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Technology of Network & Communication
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App. Res. of Comp. Printed Article
Vol. 40, 2023 No. 2
565-570

1-D CNN-based two-stage timing synchronization method for OFDM systems

Qing Chaojin
Yang Na
Tang Shuhai
Rao Chuangui
School of Electrical Engineering & Electronic Information, Xihua University, Chengdu 610039, China
DOI: 10.19734/j.issn.1001-3695.2022.05.0310

Abstract

Aiming at the low accuracy of timing synchronization problem in orthogonal frequency division multiplexing(OFDM) system due to the multipath interference, this paper proposed a 1-D CNN-based two-stage timing synchronization method for OFDM systems. In the first stage, it employed the classical cross-correlation method, which realized the initial extraction of path features and thus captured the auxiliary synchronization point of the timing synchronization according to the distinguishable paths. Based on the captured auxiliary synchronization point, it developed the 1-D CNN network for learning timing offset of second stage. Finally, it estimated the timing offset by combining the processes during two stages. Compared with the compressed sensing-based synchronization method and the extreme learning machine-based synchronization method, the two-stage timing synchronization method for OFDM systems investigated improves the accuracy of timing synchronization, while effectively reducing the computational complexity and processing delay.

Foundation Support

四川省科技计划资助项目(2021JDRC0003)
四川省产业发展专项资金资助项目(ZYF-2018-056)
四川省科技计划项目重大科技专项基金资助项目(19ZDZX0016/2019YFG0395)
2020年成都市第二批重大科技应用示范项目(2020-YF09-00048-SN)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2022.05.0310
Publish at: Application Research of Computers Printed Article, Vol. 40, 2023 No. 2
Section: Technology of Network & Communication
Pages: 565-570
Serial Number: 1001-3695(2023)02-042-0565-06

Publish History

[2022-08-29] Accepted Paper
[2023-02-05] Printed Article

Cite This Article

卿朝进, 杨娜, 唐书海, 等. 基于1-D CNN的二阶段OFDM系统定时同步方法 [J]. 计算机应用研究, 2023, 40 (2): 565-570. (Qing Chaojin, Yang Na, Tang Shuhai, et al. 1-D CNN-based two-stage timing synchronization method for OFDM systems [J]. Application Research of Computers, 2023, 40 (2): 565-570. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.

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