OCT-precoding combined with LDPC-coding scheme for 128 QAM MB-OFDM UWBOF system

Changqing Xiang; Xi Yang; Xiaojun Zhu; Qiong He; Renmin Zhang; Zhiyang Xiang

doi:10.1155/2020/1540540

OCT-precoding combined with LDPC-coding scheme for 128 QAM MB-OFDM UWBOF system

Changqing Xiang
, Xi Yang^*
, Xiaojun Zhu
, Qiong He
, Renmin Zhang
, Zhiyang Xiang

^*此作品的通讯作者

Jishou University
Jiangxi University of Science and Technology

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

In this paper, we proposed a coding scheme based on orthogonal cyclic transpose (OCT) precoding combined with low-density parity check (LDPC) code to improve the transmission performance of 128-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band over fiber (128 QAM MB-OFDM UWBoF) system. The proposed scheme could not only improve the performance of the system but also average the signal-to-noise ratio (SNR) of subcarriers and reduce the difference among subchannels in practical application. The simulation results showed that compared with the traditional scheme, the receiver performance of this scheme was improved by 2.7 dB when the LDPC-coding rate was 87.5% through 70 km standard single mode fiber (SSMF) transmission and the bit error rate (BER) was 3.8 × 10⁻³. Besides, the constellation distribution was more convergent and uniform.

源语言	英语
文章编号	1540540
期刊	Advances in Condensed Matter Physics
卷	2020
DOI	https://doi.org/10.1155/2020/1540540
出版状态	已出版 - 2020
已对外发布	是

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title = "OCT-precoding combined with LDPC-coding scheme for 128 QAM MB-OFDM UWBOF system",

abstract = "In this paper, we proposed a coding scheme based on orthogonal cyclic transpose (OCT) precoding combined with low-density parity check (LDPC) code to improve the transmission performance of 128-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band over fiber (128 QAM MB-OFDM UWBoF) system. The proposed scheme could not only improve the performance of the system but also average the signal-to-noise ratio (SNR) of subcarriers and reduce the difference among subchannels in practical application. The simulation results showed that compared with the traditional scheme, the receiver performance of this scheme was improved by 2.7 dB when the LDPC-coding rate was 87.5\% through 70 km standard single mode fiber (SSMF) transmission and the bit error rate (BER) was 3.8 × 10−3. Besides, the constellation distribution was more convergent and uniform.",

author = "Changqing Xiang and Xi Yang and Xiaojun Zhu and Qiong He and Renmin Zhang and Zhiyang Xiang",

note = "Publisher Copyright: {\textcopyright} 2020 Changqing Xiang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.",

year = "2020",

doi = "10.1155/2020/1540540",

language = "英语",

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journal = "Advances in Condensed Matter Physics",

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T1 - OCT-precoding combined with LDPC-coding scheme for 128 QAM MB-OFDM UWBOF system

AU - Xiang, Changqing

AU - Yang, Xi

AU - Zhu, Xiaojun

AU - He, Qiong

AU - Zhang, Renmin

AU - Xiang, Zhiyang

N1 - Publisher Copyright: © 2020 Changqing Xiang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

PY - 2020

Y1 - 2020

N2 - In this paper, we proposed a coding scheme based on orthogonal cyclic transpose (OCT) precoding combined with low-density parity check (LDPC) code to improve the transmission performance of 128-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band over fiber (128 QAM MB-OFDM UWBoF) system. The proposed scheme could not only improve the performance of the system but also average the signal-to-noise ratio (SNR) of subcarriers and reduce the difference among subchannels in practical application. The simulation results showed that compared with the traditional scheme, the receiver performance of this scheme was improved by 2.7 dB when the LDPC-coding rate was 87.5% through 70 km standard single mode fiber (SSMF) transmission and the bit error rate (BER) was 3.8 × 10−3. Besides, the constellation distribution was more convergent and uniform.

AB - In this paper, we proposed a coding scheme based on orthogonal cyclic transpose (OCT) precoding combined with low-density parity check (LDPC) code to improve the transmission performance of 128-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band over fiber (128 QAM MB-OFDM UWBoF) system. The proposed scheme could not only improve the performance of the system but also average the signal-to-noise ratio (SNR) of subcarriers and reduce the difference among subchannels in practical application. The simulation results showed that compared with the traditional scheme, the receiver performance of this scheme was improved by 2.7 dB when the LDPC-coding rate was 87.5% through 70 km standard single mode fiber (SSMF) transmission and the bit error rate (BER) was 3.8 × 10−3. Besides, the constellation distribution was more convergent and uniform.

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DO - 10.1155/2020/1540540

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SN - 1687-8108

VL - 2020

JO - Advances in Condensed Matter Physics

JF - Advances in Condensed Matter Physics

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OCT-precoding combined with LDPC-coding scheme for 128 QAM MB-OFDM UWBOF system

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