| 摘要: |
| 为实现高动态突发通信系统载波快速同步，提出了一种新的基于前向结构的突发信号载波同步算法，采用多级处理方案分级实现多普勒变化率、多普勒频偏及载波相位的估计及恢复。理论分析及数值仿真表明，在高动态低信噪比条件下，新算法的载波同步信噪比损失小于1 dB，且对多普勒变化率及信号电平参数不敏感，实现复杂度低，能够满足高实时性应用需求。 |
| 关键词: 高动态突发信号 载波同步 多普勒参数估计 |
| DOI： |
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| 基金项目: |
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| A carrier synchronization algorithm for high dynamic burst signals based on feedforward structure |
| LIU Yang |
| () |
| Abstract: |
| To achieve fast carrier synchronization in high dynamic burst communication system,this paper presents a novel algorithm of carrier synchronization for burst signals based on feedforward structure. A multi-stage processing scheme for recovering Doppler rate,Doppler shift and carrier phase is proposed. Theoretical analysis and simulation results prove the synchronization loss of signal-to-noise ratio(SNR) value keeps below 1 dB even in low SNR and high dynamic circumstance,and is influenced little by the parameters of Doppler rate and signal power level. The new algorithm has low implementation complexity and is convenient for real-time processing. |
| Key words: high dynamic burst signal carrier synchronization Doppler parameter estimation |
《电讯技术》编辑部 