A Novel 64 QAM-OFDM Optical Access System Based on Bit Reconstruction

Rongzhen Xie; Di Wu; Qi Zhang; Haipeng Yao; Xishuo Wang; Xiangjun Xin; Feng Tian; Qinghua Tian; Fu Wang; Yongjun Wang; Leijing Yang; Jinkun Jiang

doi:10.3390/photonics10080879

Photonics (Jul 2023)

A Novel 64 QAM-OFDM Optical Access System Based on Bit Reconstruction

Rongzhen Xie,
Di Wu,
Qi Zhang,
Haipeng Yao,
Xishuo Wang,
Xiangjun Xin,
Feng Tian,
Qinghua Tian,
Fu Wang,
Yongjun Wang,
Leijing Yang,
Jinkun Jiang

Affiliations

Rongzhen Xie: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Di Wu: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Qi Zhang: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Haipeng Yao: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Xishuo Wang: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Xiangjun Xin: The Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China
Feng Tian: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Qinghua Tian: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Fu Wang: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Yongjun Wang: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Leijing Yang: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China
Jinkun Jiang: School of Electronic Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China

DOI: https://doi.org/10.3390/photonics10080879
Journal volume & issue: Vol. 10, no. 8
p. 879

Abstract

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This paper proposes a novel orthogonal frequency division multiplexing (OFDM) optical access scheme based on bit reconstruction. In this method, correlation is introduced into the data information of optical line terminals (OLT) through the logical coding circuits and partition mapping. Even after passing through the optical fibre channel, the strong correlation after bit reconstruction can still be used in the optical network unit (ONU) for reliable decoding. In the simulation experiments, a 60 Gbit/s bit reconstruction 64 quadrature amplitude modulation (QAM) OFDM signal was successfully transmitted over a 10/20 km single-mode fibre (SMF). The simulation results show that the proposed scheme can effectively achieve reliable transmission with gains of about 1.3 dB and 0.51 dB at a 20% soft decision-forward error correction (SD-FEC) threshold, respectively. The proposed scheme is a promising candidate for a next-generation passive optical network (NGPON) solution.

Published in Photonics

ISSN: 2304-6732 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: http://www.mdpi.com/journal/photonics

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