Pilot-Free Common Phase Error Estimation for CO-OFDM With Improved Spectral Efficiency

Pilot-Free Common Phase Error Estimation for CO-OFDM With Improved Spectral Efficiency

We propose an improved pilot free phase noise mitigation algorithm for CO-OFDM systems using weighted multi-level QPSK partitioning and Kalman filtering. Through extensive Monte Carlo simulations, we demonstrate an improvement in spectral efficiency of <inline-formula><tex-math notation=&qu...

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Bibliographic Details
Main Authors: Lakshmi Narayanan Venkatasubramani, Anirudh Vijay, Deepa Venkitesh, R. David Koilpillai
Format: Article
Language:English
Published: IEEE 2019-01-01
Series:IEEE Photonics Journal
Subjects:
Coherent optical OFDM
phase noise
common phase error
Kalman filter.
Online Access:https://ieeexplore.ieee.org/document/8883033/
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Summary:We propose an improved pilot free phase noise mitigation algorithm for CO-OFDM systems using weighted multi-level QPSK partitioning and Kalman filtering. Through extensive Monte Carlo simulations, we demonstrate an improvement in spectral efficiency of <inline-formula><tex-math notation="LaTeX">$&gt;$</tex-math></inline-formula>6&#x0025; in case of 200&#x00A0;Gbps single channel and 1 Tbps multi channel 16QAM CO-OFDM transmission with blind carrier phase estimation. We also experimentally demonstrate the performance of the proposed algorithm against the standard pilot aided algorithm for the transmission of 120&#x00A0;Gbps 16QAM CO-OFDM at different noise levels.
ISSN:1943-0655

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