We propose a multiplication-free K-state reserved complex maximum-likelihood-sequence-estimation (MLSE) to mitigate asymmetrical filtering impairments in digital-subcarrier-multiplexing transmissions. A required optical-to-noise ratio of 1.63dB over the conventional real MLSE is obtained after transmitting 90 GBaud DSCM DP-16QAM signal over 14 WSSs without multiplications.
@article{arxiv.2507.23351,
title = {Asymmetrical Filtering Impairments Mitigation for Digital- Subcarrier-Multiplexing Transmissions Enabled by Multiplication-free K-State Reserved Complex MLSE},
author = {Hexun Jiang and Zhuo Wang and Chengbo Li and Weiqin Zhou and Shuai Wei and Yicong Tu and Heng Zhang and Wenjing Yu and Yongben Wang and Yong Chen and Ye Zhao and Da Hu and Lei Shi},
journal= {arXiv preprint arXiv:2507.23351},
year = {2025}
}
Comments
5 pages, 5 figures, European Conference on Optical Communication 2025