High Spectral Efficiency WDM Transmission Based on Hybrid Probabilistically and Geometrically Shaped 256QAM

Ding, Jianfeng; Sang, Bohan; Wang, Yanyi; Kong, Miao; Wang, Feng; Zhu, Bowen; Zhao, Li; Zhou, Wen; Yu, Jianjun

doi:10.1109/jlt.2021.3087919

Cited by 30 publications

(9 citation statements)

References 28 publications

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“…The coordinates of each constellation point can be obtained for modulation by Rs, Ns, and φs according to Eq. (6). Therefore, in the algorithm, each particle can be expressed as E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 7 ; 1 1 6 ; 2 8 6 P ¼ fN s ; R s ; φ s g:…”

Section: Principlementioning

confidence: 99%

“…Assuming the number of circles is 5, all three results point to the 4-circle distribution. Among them, PSO results in (3,6,10,13) distribution, WPA points to (2,8,9,13) distribution, and MPA points to (2,7,10,13) constellation.…”

Section: Mpamentioning

confidence: 99%

“…It has been shown in several papers that GS can be used in conjunction with other techniques, such as precoding, 4 to achieve new levels of system performance and applied in different communication systems 5 – 7 The performance of the optimized GS depends on the optimization principles and signal-to-noise ratio (SNR). The more common principles include maximizing the minimum Euclidean distance, maximizing the generalized mutual information (GMI), and minimizing the symbol error rate 8 .…”

Section: Introductionmentioning

confidence: 99%

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Performance enhanced geometrically shaped 32-ary quadrature amplitude modulation enabled by swarm intelligence algorithm

Yan

Liu

et al. 2023

Opt. Eng.

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The geometrically shaped 32-ary quadrature amplitude modulation (GS-32QAM) signal enabled by swarm intelligence algorithm is proposed in high-speed and long-haul coherent optical communication system. The geometric shaping (GS) is obtained by constructing a generic constellation optimization scheme applying particle swarm algorithm (PSO), wolf pack algorithm (WPA), and marine predator algorithm (MPA), respectively. The complexity of three algorithms applied to GS-32QAM is systematically analyzed, where MPA can obtain better search results with slightly higher complexity than PSO. The results show that the optimized constellation is significantly better than the uniform signal in terms of reducing bit error rate and increasing generalized mutual information (GMI). The maximum GMI gain of GS signal with PSO and WPA are both 0.25 bit∕sym, and the maximum GMI gain of GS signal with MPA is up to 0.3 bit∕sym. At the hard-decision forward error correlation limitation of 3.8 × 10 −3 , compared with uniform signal, the GS signal with PSO, WPA, and MPA can provide the optical signal-tonoise ratio gain of 1, 1.1, and 1.6 dB tolerance, respectively. In terms of data rate, compared with uniform signal, three GS signals can increase by 33, 36, and 43 Gbit∕s, respectively.

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Section: Principlementioning

confidence: 99%

Section: Mpamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance enhanced geometrically shaped 32-ary quadrature amplitude modulation enabled by swarm intelligence algorithm

Yan

Liu

et al. 2023

Opt. Eng.

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“…10 Considering the performance advantages of GS and PS, hybrid shaping (HS) can achieve a larger shaping gain, reduce the BER, and further approach the Shannon limit; thus it has drawn extensive attention. [11][12][13] A HS 14 scheme based on the generalized pairwise optimization algorithm was proposed. Results showed that hybrid PS/GS 256QAM had significant advantage in terms of data rate compared with R-256QAM.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of hybrid geometric-probabilistic shaped 8/12 quadrature amplitude modulation for coherent optical communication system

Liu

et al. 2023

Opt. Eng.

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.A hybrid shaping (HS) scheme based on geometric shaping (GS) and probabilistic shaping (PS) in a coherent optical communication system is proposed. A particle swarm optimization algorithm and Maxwell-Boltzmann distribution are employed to sequentially implement GS and PS. The results demonstrate that hybrid shaped 8/12-ary quadrature amplitude modulation (HS-8/12QAM) is superior to regular-8/12QAM (R-8/12QAM) in terms of reducing the bit error rate (BER) and increasing the generalized mutual information (GMI). HS-8QAM achieves a 2 dB optical signal-to-noise ratio (OSNR) gain and 0.45 bits / symbol GMI gain compared with R-8QAM. Meanwhile, HS-12QAM achieves 1.9 dB OSNR gain and 0.68 bits/symbol GMI gain compared with R-12QAM. In addition, HS-8/12QAM is better than R-8/12QAM in terms of transmission distance and data rate.

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“…We will brief on the research contents of those major national projects. Projects of optical fiber transmission on ultrahigh-speed optical fiber communications include single-channel Tb/s 1000 km transmission, − P bit/s WDM signals 1000 km transmission, − 100 Tb/s 1000 km transmission, − few-mode multicore transmission systems, − 17-core three-mode transmission systems, − hollow fibers, − amplifiers for new bands, − and few-mode amplifiers. − The following will elaborate on several representative projects.…”

Section: Introduction Of National Project Investmentmentioning

confidence: 99%

High-Speed Optical Fiber Communication in China

2022

ACS Photonics

Self Cite

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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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High Spectral Efficiency WDM Transmission Based on Hybrid Probabilistically and Geometrically Shaped 256QAM

Cited by 30 publications

References 28 publications

Performance enhanced geometrically shaped 32-ary quadrature amplitude modulation enabled by swarm intelligence algorithm

Performance enhanced geometrically shaped 32-ary quadrature amplitude modulation enabled by swarm intelligence algorithm

Performance analysis of hybrid geometric-probabilistic shaped 8/12 quadrature amplitude modulation for coherent optical communication system

High-Speed Optical Fiber Communication in China

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