Probabilistic Shaping 44QAM Based on Many-to-One Mapping in DMT-WDM-PON

Zhenqi Cao; Yifan Chen; Xue Zhao; Lin Zhou; Ze Dong

doi:10.1109/LPT.2020.2987628

Probabilistic Shaping 44QAM Based on Many-to-One Mapping in DMT-WDM-PON

Zhenqi Cao, Yifan Chen, Xue Zhao, Lin Zhou^*, Ze Dong

^*Corresponding author for this work

Huaqiao University

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

14 Citations (Scopus)

Abstract

We introduce a probabilistic shaping (PS) 44-ary quadrature amplitude modulation (44QAM) based on many-to-one (MTO) mapping into a discrete multi-tone wavelength division multiplexing passive optical network (DMT-WDM-PON) with maximum shaping gain of 0.46 dB. A low-density parity-check (LDPC) based bit-interleaved coded modulation and iterative decoding system is proposed to generate and transmit the PS-44QAM DMT signal without any extra PS redundancy. An extrinsic information (EI) is iteratively used between LDPC decoder and PS demapper to retrieve the PS-44QAM DMT signal including overlapped/ambiguous symbols. The experimental results show that the PS-44QAM DMT signal with improved receiver power sensitivity and system fiber nonlinear effect tolerance can be obtained in the power splitter based WDM-PON. Thus, the corresponding system loss budget can be significantly enlarged in the optical distribution network for the purpose of serving more optical network units.

Original language	English
Article number	9064829
Pages (from-to)	639-642
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	32
Issue number	11
DOIs	https://doi.org/10.1109/LPT.2020.2987628
Publication status	Published - 1 Jun 2020
Externally published	Yes

Keywords

44QAM
DMT-WDM-PON
LDPC
Probabilistic shaping

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Cao, Z., Chen, Y., Zhao, X., Zhou, L., & Dong, Z. (2020). Probabilistic Shaping 44QAM Based on Many-to-One Mapping in DMT-WDM-PON. IEEE Photonics Technology Letters, 32(11), 639-642. Article 9064829. https://doi.org/10.1109/LPT.2020.2987628

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abstract = "We introduce a probabilistic shaping (PS) 44-ary quadrature amplitude modulation (44QAM) based on many-to-one (MTO) mapping into a discrete multi-tone wavelength division multiplexing passive optical network (DMT-WDM-PON) with maximum shaping gain of 0.46 dB. A low-density parity-check (LDPC) based bit-interleaved coded modulation and iterative decoding system is proposed to generate and transmit the PS-44QAM DMT signal without any extra PS redundancy. An extrinsic information (EI) is iteratively used between LDPC decoder and PS demapper to retrieve the PS-44QAM DMT signal including overlapped/ambiguous symbols. The experimental results show that the PS-44QAM DMT signal with improved receiver power sensitivity and system fiber nonlinear effect tolerance can be obtained in the power splitter based WDM-PON. Thus, the corresponding system loss budget can be significantly enlarged in the optical distribution network for the purpose of serving more optical network units.",

keywords = "44QAM, DMT-WDM-PON, LDPC, Probabilistic shaping",

author = "Zhenqi Cao and Yifan Chen and Xue Zhao and Lin Zhou and Ze Dong",

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AU - Chen, Yifan

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AU - Zhou, Lin

AU - Dong, Ze

PY - 2020/6/1

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N2 - We introduce a probabilistic shaping (PS) 44-ary quadrature amplitude modulation (44QAM) based on many-to-one (MTO) mapping into a discrete multi-tone wavelength division multiplexing passive optical network (DMT-WDM-PON) with maximum shaping gain of 0.46 dB. A low-density parity-check (LDPC) based bit-interleaved coded modulation and iterative decoding system is proposed to generate and transmit the PS-44QAM DMT signal without any extra PS redundancy. An extrinsic information (EI) is iteratively used between LDPC decoder and PS demapper to retrieve the PS-44QAM DMT signal including overlapped/ambiguous symbols. The experimental results show that the PS-44QAM DMT signal with improved receiver power sensitivity and system fiber nonlinear effect tolerance can be obtained in the power splitter based WDM-PON. Thus, the corresponding system loss budget can be significantly enlarged in the optical distribution network for the purpose of serving more optical network units.

AB - We introduce a probabilistic shaping (PS) 44-ary quadrature amplitude modulation (44QAM) based on many-to-one (MTO) mapping into a discrete multi-tone wavelength division multiplexing passive optical network (DMT-WDM-PON) with maximum shaping gain of 0.46 dB. A low-density parity-check (LDPC) based bit-interleaved coded modulation and iterative decoding system is proposed to generate and transmit the PS-44QAM DMT signal without any extra PS redundancy. An extrinsic information (EI) is iteratively used between LDPC decoder and PS demapper to retrieve the PS-44QAM DMT signal including overlapped/ambiguous symbols. The experimental results show that the PS-44QAM DMT signal with improved receiver power sensitivity and system fiber nonlinear effect tolerance can be obtained in the power splitter based WDM-PON. Thus, the corresponding system loss budget can be significantly enlarged in the optical distribution network for the purpose of serving more optical network units.

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Probabilistic Shaping 44QAM Based on Many-to-One Mapping in DMT-WDM-PON

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