Low ICI symbol boundary alignment for 5g numerology design

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dc.authorid0000-0003-3309-8182
dc.authorid0000-0001-9474-7372
dc.contributor.authorNemati, Mahyar
dc.contributor.authorArslan, Hüseyin
dc.date.accessioned10.07.201910:49:13
dc.date.accessioned2019-07-10T19:56:15Z
dc.date.available10.07.201910:49:13
dc.date.available2019-07-10T19:56:15Z
dc.date.issued2018
dc.departmentİstanbul Medipol Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü
dc.descriptionWOS: 000425726100001
dc.description.abstractSymbol boundary alignment, with respect to waveform selection, has an important impact on the numerology design for fifth-generation mobile applications. The current symbol boundary alignment, along with orthogonal frequency division multiplexing (OFDM) waveform, strongly suffers from intercarrier interference (ICI) especially in unmanned aerial vehicles (UAV) communications. This happens when the mobility causes Doppler effect which results in loss of orthogonality in OFDM. The available solutions for overcoming the ICI problem suffer from high complexity, low spectral efficiency, and incompatibility with the current radio access technologies. This paper presents a novel symbol boundary alignment, called Low ICI Symbol (LICIS) boundary alignment numerology, to avoid the disadvantages of the available solutions. LICIS utilizes large subcarrier-spacing to reduce the ICI power (e.g., around 5-dB ICI power reduction with subcarrier spacing of 30 kHz in high-speed UAV communications). Moreover, LICIS is based on the same reference clock as local thermal equilibrium (LIE) which guarantees its compatibility with the current LIE numerology. In addition, this approach places only one guard-interval at the end of a sequence of OFDM symbols and creates a subslot. This leads to less overhead and preserves the spectral efficiency. Furthermore, a pre-fast Fourier transform (FFT) multipath channel equalizer is considered for removing the intersymbol interference between the OFDM symbols occurring within the subslot. Only one additional EFT and IEET operations are required for the equalizer which creates an acceptable complexity increment compared to the complexity of other available solutions. Numerical and analytical evaluations show the superior performance of the proposed technique in terms of reliability and spectral efficiency.
dc.identifier.citationNemati, M. ve Arslan, H. (2018). Low ICI symbol boundary alignment for 5g numerology design. IEEE Access, 6. https://dx.doi.org/10.1109/ACCESS.2017.2782830
dc.identifier.doi10.1109/ACCESS.2017.2782830
dc.identifier.issn2169-3536
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://dx.doi.org/10.1109/ACCESS.2017.2782830
dc.identifier.urihttps://hdl.handle.net/20.500.12511/2636
dc.identifier.volume6
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.relation.ispartofIEEE Accessen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectDoppler
dc.subjectGuard Interval (GI)
dc.subjectIntercarrier Interference (ICI)
dc.subjectNumerology
dc.subjectSubcarrier-Spacing
dc.subjectSymbol Boundary Alignment
dc.subjectUnmanned Aerial Vehicles (UAV)
dc.subjectSpectral Efficiency
dc.titleLow ICI symbol boundary alignment for 5g numerology design
dc.typeArticle

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