A probabilistic shaping 12-QAM scheme based on set-partitioned two-polarization

Xin Liu; Qi Zhang; Xiangjun Xin; Feng Tian; Wei Zhang; Qinghua Tian; Yongjun Wang; Leijing Yang; Ying Tao; Dong Chen

doi:10.1117/12.2548530

20 December 2019 A probabilistic shaping 12-QAM scheme based on set-partitioned two-polarization

Xin Liu, Qi Zhang, Xiangjun Xin, Feng Tian, Wei Zhang, Qinghua Tian, Yongjun Wang, Leijing Yang, Ying Tao, Dong Chen

Author Affiliations +

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112092O (2019) https://doi.org/10.1117/12.2548530
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

A Probabilistic Shaping (PS) 12-QAM scheme based on Set-Partitioned (SP) Two-Polarization (TP) is proposed to improve the effectiveness and reliability of Probabilistic Shaping 12-QAM (PS-12QAM). In this scheme, the Uniform 12- QAM constellation points are divided into two set partitions, and two polarization states are used to broaden the dimension between two set partitions. Moreover, the system capacity is further approached to Shannon limit by Probabilistic Shaping. The simulations on PS-8QAM, PS-12QAM, PS-16QAM and Probabilistic Shaping Set-Partitioned Two-Polarization 12- QAM (PS-SP-TP-12QAM) have been completed. The results show that, compared with PS-12QAM, the Euclidean distance between adjacent constellation points in PS-SP-TP-12QAM scheme is significantly optimized, and the bit error rate (BER) of this scheme is greatly improved up to 0.5dB. Compared with PS-8QAM and PS-16QAM, it brings a better balance between effectiveness and reliability performance.

Citation Download Citation

Xin Liu, Qi Zhang, Xiangjun Xin, Feng Tian, Wei Zhang, Qinghua Tian, Yongjun Wang, Leijing Yang, Ying Tao, and Dong Chen "A probabilistic shaping 12-QAM scheme based on set-partitioned two-polarization", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112092O (20 December 2019); https://doi.org/10.1117/12.2548530

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KEYWORDS

Reliability

Polarization

Data communications

Numerical simulations

Modulators

Quadrature amplitude modulation

Signal to noise ratio

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