Signal Constellation Design for Cross-Phase Modulation Dominated Channels

Author

Tao Liu ; Djordjevic, Ivan B.

Author_Institution

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

Volume

7

Issue

4

fYear

2015

fDate

Aug. 2015

Firstpage

1

Lastpage

8

Abstract

In this paper, we introduce an optimal signal constellation design algorithm suitable for wavelength-division-multiplexed systems dominated by cross-phase modulation (XPM), which is called XPM-OSCD. Additionally, a corresponding demodulation scheme is also proposed in order to better compensate for the nonlinear phase errors. In this scheme, the cumulative log-likelihood function is used as the optimization criterion. The signal constellations obtained by this algorithm significantly outperform conventional quadrature amplitude modulation (QAM).

Keywords

optical information processing; optical modulation; phase modulation; wavelength division multiplexing; cross-phase modulation dominated channels; cumulative log-likelihood function; demodulation scheme; nonlinear phase errors; signal constellation design; wavelength-division-multiplexed systems; Algorithm design and analysis; Channel models; Constellation diagram; Demodulation; Optical fibers; Wavelength division multiplexing; Microwave photonics communications; block-interleaved coded modulation (BICM); cross-phase modulation; demodulator; optimal signal constellation; wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2453880

Filename

7163443