scholarly journals Efficient joint timing and frequency synchronization algorithm for coherent optical OFDM systems

2016 ◽  
Vol 24 (17) ◽  
pp. 19969 ◽  
Author(s):  
Xinwei Du ◽  
Jing Zhang ◽  
Yan Li ◽  
Changyuan Yu ◽  
Pooi-Yuen Kam
Keyword(s):  
Frequency Synchronization ◽  
Ofdm Systems ◽  
Synchronization Algorithm ◽  
Optical Ofdm

Joint timing and frequency synchronization in coherent optical OFDM systems

2019 ◽  
Vol 12 (1) ◽  
pp. 4-14 ◽  
Author(s):  
Xinwei Du ◽  
Pooi-Yuen Kam ◽  
Changyuan Yu
Keyword(s):  
Frequency Synchronization ◽  
Ofdm Systems ◽  
Optical Ofdm

A Novel Frequency Synchronization Algorithm Based on PN Sequences and Pilots for TFU-OFDM Systems

2011 ◽  
Vol 58-60 ◽  
pp. 1541-1547
Author(s):  
Guang Da Xue ◽  
Li Li Hu ◽  
Da Jin Wang
Keyword(s):  
Frequency Domain ◽  
Time Domain ◽  
Orthogonal Frequency Division Multiplexing ◽  
Modulation Scheme ◽  
Frequency Synchronization ◽  
Ofdm Systems ◽  
Synchronization Method ◽  
Synchronization Algorithm ◽  
Pn Sequences ◽  
Sufficient Precision

In this paper, a novel frequency synchronization algorithm for a new modulation scheme named time domain and frequency domain united orthogonal frequency division multiplexing (TFU-OFDM) is introduced. The frequency synchronization method has two-steps, which joints time and frequency domain estimation based on PN sequences and pilots. We utilize the PN sequences as guard intervals in time domain to achieve the first-step estimation and the second-step is realized by the pilots in data blocks in frequency domain. The simulation results and analysis show that the proposed frequency synchronization method could achieve fast and reliable synchronization and sufficient precision, and provides excellent performance for TFU-OFDM systems.

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