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dc.contributor.authorAcar, Yusuf
dc.contributor.authorDoğan, Hakan
dc.contributor.authorPanayırcı, Erdal
dc.date.accessioned2019-06-27T08:01:19Z
dc.date.available2019-06-27T08:01:19Z
dc.date.issued2017
dc.identifier.issn0929-6212
dc.identifier.issn1572-834X
dc.identifier.urihttps://hdl.handle.net/20.500.12469/343
dc.identifier.urihttps://doi.org/10.1007/s11277-016-3687-9
dc.description.abstractSpatial modulation orthogonal frequency division multiplexing (SM-OFDM) system has been recently proposed as an alternative for multiple-input multiple-output (MIMO)-OFDM systems to increase spectral efficiency by keeping a low-complexity implementation. In the literature SM-OFDM systems assume a perfect channel state information (P-CSI) available at the receiver for coherent detection and the channel estimation problem is not considered. It is clear that the channel estimation is a critical issue on the performance of SM-OFDM systems. In this paper a frame structure where pilot symbols are typically interspersed with data symbols among the sub-carriers to aid the channel estimation is considered. Then the pilot symbol aided channel estimation (PSA-CE) technique with different interpolations is proposed for the SM-OFDM systems. It is shown that in the proposed PSA-CE equidistantly spaced pilot symbols allow to reconstruct the channel response by means of interpolation if the spacing of the pilots is sufficiently close to satisfy the sampling theorem. Linear nearest neighbor piecewise cubic Hermite and the low-pass interpolations are investigated to explore trade-off between complexity and performances. We show that the low pass interpolator yields better performance than the other interpolation techniques for selected cases such as higher order modulations. The results validate the potential of the proposed PSA-CE estimation applying to SM-OFDM systems.
dc.language.isoEnglish
dc.publisherSpringer
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectMultiple-input multiple-output (MIMO)
dc.subjectOrthogonal frequency division multiplexing (OFDM)
dc.subjectSpatial modulation (SM)
dc.subjectChannel estimation
dc.subjectInterpolation
dc.titlePilot Symbol Aided Channel Estimation for Spatial Modulation-OFDM Systems and its Performance Analysis with Different Types of Interpolations
dc.typeArticle
dc.identifier.startpage1387
dc.identifier.endpage1404
dc.relation.journalWireless Personal Communications
dc.identifier.issue3
dc.identifier.volume94
dc.identifier.wosWOS:000401758400060
dc.identifier.doi10.1007/s11277-016-3687-9
dc.contributor.khasauthorPanayırcı, Erdal


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