Beamspace MIMO systems with reduced beam selection complexity

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dc.authorid0000-0001-9474-7372
dc.contributor.authorÇetinkaya, Şinasi
dc.contributor.authorArslan, Hüseyin
dc.date.accessioned2023-06-16T11:15:00Z
dc.date.available2023-06-16T11:15:00Z
dc.date.issued2023
dc.departmentİstanbul Medipol Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü
dc.description.abstractBeamspace multiple-input multiple-output (B-MIMO) systems with proper beam selection (BS) promise to lower the radio-frequency (RF) chains overhead with no noticeable degradation in performance. Most of the existing BS schemes are not practical due to the computational cost arising from iterative search or alternating optimization. Hence, this letter examines the complexity reduction of the existing BS with incremental QR precoder (I-QR-P) and decremental QR precoder (D-QR-P). The proposed two-stage and three-stage algorithms reduce the complexity of D-QR-P and I-QR-P, respectively. Both aim to lower complexity by decreasing the candidate beam size by eliminating the beams with no contribution to any user and using matrix perturbation theory to update QR decompositions. Numerical results reveal that the proposed algorithms considerably reduce the complexity while maintaining a similar sum-rate with baseline algorithms.
dc.identifier.citationÇetinkaya, Ş. ve Arslan, H. (2023). Beamspace MIMO systems with reduced beam selection complexity. IEEE Communications Letters, 27(5), 1427-1431. https://doi.org/10.1109/LCOMM.2023.3264104
dc.identifier.doi10.1109/LCOMM.2023.3264104
dc.identifier.endpage1431
dc.identifier.issn1089-7798
dc.identifier.issn1558-2558
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85153381690
dc.identifier.scopusqualityQ1
dc.identifier.startpage1427
dc.identifier.urihttps://doi.org/10.1109/LCOMM.2023.3264104
dc.identifier.urihttps://hdl.handle.net/20.500.12511/11100
dc.identifier.volume27
dc.identifier.wos000986722500037en_US
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorArslan, Hüseyin
dc.language.isoen
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.relation.ecinfo:eu-repo/grantAgreement/EC/FP7/ECCS-1923857
dc.relation.ispartofIEEE Communications Lettersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectBeamspace MIMO
dc.subjectBeam Selection
dc.subjectmmWave Communication
dc.subjectPrecoding
dc.subjectQR Decomposition
dc.titleBeamspace MIMO systems with reduced beam selection complexity
dc.typeArticle

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