Novel Blind Equalizer for Coherent DP-BPSK Transmission Systems: Theory and Experiment

Author

Pincemin, Erwan ; Brochier, Nicolas ; Selmi, Mbarka ; Chahabi, Omid Zia ; Ciblat, Philippe ; Jaouen, Yves

Author_Institution

Dept. of Orange Labs. Network, France Telecom, Lannion, France

Volume

25

Issue

18

fYear

2013

fDate

Sept.15, 2013

Firstpage

1835

Lastpage

1838

Abstract

Adaptive blind equalization based on modulus algorithm is very efficient to carry out polarization separation and inter-symbol interference compensation in a coherent dual-polarization quaternary-phase-shift-keying transmission system. Its performance is, however, very poor when coherent dual-polarization binary-phase-shift-keying (BPSK) modulation is considered. In this letter, we propose a new blind equalizer adapted to any PSK constellation and we theoretically show its convergence. Experimental BER measurements and convergence analysis are performed in a 40 Gbps coherent dual-polarization BPSK system under different physical impairments. We show that our equalizer outperforms existing blind algorithms.

Keywords

blind equalisers; compensation; convergence of numerical methods; error statistics; light polarisation; phase shift keying; BER measurements; BPSK modulation; PSK constellation; adaptive blind equalization; coherent DP-BPSK transmission systems; coherent dual-polarization quaternary-phase-shift-keying transmission system; convergence analysis; inter-symbol interference compensation; modulus algorithm; novel blind equalizer; polarization separation; Algorithm design and analysis; Binary phase shift keying; Bit error rate; Blind equalizers; Optical noise; Signal to noise ratio; Coherent optical communications; binary-phase shift-keying; blind equalization; constant modulus algorithm;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2277604

Filename

6579680