Blind Equalization in Optical Communications Using Independent Component Analysis

Author

Nafta, A. ; Johannisson, Pontus ; Shtaif, Mark

Author_Institution

Dept. of Phys. Electron., Tel Aviv Univ., Tel Aviv, Israel

Volume

31

Issue

12

fYear

2013

fDate

15-Jun-13

Firstpage

2043

Lastpage

2049

Abstract

We propose a multi-tap independent component analysis (ICA) scheme for blind equalization and phase recovery in coherent optical communication systems. The proposed algorithm is described and evaluated in the cases of QPSK and 16-QAM transmission. Comparison with CMA equalization shows similar performance in the case of QPSK and an advantage for the ICA equalizer in the case of 16-QAM. The equalization scheme was evaluated in a multi-span optical communications system impaired by both polarization mode dispersion (PMD) and polarization dependent loss (PDL).

Keywords

blind equalisers; independent component analysis; optical fibre communication; optical fibre polarisation; quadrature amplitude modulation; quadrature phase shift keying; 16-QAM transmission; CMA equalization; ICA equalizer; QPSK; blind equalization; coherent optical communication systems; independent component analysis; phase recovery; polarization dependent loss; polarization mode dispersion; quadrature phase shift keying; Algorithm design and analysis; Blind equalizers; Optical fiber communication; Phase shift keying; Signal to noise ratio; Vectors; Coherent communication; equalization; independent component analysis (ICA); optical fiber communication;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2013.2263831

Filename

6517209