Title :
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
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2013.2263831
