Wide-range frequency offset estimation method for a coherent optical FBMC/OQAM system

Daobin Wang; Bo Chen; Handan Chong; Junjie Liu; Lihua Yuan; Xiaoxiao Li

doi:10.1117/12.2542734

20 December 2019 Wide-range frequency offset estimation method for a coherent optical FBMC/OQAM system

Daobin Wang, Bo Chen, Handan Chong, Junjie Liu, Lihua Yuan, Xiaoxiao Li

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112090J (2019) https://doi.org/10.1117/12.2542734
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

In this paper, we propose a wide-range LFO estimation and correction procedure for a coherent optical FBMC/OQAM system. Using a deliberately designed preamble, this method can not only precisely estimate the fractional frequency offset, but also effectively implement the estimation of the integer frequency offset. After a correction of the frequency offset, the final channel responses are acquired by inter-frame averaging and cubic spline interpolation. We investigated the accuracy and stability of this method under the influence of fiber dispersion and nonlinearity. The results from numerical simulation experiments show that the proposed low complexity technique is fully applicable to fiber channel and can significantly improve the performance of CO-FBMC/OQAM systems with respect to the bit-error-rate.

Citation Download Citation

Daobin Wang, Bo Chen, Handan Chong, Junjie Liu, Lihua Yuan, and Xiaoxiao Li "Wide-range frequency offset estimation method for a coherent optical FBMC/OQAM system", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112090J (20 December 2019); https://doi.org/10.1117/12.2542734

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KEYWORDS

Fourier transforms

Receivers

Optical filters

Orthogonal frequency division multiplexing

Signal processing

Transmitters

Error analysis

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