• DOI:10.1117/12.2261932
• Corpus ID: 15565532

Close-form expression of one-tap normalized LMS carrier phase recovery in optical communication systems

@inproceedings{Xu2016CloseformEO,
  title={Close-form expression of one-tap normalized LMS carrier phase recovery in optical communication systems},
  author={Tianhua Xu and Gunnar Jacobsen and Sergei Popov and Jie Li and Tiegen Liu and Yimo Zhang},
  booktitle={Other Conferences},
  year={2016}
}

• Tianhua Xu, G. Jacobsen, +3 authors Yimo Zhang
• Published in Other Conferences 22 February 2016
• Physics

The performance of long-haul high speed coherent optical fiber communication systems is significantly degraded by the laser phase noise and the equalization enhanced phase noise (EEPN). In this paper, the analysis of the one-tap normalized least-mean-square (LMS) carrier phase recovery (CPR) is carried out and the close-form expression is investigated for quadrature phase shift keying (QPSK) coherent optical fiber communication systems, in compensating both laser phase noise and equalization enhanced phase noise. Numerical simulations have also been implemented to verify the theoretical analysis. It is found that the one-tap normalized least-mean-square algorithm gives the same analytical expression for predicting CPR bit-error-rate (BER) floors as the traditional differential carrier phase recovery, when both the laser phase noise and the equalization enhanced phase noise are taken into account.