Maximum a Posteriori Probability Phase Recovery for 256-QAM Modulated Signals in Coherent Optical Communications

We propose a maximum a posteriori probability (MAP) estimator that can perform phase recovery symbol by symbol, with the optimum performance converging to Bayesian Cramér-Rao lower bound (BCRLB), especially for high-order modulated signals.

Authors

Xinwei Du (ORCID: https://orcid.org/0000-0002-1055-2832)
Pooi‐Yuen Kam (ORCID: https://orcid.org/0000-0001-5543-5034)
Qian Wang (ORCID: https://orcid.org/0000-0002-2812-609X)
Shuai Liu (ORCID: https://orcid.org/0000-0002-8966-7041)
Wenqiang Ma (ORCID: https://orcid.org/0000-0002-7796-3476)

Institutions

Beijing Normal-Hong Kong Baptist University (CN)
Hong Kong Baptist University (HK)
Chinese University of Hong Kong, Shenzhen (CN)
Zhejiang University of Technology (CN)

Publication Details

Published: 2025-06-29
DOI: https://doi.org/10.23919/oecc/psc62146.2025.11109607
Primary Topic: Optical Network Technologies
Type: article
Field-Weighted Citation Impact: 0.00

Funders

National Natural Science Foundation of China

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article

Maximum a Posteriori Probability Phase Recovery for 256-QAM Modulated Signals in Coherent Optical Communications

Xinwei Du, Pooi‐Yuen Kam, Qian Wang, Shuai Liu et al.

Jun 29, 2025

Optical Network Technologies

article

Maximum a Posteriori Probability Phase Recovery for 256-QAM Modulated Signals in Coherent Optical Communications

Xinwei Du, Pooi‐Yuen Kam, Qian Wang, Shuai Liu, Wenqiang Ma

June 29, 2025article en

Abstract

We propose a maximum a posteriori probability (MAP) estimator that can perform phase recovery symbol by symbol, with the optimum performance converging to Bayesian Cramér-Rao lower bound (BCRLB), especially for high-order modulated signals.

Beijing Normal-Hong Kong Baptist University (CN), Hong Kong Baptist University (HK), Chinese University of Hong Kong, Shenzhen (CN), Zhejiang University of Technology (CN)

National Natural Science Foundation of China

Affordable and clean energy

Openalex Percentile: Top 80%

Optical Network Technologies

DOI Source OpenAlex

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Maximum a Posteriori Probability Phase Recovery for 256-QAM Modulated Signals in Coherent Optical Communications — Xinwei Du, Pooi‐Yuen Kam, et al. · (2025) | TGRS Research Map | TGRS