An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems

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dc.contributor.authorBejide, Emmanuel Oluremien_ZA
dc.contributor.authorTakawira, Fambiraien_ZA
dc.date.accessioned2015-10-12T10:45:36Z
dc.date.available2015-10-12T10:45:36Z
dc.date.issued2005en_ZA
dc.description.abstractWe propose an iterative multiuser detector for turbo-coded synchronous and asynchronous direct-sequence CDMA (DS-CDMA) systems. The receiver is derived from the maximum a posteriori (MAP) estimation of the single user's transmitted data, conditioned on information about the estimate of the multiple-access interference (MAI) and the received signal from the channel. This multiple-access interference is reconstructed by making hard decisions on the users' detected bits at the preceding iteration. The complexity of the proposed receiver increases linearly with the number of users. The proposed detection scheme is compared with a previously developed one. The multiuser detector proposed in this paper has a better performance when the transmitted powers of all active users are equal in the additive white Gaussian noise (AWGN) channel. Also, the detector is found to be resilient against the near-far effect.en_ZA
dc.identifier.apacitationBejide, E. O., & Takawira, F. (2005). An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems. <i>EURASIP Journal on Advances in Signal Processing</i>, http://hdl.handle.net/11427/14159en_ZA
dc.identifier.chicagocitationBejide, Emmanuel Oluremi, and Fambirai Takawira "An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems." <i>EURASIP Journal on Advances in Signal Processing</i> (2005) http://hdl.handle.net/11427/14159en_ZA
dc.identifier.citationBejide, E. O., & Takawira, F. (2005). An iterative multiuser detector for turbo-coded DS-CDMA systems. EURASIP Journal on Applied Signal Processing, 2005, 883-891.en_ZA
dc.identifier.ris TY - Journal Article AU - Bejide, Emmanuel Oluremi AU - Takawira, Fambirai AB - We propose an iterative multiuser detector for turbo-coded synchronous and asynchronous direct-sequence CDMA (DS-CDMA) systems. The receiver is derived from the maximum a posteriori (MAP) estimation of the single user's transmitted data, conditioned on information about the estimate of the multiple-access interference (MAI) and the received signal from the channel. This multiple-access interference is reconstructed by making hard decisions on the users' detected bits at the preceding iteration. The complexity of the proposed receiver increases linearly with the number of users. The proposed detection scheme is compared with a previously developed one. The multiuser detector proposed in this paper has a better performance when the transmitted powers of all active users are equal in the additive white Gaussian noise (AWGN) channel. Also, the detector is found to be resilient against the near-far effect. DA - 2005 DB - OpenUCT DO - 10.1155/ASP.2005.883 DP - University of Cape Town J1 - EURASIP Journal on Advances in Signal Processing LK - https://open.uct.ac.za PB - University of Cape Town PY - 2005 T1 - An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems TI - An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems UR - http://hdl.handle.net/11427/14159 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/14159
dc.identifier.urihttp://dx.doi.org/10.1155/ASP.2005.883
dc.identifier.vancouvercitationBejide EO, Takawira F. An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems. EURASIP Journal on Advances in Signal Processing. 2005; http://hdl.handle.net/11427/14159.en_ZA
dc.language.isoengen_ZA
dc.publisherBiomed Centralen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution Licenseen_ZA
dc.rights.urihttp://creativecommons.org/licenses/by/2.0en_ZA
dc.sourceEURASIP Journal on Advances in Signal Processingen_ZA
dc.source.urihttp://www.asp.eurasipjournals.com/en_ZA
dc.subject.otherElectrical Engineeringen_ZA
dc.titleAn Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systemsen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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