# Adaptive Turbo Equalization of Probabilistically Shaped Constellations

## TL;DR

This paper explores adaptive turbo equalization for probabilistically shaped constellations in fiber communication, demonstrating significant potential for extending transmission reach by combining advanced techniques.

## Contribution

It introduces the first investigation into fiber nonlinearity compensation using adaptive turbo equalization with probabilistic shaping.

## Key findings

- Potential for over 100% transmission reach extension
- Effective combination of probabilistic shaping and digital backpropagation
- Enhanced nonlinearity compensation in fiber optics

## Abstract

Fiber nonlinearity compensation of probabilistically shaped constellations with adaptive turbo equalization is investigated for the first time. Potential for more than 100% transmission reach extension is demonstrated by combining probabilistic shaping, single-channel digital backpropagation, and adaptive turbo equalization.