Eigenvector Basis Expansion-Based Phase Noise Suppression Method for CO-OFDM Systems

Coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is known vulnerable to the laser phase noise. In this letter, we propose a novel phase noise suppression method based on eigenvector basis expansion (EBE) for CO-OFDM systems. With the help of the proposed method, the induc...

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Bibliographic Details
Published in:IEEE photonics technology letters 2017-07, Vol.29 (13), p.1124-1127
Main Authors: Xu, Zhaopeng, Tan, Zhongwei, Yang, Chuanchuan
Format: Article
Language:English
Subjects:
eigenvector
Laser noise
Modulation
OFDM
Optical communication
Optical fiber dispersion
Optical fibers
orthogonal frequency division multiplexing (OFDM)
Phase noise
phase noise suppression
Principal component analysis
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Summary:Coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is known vulnerable to the laser phase noise. In this letter, we propose a novel phase noise suppression method based on eigenvector basis expansion (EBE) for CO-OFDM systems. With the help of the proposed method, the induced phase noise effects can be mitigated efficiently. Numerical results show that compared with the orthogonal basis expansion-based phase noise suppression method, by performing an EBE to the phase noise, a more accurate description of the phase noise can be achieved, and hence leads to a better system performance. Besides, the additional computational complexity is limited, since the eigenvector basis only depends on the laser linewidth.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2706761