An experimental comparison of coded modulation strategies for 100 Gb/s transceivers

E. Sillekens, A. Alvarado, C. Okonkwo, B.C. Thomsen

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4 Citaten (Scopus)
102 Downloads (Pure)

Samenvatting

Coded modulation is a key technique to increase the spectral efficiency of coherent optical communication systems. Two popular strategies for coded modulation are turbo trellis-coded modulation (TTCM) and bit-interleaved coded modulation (BICM) based on low-density parity-check (LDPC) codes. Although BICM LDPC is suboptimal, its simplicity makes it very popular in practice. In this work, we compare the performance of TTCM and BICM LDPC using information-theoretic measures. Our information-theoretic results show that for the same overhead and modulation format only a very small penalty (less than 0.1 dB) is to be expected when an ideal BICM LDPC scheme is used. However, the results obtained for the coded modulation schemes implemented in this paper show that the TTCM outperforms BICM LDPC by a larger margin. For a 1000 km transmission at 100 Gbit/s, the observed gain was 0.4 dB.
Originele taal-2Engels
Pagina's (van-tot)5689 - 5697
Aantal pagina's9
TijdschriftJournal of Lightwave Technology
Volume34
Nummer van het tijdschrift24
DOI's
StatusGepubliceerd - 14 nov 2016

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  • cs.IT
  • math.IT

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