Timing synchronization for wireless ad hoc communication based on preamble symbol

被引：0
|
作者：
Wang C. [1 ,2 ]
Wang F. [1 ]
Li M. [1 ]
机构：
[1] Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai
[2] School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing
来源：
| 1600年 / Chinese Institute of Electronics卷 / 42期
关键词：
Cross-correlation; Preamble symbol; Timing synchronization; Wireless ad hoc communication;
D O I：
10.3969/j.issn.1001-506X.2020.06.22
中图分类号：
学科分类号：
摘要：
The traditional auto-correlation-based timing synchronization and the cross-correlation-based timing synchronization have the disadvantage that the sidelobe of the correlation peak is too wide or the timing metric is sensitive to carrier frequency offset (CFO). Neither of them can meet the fast and accurate timing synchronization requirement of wireless ad hoc communication system. To address these issues, this paper proposes a new timing synchronization algorithm based on the improved cross-correlation. By splitting a long correlator into the product of two parallel sub-correlators, the new method makes the main peak sharper and the second peak lower. The sensitivity to CFO and computational complexity are theoretically analyzed. The Monte Carlo simulation results of the proposed and the traditional cross-correlation timing algorithm show that while remaining the complexity level the proposed method has a gain of 1.1 dB in terms of detection accuracy and the CFO robustness is better. © 2020, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：1372 / 1378
页数：6
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