Performance analysis of Hexagonal QAM constellations on quadrature spatial modulation with perfect and imperfect channel estimation

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dc.authorid0000-0002-1163-5920
dc.contributor.authorÇögen, Fatih
dc.contributor.authorAydın, Erdoğan
dc.date.accessioned2021-08-24T07:40:31Z
dc.date.available2021-08-24T07:40:31Z
dc.date.issued2021
dc.departmentTAÜ, Mühendislik Fakültesi, Mekatronik Mühendisliği Bölümüen_US
dc.description.abstractIn this study, the quadrature spatial modulation (QSM) technique, which is a rational multiple-input multiple-output (MIMO) transmission technique and frequently encountered in recent studies in the literature, and the hexagonal quadrature amplitude modulation (HQAM) constellation technique, which combines symbols in an "optimum" way are combined. This new MIMO scheme has been named by the authors as HQAM-QSM. Also, the impact of imperfect channel knowledge on the performance of the proposed scheme is examined. The HQAM constellation technique is a technique that provides better results under the same power assumption than the conventional QAM constellation in terms of symbol separation and is more often encountered when it comes to energy-efficiency. Due to the nature of HQAM symbols, error-floor occurs when the QSM system is applied. Hence, the optimum angle is obtained by rotating the HQAM symbols. With this optimum angle, it has been seen that the error-floor disappeared and the performance of the system is improved. Besides, the HQAM technique performs similar bit error rates (BER) to QAM at high signal-to-noise ratio (SNR) values. From this point forth, in our study, the rational HQAM-QSM technique, which uses energy-efficient HQAM symbols instead of traditional modulated QAM symbols and also carries information effectively on two active antennas, is proposed. Performance analysis of the HQAM-QSM technique is performed on Rayleigh fading channels. (C) 2021 Elsevier B.V. All rights reserved.
dc.identifier.citationÇögen, F., & Aydın, E. (2021). Performance analysis of Hexagonal QAM constellations on quadrature spatial modulation with perfect and imperfect channel estimation. Physical Communication, 101379.
dc.identifier.doi10.1016/j.phycom.2021.101379
dc.identifier.issn1874-4907
dc.identifier.issue2021en_US
dc.identifier.scopus2-s2.0-85108738933
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://hdl.handle.net/20.500.12846/589
dc.identifier.volume47en_US
dc.identifier.wosWOS:000675885300003
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorÇögen, Fatih
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysical Communication
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectSpatial Modulationen_US
dc.subjectHexagonal Quadrature Amplitude Modulationen_US
dc.subjectMIMO Systemsen_US
dc.titlePerformance analysis of Hexagonal QAM constellations on quadrature spatial modulation with perfect and imperfect channel estimation
dc.typeArticle

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