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Conferences > ECEOC > 2022 > We3C > We3C.2
  • European Conference on Optical Communication (ECOC) 2022
  • Technical Digest Series (Optica Publishing Group, 2022),
  • paper We3C.2

DFE State-Tracking Demapper for Soft-Input FEC in 800G Data Center Interconnects

Kaiquan Wu, Gabriele Liga, Jeffrey Lee, Lotte Paulissen, Jamal Riani, and Alex Alvarado

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Abstract

A simple one-step state model is used to track the DFE error propagation for 4-PAM. The knowledge of DFE output states is used to improve LLR accuracy. Demapping via DFE state tracking outperforms bit-interleaving and precoding schemes for the 802.3ca LDPC code by 0.76 dB.

© 2022 The Author(s)

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