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Conferences > CLEO_SI > 2015 > SW1M > SW1M.3

Phase Noise-Robust LLR Calculation with Linear/Bilinear Transform for LDPC-Coded Coherent Communications

Toshiaki Koike-Akino, David S. Millar, Keisuke Kojima, and Kieran Parsons

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Abstract

We propose a modified log-likelihood ratio (LLR) calculation for an LDPC decoder to be robust against residual phase noise at the demodulator. The proposed scheme is based on a linear/bilinear transform offers 1 ~ 2dB gain in the presence of large phase noise.

© 2015 Optical Society of America

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