作者: P. Vijay Kumar , Moe Z. Win , Hsiao-Feng Lu , Costas N. Georghiades
DOI: 10.1016/B978-012395173-1/50017-7
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摘要: Publisher Summary This chapter introduces the coding theory and discusses its application to lightwave systems. An overview of forward error correction (FEC) codes relevant for establishing reliable communication over fiber-optic channel has been provided in chapter. The also principles underlying various FEC imperfections role overcoming these imperfections. gain an code refers a quantitative measure energy savings resulting from use code. three classes include convolutional, turbo, low–density parity–check (LDPC) codes. These possess efficient, low-complexity, soft–decision decoding algorithm. Various used on optical gains by are explored. concludes with critical survey recent literature applications systems, where provides substantial system gains.