AN IMPROVED TIMING RECOVERY METHOD BASED ON GARDNER ALGORITHM
AN IMPROVED TIMING RECOVERY METHOD BASED ON GARDNER ALGORITHM
- Author(s): J. Zhu 1 ; Y. Jiang 1 ; K. Zhao 2 ; P. Ma 1
- DOI: 10.1049/icp.2021.1320
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- Author(s): J. Zhu 1 ; Y. Jiang 1 ; K. Zhao 2 ; P. Ma 1
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View affiliations
-
Affiliations:
1:
Faculty of Information Technology of Beijing University of Technology , Beijing , China ;
2: National Institute of Metrology , Beijing , China
Source:
The 8th International Symposium on Test Automation & Instrumentation (ISTAI 2020),
2021
p.
1 – 5
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Affiliations:
1:
Faculty of Information Technology of Beijing University of Technology , Beijing , China ;
- Conference: The 8th International Symposium on Test Automation & Instrumentation (ISTAI 2020)
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- DOI: 10.1049/icp.2021.1320
- ISBN: 978-1-83953-506-2
- Location: Online Conference
- Conference date: 28-29 November 2020
- Format: PDF
Symbol synchronization is a key technology for synchronous demodulation of digital modulation signals. Aiming at the limitation of timing error detection and long timing time in the closed-loop Gardner timing recovery algorithm, the timing error detection method is modified, and an improved method of adding gain control processing is proposed. The simulation results show that the improved algorithm can capture timing error of multi-level modulation signal, significantly reduce timing errors and shorten timing time. The steady-state timing jitter is an order of magnitude smaller than the classic loop. The timing recovery of MQAM signal and MPSK signal can be completed well, which proves the good applicability of the improved algorithm.
Inspec keywords: timing jitter; error detection; demodulation; phase shift keying; quadrature amplitude modulation; synchronisation
Subjects: Codes; Signal processing and detection