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

 

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dc.contributor.author Bejide, Emmanuel Oluremi en_ZA
dc.contributor.author Takawira, Fambirai en_ZA
dc.date.accessioned 2015-10-12T10:45:36Z
dc.date.available 2015-10-12T10:45:36Z
dc.date.issued 2005 en_ZA
dc.identifier.citation Bejide, 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.uri http://hdl.handle.net/11427/14159
dc.identifier.uri http://dx.doi.org/10.1155/ASP.2005.883
dc.description.abstract 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. en_ZA
dc.language.iso eng en_ZA
dc.publisher Biomed Central en_ZA
dc.rights This is an Open Access article distributed under the terms of the Creative Commons Attribution License en_ZA
dc.rights.uri http://creativecommons.org/licenses/by/2.0 en_ZA
dc.source EURASIP Journal on Advances in Signal Processing en_ZA
dc.source.uri http://www.asp.eurasipjournals.com/ en_ZA
dc.subject.other Electrical Engineering en_ZA
dc.title An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems en_ZA
dc.type Journal Article en_ZA
uct.type.publication Research en_ZA
uct.type.resource Article en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Electrical Engineering en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Bejide, 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/11427/14159 en_ZA
dc.identifier.chicagocitation Bejide, 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/11427/14159 en_ZA
dc.identifier.vancouvercitation Bejide 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.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


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This is an Open Access article distributed under the terms of the Creative Commons Attribution License Except where otherwise noted, this item's license is described as This is an Open Access article distributed under the terms of the Creative Commons Attribution License