Suppression of Fiber Nonlinearities and PMD in Coded-Modulation Schemes With Coherent Detection by Using Turbo Equalization

Author

Djordjevic, Ivan B. ; Minkov, Lyubomir L. ; Xu, Lei ; Wang, Ting

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA

Volume

1

Issue

6

fYear

2009

fDate

11/1/2009 12:00:00 AM

Firstpage

555

Lastpage

564

Abstract

We propose a maximum a posteriori probability (MAP) turbo equalizer based on the sliding-window multilevel Bahl-Cocke-Jelinek-Raviv algorithm. This scheme is suitable for simultaneous nonlinear and linear impairment mitigation in multilevel coded-modulation schemes with coherent detection. The proposed scheme employs large-girth quasicyclic LDPC codes as channel codes. We demonstrate the efficiency of this method in dealing with fiber nonlinearities by performing Monte Carlo simulations. In addition, we provide the experimental results that demonstrate the efficiency of this method in dealing with polarization mode dispersion. We also study the ultimate channel capacity limits, assuming an independent identically distributed source.

Keywords

Monte Carlo methods; channel capacity; equalisers; maximum likelihood decoding; modulation coding; optical fibre communication; optical fibre dispersion; optical fibre losses; optical fibre polarisation; parity check codes; turbo codes; wavelength division multiplexing; DWDM; MAP turbo equalizer; Monte Carlo simulations; PMD; channel capacity limitation; channel codes; coherent detection; fiber nonlinearities suppression; fiber-optic communication system; independent identically distributed source; large-girth quasicyclic LDPC codes; linear impairment mitigation; maximum a posteriori probability; multilevel BCJR algorithm; multilevel coded-modulation schemes; nonlinear impairment mitigation; polarization mode dispersion; sliding-window multilevel Bahl-Cocke-Jelinek-Raviv algorithm; turbo equalization; Coherent detection; Fiber nonlinearities; Fiber-optics communications; LDPC codes; Multilevel MAP detection; Multilevel coded modulation; Turbo equalization;

fLanguage

English

Journal_Title

Optical Communications and Networking, IEEE/OSA Journal of

Publisher

ieee

ISSN

1943-0620

Type

jour

DOI

10.1364/JOCN.1.000555

Filename

5308590