Filterbank Multicarrier Scheme Robust to Inter-user Frequency Offset for Uplink 


Vol. 44,  No. 5, pp. 798-805, May  2019
10.7840/kics.2019.44.5.798


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  Abstract

In this paper, we propose a new filter-bank multi-carrier(FBMC) robust to inter-user frequency offset for uplink. To do this, we first propose a cyclic-shift discrete Fourier transform(DFT)-spread FBMC that minimizes the interference of adjacent users by allocating the one with the smallest power among the DFT-spread data symbols to the band edge subcarrier of each user using cyclic-shift. We also propose a scheme to blind detect the cyclic-shift values of DFT-spread symbols for each user. In the simulation results, we confirm that the cyclic-shift DFT-spread FBMC suppresses the interference between adjacent users in the environment with large inter-user frequency offset range. In addition, we clarify the preferred region of the frequency offset and the signal-to-noise ratio in which the cyclic-shift DFT-spread FBMC outperforms the conventional DFT-spread FBMC and vice versa. Through this result, we propose a hybrid FBMC scheme which optimizes the system performance by switching the conventional FBMC and the proposed FBMC according to the inter-user frequency offset and noise.

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  Cite this article

[IEEE Style]

D. Na and K. Choi, "Filterbank Multicarrier Scheme Robust to Inter-user Frequency Offset for Uplink," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 5, pp. 798-805, 2019. DOI: 10.7840/kics.2019.44.5.798.

[ACM Style]

Dongjun Na and Kwonhue Choi. 2019. Filterbank Multicarrier Scheme Robust to Inter-user Frequency Offset for Uplink. The Journal of Korean Institute of Communications and Information Sciences, 44, 5, (2019), 798-805. DOI: 10.7840/kics.2019.44.5.798.

[KICS Style]

Dongjun Na and Kwonhue Choi, "Filterbank Multicarrier Scheme Robust to Inter-user Frequency Offset for Uplink," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 5, pp. 798-805, 5. 2019. (https://doi.org/10.7840/kics.2019.44.5.798)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880