Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System

Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System

In this paper, an improved channel estimation scheme based on time-domain orthogonal gray complementary training sequence (Golay TS) is proposed to resist subcarrier mutual beat interference in 16-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band ove...

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Main Authors: Changqing Xiang, Xi Yang, Xuan Zhou, Xiaojun Zhu, Jincan Xu, Qiong He
Format: Article
Language:English
Published: Hindawi Limited 2020-01-01
Series:Advances in Condensed Matter Physics
Online Access:http://dx.doi.org/10.1155/2020/6273892
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spelling doaj-8585a37fa44e4f43b23d3929a1ec74ac2020-11-25T04:00:17ZengHindawi LimitedAdvances in Condensed Matter Physics1687-81081687-81242020-01-01202010.1155/2020/62738926273892Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF SystemChangqing Xiang0Xi Yang1Xuan Zhou2Xiaojun Zhu3Jincan Xu4Qiong He5College of Information Science and Engineering, Jishou University, Jishou, Hunan 416000, ChinaCollege of Information Science and Engineering, Jishou University, Jishou, Hunan 416000, ChinaCollege of Information Science and Engineering, Jishou University, Jishou, Hunan 416000, ChinaSchool of Software Engineering, Jiangxi University of Science and Technology, Nanchang, Jiangxi 330013, ChinaCollege of Information Science and Engineering, Jishou University, Jishou, Hunan 416000, ChinaCollege of Information Science and Engineering, Jishou University, Jishou, Hunan 416000, ChinaIn this paper, an improved channel estimation scheme based on time-domain orthogonal gray complementary training sequence (Golay TS) is proposed to resist subcarrier mutual beat interference in 16-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band over fiber (16QAM MB-OFDM UWBoF) systems. The simulation results showed that the performance of system with the improved Golay TS channel estimation scheme was improved by about 1 dB compared with the traditional Golay TS channel estimation scheme, at a bit error rate (BER) of 3.8 × 10−3 after 70 km standard single mode fiber (SSMF) transmission. At the same time, the synchronization and channel estimation performance of Golay TS and the selected frequency-domain orthogonal training sequences (TSs) were compared. The simulation results showed that the performance of system with the TSs channel estimation was improved by about 2.7 dB compared with the improved Golay TS channel estimation.http://dx.doi.org/10.1155/2020/6273892
collection DOAJ
language English
format Article
sources DOAJ
author Changqing Xiang
Xi Yang
Xuan Zhou
Xiaojun Zhu
Jincan Xu
Qiong He
spellingShingle Changqing Xiang
Xi Yang
Xuan Zhou
Xiaojun Zhu
Jincan Xu
Qiong He
Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System
Advances in Condensed Matter Physics
author_facet Changqing Xiang
Xi Yang
Xuan Zhou
Xiaojun Zhu
Jincan Xu
Qiong He
author_sort Changqing Xiang
title Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System
title_short Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System
title_full Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System
title_fullStr Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System
title_full_unstemmed Improved Training Sequence Channel Estimation Scheme in 16QAM MB-OFDM UWBoF System
title_sort improved training sequence channel estimation scheme in 16qam mb-ofdm uwbof system
publisher Hindawi Limited
series Advances in Condensed Matter Physics
issn 1687-8108
1687-8124
publishDate 2020-01-01
description In this paper, an improved channel estimation scheme based on time-domain orthogonal gray complementary training sequence (Golay TS) is proposed to resist subcarrier mutual beat interference in 16-quadrature amplitude modulation multiband orthogonal-frequency-division-multiplexing ultrawide band over fiber (16QAM MB-OFDM UWBoF) systems. The simulation results showed that the performance of system with the improved Golay TS channel estimation scheme was improved by about 1 dB compared with the traditional Golay TS channel estimation scheme, at a bit error rate (BER) of 3.8 × 10−3 after 70 km standard single mode fiber (SSMF) transmission. At the same time, the synchronization and channel estimation performance of Golay TS and the selected frequency-domain orthogonal training sequences (TSs) were compared. The simulation results showed that the performance of system with the TSs channel estimation was improved by about 2.7 dB compared with the improved Golay TS channel estimation.
url http://dx.doi.org/10.1155/2020/6273892
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AT xuanzhou improvedtrainingsequencechannelestimationschemein16qammbofdmuwbofsystem
AT xiaojunzhu improvedtrainingsequencechannelestimationschemein16qammbofdmuwbofsystem
AT jincanxu improvedtrainingsequencechannelestimationschemein16qammbofdmuwbofsystem
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