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Optical Metro Networks and Short-Haul Systems VIII
In state-of-the-art fiber-optics communication systems the fixed forward error correction (FEC) and constellation size are employed. While it is important to closely approach the Shannon limit by using turbo product codes (TPC) and lowdensity parity-check (LDPC) codes with soft-decision decoding (SDD) algorithm; rate-adaptive techniques, which enable increased information rates over short links and reliable transmission over long links, are likely to become more important with ever-increasingdoi:10.1117/12.2214884 fatcat:dbrmqmdvbjbj7b6vetnxnlrqda