# Wiener Filter for Short-Reach Fiber-Optic Links

arXiv: https://arxiv.org/abs/2004.12148 · HTML: https://mlsanity.com/paper/2004.12148/

## Key facts

- Cited by 2 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 25 Apr 2020.

## Built on by (most cited first, 2 of 2)

- [Unsupervised ANN-Based Equalizer and Its Trainable FPGA Implementation](https://mlsanity.com/paper/2304.06987/) (2023)
- [Blind and Channel-agnostic Equalization Using Adversarial Networks](https://mlsanity.com/paper/2209.07277/) (2022)

## Abstract (arXiv)

Analytic expressions are derived for the Wiener filter (WF), also known as the linear minimum mean square error (LMMSE) estimator, for an intensity-modulation/direct-detection (IM/DD) short-haul fiber-optic communication system. The link is purely dispersive and the nonlinear square-law detector (SLD) operates at the thermal noise limit. The achievable rates of geometrically shaped PAM constellations are substantially increased by taking the SLD into account as compared to a WF that ignores the SLD.