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dc.contributor.authorCoşkun, Orhan
dc.contributor.authorChugg, Keith M.
dc.date.accessioned2016-07-28T12:25:36Z
dc.date.available2016-07-28T12:25:36Z
dc.date.issued2005-08
dc.identifier.citationCoşkun, O., and Chugg, K.M. (2005). Combined coding and training for unknown ISI channels. IEEE Transactions on Communications, 53(8), 1310-1322. doi:10.1109/TCOMM.2005.852847en_US
dc.identifier.issn0090-6778
dc.identifier.urihttp://doi.org/10.1109/TCOMM.2005.852847
dc.identifier.urihttp://hdl.handle.net/11147/2007
dc.description.abstractThe traditional method of sending a training signal to identify a channel, followed by data, may be viewed as a simple code for the unknown channel. Results in blind sequence detection suggest that performance similar to this traditional approach can be obtained without training. However, for short packets and/or time-recursive algorithms, significant error floors exist due to the presence of sequences that are indistinguishable without knowledge of the channel. In this paper, we reconsider training-signal design in light of recent results in blind sequence detection. Specifically, we consider the tradeoff between the complexity of receiver processing and the amount of training overhead required. More generally, we design training codes which combine modulation and training. In order to design these codes, we find an expression for the pairwise error probability of the joint maximum-likelihood (JML) channel and sequence estimator. This expression motivates a pairwise distance for the JML receiver based on principal angles between the range spaces of data matrices. The general code-design problem (generalized sphere packing) is formulated as the clique problem associated with an unweighted, undirected graph. We provide optimal and heuristic algorithms for this clique problem. For both long and short packets, we demonstrate that significant improvements are possible by jointly considering the design of the training, modulation, and receiver processing.en_US
dc.language.isoengen_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US
dc.relation.isversionof10.1109/TCOMM.2005.852847en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAdaptive estimationen_US
dc.subjectBlind acquisitionen_US
dc.subjectClique algorithmen_US
dc.subjectIntersymbol interference (ISI)en_US
dc.subjectTraining codesen_US
dc.subjectCommunication channelsen_US
dc.titleCombined coding and training for unknown ISI channelsen_US
dc.typearticleen_US
dc.contributor.institutionauthorCoşkun, Orhan
dc.relation.journalIEEE Transactions on Communicationsen_US
dc.contributor.departmentIzmir Institute of Technology. Electronics and Communication Engineeringen_US
dc.identifier.volume53en_US
dc.identifier.issue8en_US
dc.identifier.startpage1310en_US
dc.identifier.endpage1322en_US
dc.identifier.wosWOS:000231394700013
dc.identifier.scopusSCOPUS:2-s2.0-24644472380
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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