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dc.contributor.authorGursoy, M.C.en_US
dc.contributor.authorGezici, S.en_US
dc.date.accessioned2016-02-08T12:16:46Z
dc.date.available2016-02-08T12:16:46Z
dc.date.issued2011en_US
dc.identifier.urihttp://hdl.handle.net/11693/28299
dc.description.abstractCognitive radio transmissions in the presence of channel uncertainty are considered. In practical scenarios, cognitive secondary users need to perform both channel sensing in order to identify whether the channel is being occupied by the primary users or not, and also channel estimation in order to learn the channel fading coefficients. Generally, errors occur in both channel sensing and estimation, and this leads to a coupling between the two. More specifically, imperfect sensing affects both the structure and the performance of channel estimation schemes. With this motivation, the interactions between channel sensing and estimation are studied in this paper. In particular, different channel estimation schemes including minimum mean-square error (MMSE), linear MMSE, and mismatched MMSE estimations are analyzed, and their dependence on sensing decisions and their performances are investigated. © 2011 IEEE.en_US
dc.language.isoEnglishen_US
dc.source.titleGLOBECOM - IEEE Global Telecommunications Conferenceen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/GLOCOM.2011.6133711en_US
dc.subjectchannel estimationen_US
dc.subjectchannel sensingen_US
dc.subjectCognitive radioen_US
dc.subjectminimum mean-square error estimationen_US
dc.subjectChannel fadingen_US
dc.subjectChannel sensingen_US
dc.subjectChannel uncertaintiesen_US
dc.subjectMinimum mean-square erroren_US
dc.subjectMinimum mean-square-error estimationsen_US
dc.subjectMMSE estimationen_US
dc.subjectChannel estimationen_US
dc.subjectCognitive radioen_US
dc.subjectCommunicationen_US
dc.subjectMean square erroren_US
dc.subjectRadio systemsen_US
dc.subjectRadio transmissionen_US
dc.subjectEstimationen_US
dc.titleOn the interplay between channel sensing and estimation in cognitive radio systemsen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Electrical and Electronics Engineering
dc.identifier.doi10.1109/GLOCOM.2011.6133711en_US


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