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Title Low-complexity ICI Estimator for SEFDM
Authors (Minseok So) ; (Kyeongwon Park) ; (Wangrok Oh)
DOI https://doi.org/10.5573/IEIESPC.2020.9.6.485
Page pp.485-490
ISSN 2287-5255
Keywords Spectrally efficient frequency division multiplexing; Inter-carrier interference
Abstract To increase the spectral efficiency, more sub-carriers are packed into a given frequency band in spectrally efficient frequency division multiplexing (SEFDM) than in conventional orthogonal frequency division multiplexing (OFDM). Compared to OFDM, the sub-carrier spacing is reduced, so inter-carrier interference (ICI) is inherently induced in SEFDM. Hence, to achieve maximum performance of SEFDM, the ICI should be estimated and compensated within a receiver.
Several ICI estimation schemes have been proposed for SEFDM, but unfortunately, the complexity required for ICI estimation is relatively high, especially when there is a large number of subcarriers.
In this paper, a reduced-complexity ICI estimation scheme is proposed. By using the proposed scheme, virtually identical bit error rate performance can be achieved with less complexity than previously proposed ICI estimators for SEFDM.