基于前向结构的高动态突发信号载波同步算法  

A Carrier Synchronization Algorithm for High Dynamic Burst Signals Based on Feedforward Structure

作　　者：刘洋[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2017年第5期580-585,共6页Telecommunication Engineering

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.

关 键 词：高动态突发信号 载波同步 多普勒参数估计 

分 类 号：TN911[电子电信—通信与信息系统]