LDPC-coded DFT-Spread DMT signal transmission employing probabilistic shaping 16/32QAM for optical interconnection

Xinxing Wu; Dongdong Zou; Ze Dong; Xue Zhao; Yifan Chen; Fan Li

doi:10.1364/OE.27.009821

LDPC-coded DFT-Spread DMT signal transmission employing probabilistic shaping 16/32QAM for optical interconnection

Xinxing Wu, Dongdong Zou, Ze Dong, Xue Zhao, Yifan Chen, Fan Li

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

16 Citations (Scopus)

Abstract

The generation and transmission of a 150-Gb/s discrete-Fourier-transform spread (DFT-spread) probabilistic shaping (PS) 16QAM discrete multi-tone (DMT) signal with low-density parity-check (LDPC)-coded modulation for optical interconnection are proposed and experimentally demonstrated for the first time. The PS-16QAM symbols are reshaped from 32-QAM symbols based on the near-Gaussian distribution. The maximal shaping gain of around 0.5 dB is obtained for the PS-16QAM compared with the traditional unshaped one. Compared with the standard 16QAM, the proposed PS-16QAM DMT signal shows superior receiver sensitivity to provide abundant system loss budget for leveraging the legacy. Jointly iterative decoding algorithms based LDPC is utilized for PS de-mapping and inherent overlapped symbols identification in PS. In addition, the joint applications of DFT-spread and PS techniques can significantly improve received power sensitivity (RPS).

Original language	English
Pages (from-to)	9821-9828
Number of pages	8
Journal	Optics Express
Volume	27
Issue number	7
DOIs	https://doi.org/10.1364/OE.27.009821
Publication status	Published - 1 Apr 2019
Externally published	Yes

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title = "LDPC-coded DFT-Spread DMT signal transmission employing probabilistic shaping 16/32QAM for optical interconnection",

abstract = "The generation and transmission of a 150-Gb/s discrete-Fourier-transform spread (DFT-spread) probabilistic shaping (PS) 16QAM discrete multi-tone (DMT) signal with low-density parity-check (LDPC)-coded modulation for optical interconnection are proposed and experimentally demonstrated for the first time. The PS-16QAM symbols are reshaped from 32-QAM symbols based on the near-Gaussian distribution. The maximal shaping gain of around 0.5 dB is obtained for the PS-16QAM compared with the traditional unshaped one. Compared with the standard 16QAM, the proposed PS-16QAM DMT signal shows superior receiver sensitivity to provide abundant system loss budget for leveraging the legacy. Jointly iterative decoding algorithms based LDPC is utilized for PS de-mapping and inherent overlapped symbols identification in PS. In addition, the joint applications of DFT-spread and PS techniques can significantly improve received power sensitivity (RPS).",

author = "Xinxing Wu and Dongdong Zou and Ze Dong and Xue Zhao and Yifan Chen and Fan Li",

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T1 - LDPC-coded DFT-Spread DMT signal transmission employing probabilistic shaping 16/32QAM for optical interconnection

AU - Wu, Xinxing

AU - Zou, Dongdong

AU - Dong, Ze

AU - Zhao, Xue

AU - Chen, Yifan

AU - Li, Fan

PY - 2019/4/1

Y1 - 2019/4/1

N2 - The generation and transmission of a 150-Gb/s discrete-Fourier-transform spread (DFT-spread) probabilistic shaping (PS) 16QAM discrete multi-tone (DMT) signal with low-density parity-check (LDPC)-coded modulation for optical interconnection are proposed and experimentally demonstrated for the first time. The PS-16QAM symbols are reshaped from 32-QAM symbols based on the near-Gaussian distribution. The maximal shaping gain of around 0.5 dB is obtained for the PS-16QAM compared with the traditional unshaped one. Compared with the standard 16QAM, the proposed PS-16QAM DMT signal shows superior receiver sensitivity to provide abundant system loss budget for leveraging the legacy. Jointly iterative decoding algorithms based LDPC is utilized for PS de-mapping and inherent overlapped symbols identification in PS. In addition, the joint applications of DFT-spread and PS techniques can significantly improve received power sensitivity (RPS).

AB - The generation and transmission of a 150-Gb/s discrete-Fourier-transform spread (DFT-spread) probabilistic shaping (PS) 16QAM discrete multi-tone (DMT) signal with low-density parity-check (LDPC)-coded modulation for optical interconnection are proposed and experimentally demonstrated for the first time. The PS-16QAM symbols are reshaped from 32-QAM symbols based on the near-Gaussian distribution. The maximal shaping gain of around 0.5 dB is obtained for the PS-16QAM compared with the traditional unshaped one. Compared with the standard 16QAM, the proposed PS-16QAM DMT signal shows superior receiver sensitivity to provide abundant system loss budget for leveraging the legacy. Jointly iterative decoding algorithms based LDPC is utilized for PS de-mapping and inherent overlapped symbols identification in PS. In addition, the joint applications of DFT-spread and PS techniques can significantly improve received power sensitivity (RPS).

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LDPC-coded DFT-Spread DMT signal transmission employing probabilistic shaping 16/32QAM for optical interconnection

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