Staircase Codes: FEC for 100 Gb/s OTN
Benjamin P. Smith, Arash Farhood, Andrew Hunt, Frank R., Kschischang, John Lodge
TL;DR
This paper introduces staircase codes as a new FEC method for high-speed optical communications, demonstrating their superior performance and low error floor through FPGA simulations and analysis.
Contribution
It proposes a novel staircase code compatible with ITU-T G.709, with improved net coding gain and a detailed error floor analysis.
Findings
Net coding gain of 9.41 dB at 1E-15 error rate
Error floor at 4.0E-21
Improvement of 0.42 dB over existing codes
Abstract
Staircase codes, a new class of forward-error-correction (FEC) codes suitable for high-speed optical communications, are introduced. An ITU-T G.709-compatible staircase code with rate R=239/255 is proposed, and FPGA-based simulation results are presented, exhibiting a net coding gain (NCG) of 9.41 dB at an output error rate of 1E-15, an improvement of 0.42 dB relative to the best code from the ITU-T G.975.1 recommendation. An error floor analysis technique is presented, and the proposed code is shown to have an error floor at 4.0E-21.
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