TR2015-039

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

    •  Koike-Akino, T., Millar, D.S., Kojima, K., Parsons, K., "Phase Noise-Robust LLR Calculation with Linear/Bilinear Transform for LDPC-Coded Coherent Communications", Conference on Lasers and Electro-Optics (CLEO), DOI: 10.1364/​CLEO_Sl.2015.SW1M.3, May 2015, pp. 1-2.
      BibTeX TR2015-039 PDF
      • @inproceedings{Koike-Akino2015may2,
      • author = {Koike-Akino, T. and Millar, D.S. and Kojima, K. and Parsons, K.},
      • title = {Phase Noise-Robust LLR Calculation with Linear/Bilinear Transform for LDPC-Coded Coherent Communications},
      • booktitle = {Conference on Lasers and Electro-Optics (CLEO)},
      • year = 2015,
      • pages = {1--2},
      • month = may,
      • doi = {10.1364/CLEO_Sl.2015.SW1M.3},
      • isbn = {978-1-55752-968.8},
      • url = {https://www.merl.com/publications/TR2015-039}
      • }
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  • Research Areas:

    Communications, Signal Processing

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.

 

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