Performance Prediction of Nonbinary Forward Error Correction in Optical Transmission Experiments
Open Access
- 16 September 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 35 (4), 1015-1027
- https://doi.org/10.1109/jlt.2016.2609932
Abstract
In this paper, we compare different metrics to predict the error rate of optical systems based on nonbinary forward error correction (FEC). It is shown that an accurate metric to predict the performance of coded modulation based on nonbinary FEC is the mutual information. The accuracy of the prediction is verified in a detailed example with multiple constellation formats and FEC overheads, in both simulations and optical transmission experiments over a recirculating loop. It is shown that the employed FEC codes must be universal if performance prediction based on thresholds is used. A tutorial introduction into the computation of the thresholds from optical transmission measurements is also given.Keywords
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Funding Information
- CELTIC EUREKA through SENDATE-TANDEM (C2015/3-2)
- BMBF (16KIS0450K)
- Engineering and Physical Sciences Research Council, U.K.
- UNLOC (EP/J017582/1)
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