Abstract
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.
Original language | English |
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Article number | 7932485 |
Pages (from-to) | 1124-1127 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 29 |
Issue number | 13 |
DOIs | |
Publication status | Published - Jul 2017 |
Externally published | Yes |
Keywords
- Optical communication
- eigenvector
- orthogonal frequency division multiplexing (OFDM)
- phase noise suppression.