A constellation shaped 11-QAM signaling scheme based on geometric and probabilistic shaping

Rui Lv; Qi Zhang; Xiangjun Xin; Xishuo Wang; Feng Tian; Qinghua Tian; Ying Tao; Wei Zhang; Xia Sheng; Yongjun Wang; Jianxin Ren

doi:10.1016/j.optcom.2019.07.059

A constellation shaped 11-QAM signaling scheme based on geometric and probabilistic shaping

Rui Lv, Qi Zhang^*, Xiangjun Xin, Xishuo Wang, Feng Tian, Qinghua Tian, Ying Tao, Wei Zhang, Xia Sheng, Yongjun Wang, Jianxin Ren

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

A novel constellation shaped 11-QAM signaling scheme based on geometric shaping (GS) and probabilistic shaping (PS) is proposed in this paper. The 11-QAM signals are obtained by Huffman coding with an optimized 11-QAM constellation structure. Then the non-uniform 11-QAM signals are generated by bit-interleaved coded modulation (BICM), which can get a better performance of bit error ratio (BER) and approach the Shannon limit. An experiment of the proposed 11-QAM constellation is carried out to transmit data over 25-km standard single-mode fiber (SSMF) in the polarization division multiplexed coherent optical communication system. Results show that when the data rate reaches 33Gbps, the proposed GS/PS 11-QAM scheme respectively outperforms the traditional uniformly distributed star 8-QAM and the traditional PS 9-QAM by 2.9dB and 1.2dB in OSNR.

Original language	English
Pages (from-to)	450-456
Number of pages	7
Journal	Optics Communications
Volume	452
DOIs	https://doi.org/10.1016/j.optcom.2019.07.059
Publication status	Published - 1 Dec 2019
Externally published	Yes

Keywords

Constellation shaped 11-QAM
Geometric shaping
Probabilistic shaping

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10.1016/j.optcom.2019.07.059

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title = "A constellation shaped 11-QAM signaling scheme based on geometric and probabilistic shaping",

abstract = "A novel constellation shaped 11-QAM signaling scheme based on geometric shaping (GS) and probabilistic shaping (PS) is proposed in this paper. The 11-QAM signals are obtained by Huffman coding with an optimized 11-QAM constellation structure. Then the non-uniform 11-QAM signals are generated by bit-interleaved coded modulation (BICM), which can get a better performance of bit error ratio (BER) and approach the Shannon limit. An experiment of the proposed 11-QAM constellation is carried out to transmit data over 25-km standard single-mode fiber (SSMF) in the polarization division multiplexed coherent optical communication system. Results show that when the data rate reaches 33Gbps, the proposed GS/PS 11-QAM scheme respectively outperforms the traditional uniformly distributed star 8-QAM and the traditional PS 9-QAM by 2.9dB and 1.2dB in OSNR.",

keywords = "Constellation shaped 11-QAM, Geometric shaping, Probabilistic shaping",

author = "Rui Lv and Qi Zhang and Xiangjun Xin and Xishuo Wang and Feng Tian and Qinghua Tian and Ying Tao and Wei Zhang and Xia Sheng and Yongjun Wang and Jianxin Ren",

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year = "2019",

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doi = "10.1016/j.optcom.2019.07.059",

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T1 - A constellation shaped 11-QAM signaling scheme based on geometric and probabilistic shaping

AU - Lv, Rui

AU - Zhang, Qi

AU - Xin, Xiangjun

AU - Wang, Xishuo

AU - Tian, Feng

AU - Tian, Qinghua

AU - Tao, Ying

AU - Zhang, Wei

AU - Sheng, Xia

AU - Wang, Yongjun

AU - Ren, Jianxin

PY - 2019/12/1

Y1 - 2019/12/1

N2 - A novel constellation shaped 11-QAM signaling scheme based on geometric shaping (GS) and probabilistic shaping (PS) is proposed in this paper. The 11-QAM signals are obtained by Huffman coding with an optimized 11-QAM constellation structure. Then the non-uniform 11-QAM signals are generated by bit-interleaved coded modulation (BICM), which can get a better performance of bit error ratio (BER) and approach the Shannon limit. An experiment of the proposed 11-QAM constellation is carried out to transmit data over 25-km standard single-mode fiber (SSMF) in the polarization division multiplexed coherent optical communication system. Results show that when the data rate reaches 33Gbps, the proposed GS/PS 11-QAM scheme respectively outperforms the traditional uniformly distributed star 8-QAM and the traditional PS 9-QAM by 2.9dB and 1.2dB in OSNR.

AB - A novel constellation shaped 11-QAM signaling scheme based on geometric shaping (GS) and probabilistic shaping (PS) is proposed in this paper. The 11-QAM signals are obtained by Huffman coding with an optimized 11-QAM constellation structure. Then the non-uniform 11-QAM signals are generated by bit-interleaved coded modulation (BICM), which can get a better performance of bit error ratio (BER) and approach the Shannon limit. An experiment of the proposed 11-QAM constellation is carried out to transmit data over 25-km standard single-mode fiber (SSMF) in the polarization division multiplexed coherent optical communication system. Results show that when the data rate reaches 33Gbps, the proposed GS/PS 11-QAM scheme respectively outperforms the traditional uniformly distributed star 8-QAM and the traditional PS 9-QAM by 2.9dB and 1.2dB in OSNR.

KW - Constellation shaped 11-QAM

KW - Geometric shaping

KW - Probabilistic shaping

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VL - 452

SP - 450

EP - 456

JO - Optics Communications

JF - Optics Communications

ER -

A constellation shaped 11-QAM signaling scheme based on geometric and probabilistic shaping

Abstract

Keywords

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