DMT Transmission in Short-Reach Optical Interconnection Employing a Novel Bit-Class Probabilistic Shaping Scheme

Dong, Ze; Chen, Yifan; Zou, Dongdong; Zhao, Xue; Zhou, Lin; Li, Fan

doi:10.1109/jlt.2020.3025449

Cited by 22 publications

(3 citation statements)

References 25 publications

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“…Reference compared PS and hybrid QAM in 400 G ultralong-haul coherent optical fiber transmission. The required OSNR for the 403 Gbps/carrier PS-64QAM signal at the SD-FEC threshold with 27.5% overhead is around 22.7 dB, which obtains around 1.5 dB OSNR gain compared with hybrid 32/64QAM with the same bit rate.…”

Section: Research Progress On Long-distance Transmissionmentioning

confidence: 99%

“…How to map the origin binary bit sequence to the symbols of a specified probability distribution has a significant impact on the performance and computational complexity of the PS transmission system. To solve the ambiguity issue and excessive calculation complexity of the intensively studied bit-to-symbol PS mapping schemes, such as many-to-one (MTO) mapping, arithmetic distribution matching (ADM), and constant composition distribution matching (CCDM), , a brand PS scheme based on the bit-weighted distribution matching (BWDM) is proposed in ref . The specific probability distribution can be achieved by utilizing the bit weight intervention (BWI) on the short code block in BWDM.…”

Section: Research Progress On Long-distance Transmissionmentioning

confidence: 99%

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High-Speed Optical Fiber Communication in China

2022

ACS Photonics

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In the past decade, China has made great investments in studying photonics and photocommunication with larger communication capacity, better performance, and lower cost. After years of heavy investment, great progress has been made in academic research, manufacturing capabilities, and optical network scale. The number of papers written and published by researchers in China in the world’s top optical fiber communication conferences has increased year by year, accounting for about 10% of the total number of papers. These high-level articles show that scientists in China have made great strides in photonics research in devices, systems, and networks. On the other hand, photonics industrialization in China is getting more competitive with its large market scale and strong production capacity.

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Section: Research Progress On Long-distance Transmissionmentioning

confidence: 99%

Section: Research Progress On Long-distance Transmissionmentioning

confidence: 99%

High-Speed Optical Fiber Communication in China

2022

ACS Photonics

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“…In this trend, an optical transmission system with high spectral efficiency is required to accommodate a higher transmission rate. There are numerous strategies to significantly increase transmission rate, among which advanced coding and modulation, multi-dimensional multiplexing and forward error correction (FEC) coding play a vital role [3,4].…”

Section: Introductionmentioning

confidence: 99%

K-means Cluster Algorithm Applied for Geometric Shaping Based on Iterative Polar Modulation in Inter-Data Centers Optical Interconnection

et al. 2021

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The demand of delivering various services is driving inter-data centers optical interconnection towards 400 G/800 G, which calls for increasing capacity and spectrum efficiency. The aim of this study is to effectively increase capacity while also improving nonlinear noise anti-interference. Hence, this paper presents a state-of-the-art scheme that applies the K-means cluster algorithm in geometric shaping based on iterative polar modulation (IPM). A coherent optical communication simulation system was established to demonstrate the performance of our proposal. The investigation reveals that the gap between IPM and Shannon limit has significantly narrowed in terms of mutual information. Moreover, when compared with IPM and QAM using the blind phase searching under the same order at HD-FEC threshold, the IPM-16 using the K-means algorithm achieves 0.9 dB and 1.7 dB gain; the IPM-64 achieves 0.3 dB and 1.1 dB gain, and the IPM-256 achieves 0.4 dB and 0.8 dB gain. The robustness of nonlinear noise and high capacity enable this state-of-the-art scheme to be used as an optional modulation format not only for inter-data centers optical interconnection but also for any high speed, long distance optical fiber communication system.

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