Transparent Carrier Phase Recovery Based on an Artificial Neural Network

IF 2.5 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-06-23 DOI:10.1109/LPT.2025.3582338

Tobias Blatter;Chenrui Xu;Serge Kaufmann;Laurenz Kulmer;Yannik Horst;Juerg Leuthold

引用次数: 0

Abstract

Carrier phase recovery (CPR) is crucial in coherent optical communication, ensuring reliable data transmission. This letter proposes a novel artificial neural network (ANN)- based CPR algorithm. It achieves modulation-format transparency and robust phase recovery across a wide range of signal-to-noise ratios (SNRs) at reduced computational cost compared to a two-stage blind phase search (2S-BPS). Simulations and experiments show that the proposed algorithm outperforms 2S-BPS at low SNRs with shaped quadrature amplitude modulation and surpasses universal carrier phase estimation (U-CPE) and principal component phase estimation (PCPE) with shaped formats at high SNRs. While a 3% pilot-only CPR achieves the best performance at low SNR at lowest computational cost, it does so at the cost of reduced throughput at high SNRs.

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基于人工神经网络的透明载波相位恢复

载波相位恢复是相干光通信中保证数据可靠传输的关键技术。本文提出了一种新的基于人工神经网络（ANN）的CPR算法。与两级盲相位搜索（2S-BPS）相比，它在更大的信噪比（SNRs）范围内实现了调制格式的透明性和稳健的相位恢复，并且降低了计算成本。仿真和实验表明，该算法在低信噪比下优于2S-BPS，在高信噪比下优于通用载波相位估计（U-CPE）和主成分相位估计（PCPE）。虽然3%的仅导频CPR在低信噪比下以最低的计算成本实现了最佳性能，但在高信噪比下却以降低吞吐量为代价。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.