Improved decision directed carrier phase estimation for nonlinearity mitigation in 16-QAM systems

Pakala L, Schmauß B (2014)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2014

Publisher: Institute of Electrical & Electronics Engineers (IEEE)

DOI: 10.1109/ICTON.2014.6876407

Abstract

We propose and numerically investigate an improved decision directed (IDD) carrier phase estimation (CPE) to mitigate fiber nonlinearity in 16 quadrature amplitude modulation (QAM) coherent transmission systems. The proposed IDD-CPE algorithm is derived based on a two stage approach and compared with other CPE algorithms namely, the pre-decision directed (PDD) CPE and the decision directed (DD) phase locked loop (PLL). By exploiting the symbol position information in the I-Q plane and a euclidean distance measure, the proposed IDD-CPE algorithm outperforms the PDD-CPE and DD-PLL methods, exhibiting an optimal performance at signal launch power of 0 dBm and at optical signal to noise ratios (OSNRs) greater than 28dB, where no bit errors are detected.

Authors with CRIS profile

Lalitha Pakala Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik Bernhard Schmauß Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik

How to cite

APA:

Pakala, L., & Schmauß, B. (2014). Improved decision directed carrier phase estimation for nonlinearity mitigation in 16-QAM systems. In Proceedings of the International Conference on Transparent Optical Networks (ICTON). Institute of Electrical & Electronics Engineers (IEEE).

MLA:

Pakala, Lalitha, and Bernhard Schmauß. "Improved decision directed carrier phase estimation for nonlinearity mitigation in 16-QAM systems." Proceedings of the International Conference on Transparent Optical Networks (ICTON) Institute of Electrical & Electronics Engineers (IEEE), 2014.

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