Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 23, Issue 20, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2011.2162725
Keywords
Error correction codes; fiber optics; mutual information; optical fiber communication
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We investigate the feasibility of using hard-decision bit error rates or, alternatively, mutual information, both measured before a soft input forward error correction decoder, as a means to estimate performance after soft-decision decoding. Both methods are compared based on a large set of measurement data. We conclude that mutual information seems to be the more reliable measure to estimate soft-decision FEC performance.
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