Low Complexity ICI Estimation Scheme for Spectrally Efficient FDM 


Vol. 42,  No. 12, pp. 2241-2247, Dec.  2017
10.7840/kics.2017.42.12.2241


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  Abstract

SEFDM (Spectrally Efficient Frequency Division Multiplexing) transmits more data by reducing sub-carrier spacing compared to conventional OFDM (Orthogonal Frequency Division Multiplexing). However, orthogonality between the sub-carriers can not be guaranteed and thus, ICI (Inter-Carrier Interference) should be estimated and compensated. A time-domain ICI estimator for coded SEFDM was proposed but, unfortunately, the required complexity drastically increases for some bandwidth compression factors. A frequency-domain ICI estimator was proposed which reduces complexity by estimating ICI in frequency-domain with a circular convolution of the soft estimated symbols and a ICI pattern sequence. In this paper, we propose a low complexity ICI estimator which estimates the ICI by only considering major ICI terms from adjacent sub-carriers. The proposed scheme not only offers virtually identical bit error performance but also requires less complexity compared to those of the previously proposed ICI estimators.

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  Cite this article

[IEEE Style]

K. Park, D. Kang, A. Lee, W. Oh, "Low Complexity ICI Estimation Scheme for Spectrally Efficient FDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 12, pp. 2241-2247, 2017. DOI: 10.7840/kics.2017.42.12.2241.

[ACM Style]

Kyeongwon Park, Donghoon Kang, Arim Lee, and Wangrok Oh. 2017. Low Complexity ICI Estimation Scheme for Spectrally Efficient FDM. The Journal of Korean Institute of Communications and Information Sciences, 42, 12, (2017), 2241-2247. DOI: 10.7840/kics.2017.42.12.2241.

[KICS Style]

Kyeongwon Park, Donghoon Kang, Arim Lee, Wangrok Oh, "Low Complexity ICI Estimation Scheme for Spectrally Efficient FDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 12, pp. 2241-2247, 12. 2017. (https://doi.org/10.7840/kics.2017.42.12.2241)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880