Doğan, H.Panayırcı, ErdalÇirpan, H.A.Çam, G.2023-10-192023-10-19200809781424419999https://doi.org/10.1109/SIU.2008.4632643https://hdl.handle.net/20.500.12469/49232008 IEEE 16th Signal Processing, Communication and Applications Conference, SIU --20 April 2008 through 22 April 2008 --Aydin --74111In this paper, we present an efficient iterative receiver structure of tractable complexity for joint multiuser detection and multichannel estimation (JDE) ofdirect-sequence code-division multiple-access systems operating in the presence of timevarying flat fading channel. The tilne-varying channel is assumed to be modeled according to a piece-wise constant channel. An optimality criterion is defined and analytical expressions for the corresponding optimized weight coefficients are given. Monte-Carlo simulations of a synchronous scenario show that the proposed JDE receiver have excellent multiuser efficiency and are robust against errors in the estimation of the channel parameters. ©2008 IEEE.trinfo:eu-repo/semantics/closedAccessAccess systemsAnalytical expressionsChannel parametersDs-cdmaIterative receiversJoint multiuser detectionsMonte-carlo simulationsMultichannel estimationsMultiuser efficienciesOptimality criterionsSequence codesWeight coefficientsBinary sequencesCode division multiple accessDielectric relaxationFading (radio)Fading channelsMultiuser detectionSignal processingChannel estimationConference Object10.1109/SIU.2008.46326432-s2.0-56449128511