Probabilistic Amplitude Shaping with Hard Decision Decoding and Staircase Codes

Abstract

We consider probabilistic amplitude shaping (PAS) as a means of increasing the spectral efficiency of fiber-optic communication systems. In contrast to previous works in the literature, we consider probabilistic shaping with hard decision decoding (HDD). In particular, we apply the PAS recently introduced by Böcherer \emph{et al.} to a coded modulation (CM) scheme with bit-wise HDD that uses a staircase code as the forward error correction code. We show that the CM scheme with PAS and staircase codes yields significant gains in spectral efficiency with respect to the baseline scheme using a staircase code and a standard constellation with uniformly distributed signal points. Using a single staircase code, the proposed scheme achieves performance within $0.57$--$1.44$ dB of the corresponding achievable information rate for a wide range of spectral efficiencies.

Published in IEEE/OSA Journal of Lightwave Technology, 2017

References in corpus (4)

• On Probabilistic Shaping of Quadrature Amplitude Modulation for the Nonlinear Fiber Channel
• Achievable Rates for Probabilistic Shaping
• High Throughput Probabilistic Shaping with Product Distribution Matching
• Achievable Information Rates for Coded Modulation with Hard Decision Decoding for Coherent Fiber-Optic Systems

Cited by in corpus (3)

• Adaptive Coded Modulation for IM/DD Free-Space Optical Backhauling: A Probabilistic Shaping Approach
• Performance Prediction Recipes for Optical Links
• On Product Codes with Probabilistic Amplitude Shaping for High-Throughput Fiber-Optic Systems