IEEE Communications Magazine
Coherent 100 Gb/s PM-QPSK field trial
IEEE Communications Magazine
Error correcting coding for OTN
IEEE Communications Magazine
Reconfigurable architecture and automated design flow for rapid FPGA-based LDPC code emulation
Proceedings of the ACM/SIGDA international symposium on Field Programmable Gate Arrays
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The role of forward error correction has become of critical importance in fiber optic communications, as backbone networks increase in speed to 40 and 100 Gb/s, particularly as poor optical-signal-to-noise environments are encountered. Such environments become more commonplace in higher-speed environments, as more optical amplifiers are deployed in networks. Many generations of FEC have been implemented, including block codes and concatenated codes. Developers now have options to consider hard-decision and soft-decision codes. This article describes the advantages of each type in particular transmission environments.