Quasi-Pilot Aided Phase Noise Estimation for Coherent Optical OFDM Systems

Author

Son Thai Le ; Kanesan, T. ; Giacoumidis, E. ; Doran, N.J. ; Ellis, A.D.

Author_Institution

Sch. of Eng. & Appl. Sci., Aston Inst. of Photonic Technol., Aston Univ., Birmingham, UK

Volume

26

Issue

5

fYear

2014

fDate

1-Mar-14

Firstpage

504

Lastpage

507

Abstract

In this letter, a novel phase noise estimation scheme has been proposed for coherent optical orthogonal frequency division multiplexing systems, the quasi-pilot-aided method. In this method, the phases of transmitted pilot subcarriers are deliberately correlated to the phases of data subcarriers. Accounting for this correlation in the receiver allows the required number of pilots needed for a sufficient estimation and compensation of phase noise to be reduced by a factor of 2 in comparison with the traditional pilot-aided phase noise estimation method. We carried out numerical simulation of a 40 Gb/s single polarization transmission system, and the outcome of the investigation indicates that by applying quasi-pilot-aided phase estimation, only four pilot subcarriers are needed for effective phase noise compensation.

Keywords

OFDM modulation; light polarisation; optical receivers; phase estimation; phase noise; coherent optical OFDM system; coherent optical orthogonal frequency division multiplexing system; data subcarrier; phase noise compensation; polarization transmission system; quasi-pilot aided phase noise estimation; receiver; Adaptive optics; Estimation; Laser noise; OFDM; Optical noise; Phase noise; Signal to noise ratio; Coherent; orthogonal frequency division multiplexing; phase estimation; phase noise;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2301176

Filename

6716008