Feedforward Phase Noise Compensation for Intersymbol Interference Channels
Information Theory
2026-04-21 v1 Signal Processing
math.IT
Abstract
A non-iterative phase noise compensation method based on the sum-product algorithm (SPA) is applied to the outputs of intersymbol interference (ISI) channels. The outputs are modeled as independent Gaussian random variables, and the receiver applies mismatched processing with von Mises statistics. The performance is compared with that of linear minimum-mean-square-error filtering. The SPA achieves higher information rates at similar complexity for three channel types: ISI-free, standard single-mode fiber, and multipath channels with orthogonal frequency-division multiplexing.
Cite
@article{arxiv.2604.18391,
title = {Feedforward Phase Noise Compensation for Intersymbol Interference Channels},
author = {Alex Jäger and Gerhard Kramer},
journal= {arXiv preprint arXiv:2604.18391},
year = {2026}
}
Comments
Accepted at IEEE Intern. Symp. on Inf. Theory 2026