) -
Duration: 1 Jan 2009 → …

Conference

Conference3rd International Conference on Signal Processing and Communication Systems (ICSPCS'09)
Period1/01/09 → …

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