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  • Optical Fiber Communication Conference/National Fiber Optic Engineers Conference
  • OSA Technical Digest (CD) (Optica Publishing Group, 2008),
  • paper JWA53

Large Girth Low-Density Parity-Check Codes for Long-Haul High-Speed Optical Communications

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Abstract

An FEC scheme based on large girth LDPC codes is proposed. A girth-10 block-circulant LDPC code of rate 0.8 outperforms its turbo-product code counterpart by 0.95dB at BER of 10−10, on an AWGN channel. It provides the net effective coding gain of 10.95dB at BER of 10−12. In long-haul optical transmission at 40-Gb/s it provides at least 1.47dB improvement over corresponding turbo-product code.

© 2008 Optical Society of America

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