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1dB,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。
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 pa-rameters of Doppler rate and signal power level. The new algorithm has low implementation complexity and is convenient for real-time processing.
出处
《电讯技术》
北大核心
2017年第5期580-585,共6页
Telecommunication Engineering
关键词
高动态突发信号
载波同步
多普勒参数估计
high dynamic burst signal
carrier synchronization
Doppler parameter estimation
