Soft-output MIMO detectors with channel estimation error

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dc.contributor.authorJalloul, Louay M.A.
dc.contributor.authorAlex, Sam P.
dc.contributor.authorMansour, Mohammad M.
dc.contributor.departmentDepartment of Electrical and Computer Engineering
dc.contributor.facultyMaroun Semaan Faculty of Engineering and Architecture (MSFEA)
dc.contributor.institutionAmerican University of Beirut
dc.date.accessioned2025-01-24T11:29:15Z
dc.date.available2025-01-24T11:29:15Z
dc.date.issued2015
dc.description.abstractNew expressions for the soft decision bit log-likelihood ratio (LLR) of a MIMO system using quadrature amplitude modulation (QAM) taking into account channel estimation error (CEE). The bit LLR for the maximum likelihood (ML) and the linear minimum mean-squared error (MMSE) receivers are derived, showing in both receivers explicit scaling of the LLR that is a function of the QAM symbol and the CEE variance. These new expressions for the LLRs are used to show that only modest improvements in the link performance are achieved relative to the LLRs that do not take into account the CEE. This indicates that separating the detector design from channel estimation does not significantly impact the system performance, which leads to simplifications in the overall receiver implementation. © 2014 IEEE.
dc.identifier.doihttps://doi.org/10.1109/LSP.2014.2374425
dc.identifier.eid2-s2.0-84919884175
dc.identifier.urihttp://hdl.handle.net/10938/27146
dc.language.isoen
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.relation.ispartofIEEE Signal Processing Letters
dc.sourceScopus
dc.subjectChannel estimation error
dc.subjectLog-likelihood ratio
dc.subjectMaximum likelihood
dc.subjectMimo
dc.subjectMmse
dc.subjectQam
dc.subjectAmplitude modulation
dc.subjectLunar surface analysis
dc.subjectMean square error
dc.subjectMimo systems
dc.subjectQuadrature amplitude modulation
dc.subjectBit log-likelihood ratio
dc.subjectChannel estimation error (cee)
dc.subjectChannel estimation errors
dc.subjectLinear minimum mean-squared errors
dc.subjectLog likelihood ratio
dc.subjectQuadrature-amplitude modulations (qam)
dc.subjectReceiver implementation
dc.subjectMaximum likelihood estimation
dc.titleSoft-output MIMO detectors with channel estimation error
dc.typeArticle

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