This tutorial reviews recent advances in probabilistic constellation shaping (PCS) with
particular focus on implementation perspectives. We analyze the complexity of several …

Probabilistic amplitude shaping (PAS) is a practical means to achieve a shaping gain in
optical fiber communication. However, PAS and shaping in general also affect the signal …

The impacts of limited bandwidth on the nonlinear transmission performance are
investigated by employing a truncated probabilistic shaped 64-ary quadrature amplitude …

Within a context of C+ L band transmission, this work proposes a design approach for
Raman pumps in hybrid fiber amplifiers (HFAs) with the goal of maximizing the total system …

In this paper, a nonlinearity-tolerant sphere shaping is proposed based on the parallel
bisection structure. Compared to enumerative sphere shaping (ESS), the bisection-based …

Metro transmissions requiring high capacity with low complexity are becoming more
appealing. Aiming to cope with the increasing traffic of metro transmissions, high-order …

We propose a novel 4D geometric shaping (GS) method based on multilevel coding (MLC)
for optical fiber communication systems that mitigates fiber non-linearity. To design non …

In this paper, multi-dimensional distribution matching (MDDM) based on bit-level shaping is
proposed to implement probabilistic shaping (PS) for high order modulation formats. MDDM …

Probabilistically shaped (PS) high-order quadrature amplitude modulation (QAM) signals
are attractive to coherent optical communication due to increased spectral efficiency …

In this paper, we propose a triplet-correlative perturbative nonlinearity compensation (TC-
PNC) scheme to compensate for intra-channel fiber nonlinear impairments. The complexity …