一种QAM信号定时误差估计算法  

An Algorithm of Timing-error Estimation of QAM Signals

作　　者：李静芳[1] 崔霞霞[1] 

机构地区：[1]中国电子科技集团公司第54研究所,河北石家庄050081

出　　处：《无线电工程》2006年第4期27-28,41,共3页Radio Engineering

摘　　要：基于波形检测的定时误差估计算法适用于PSK/QAM调制方式。该算法非判决指向且计算复杂度较低,并在载波相位变化不大的情况下,性能与载波状态无关。因此定时同步可以独立于载波同步状态,有利于采用载波开环的方法实现时钟同步。The timing-error estimation based on waveform detection can be used in PSK/QAM. The algorithm doesn＇t need decision point and has lower complexity. Under the condition of carrier phase changing slowly, its performance is independent with carrier state, so symbol timing-recovery doesn＇t care the state of carrier synchronization, and can be realized before carrier synchronization.

关 键 词：定时同步 波形检测法 载波同步 

分 类 号：TP763.3[自动化与计算机技术—检测技术与自动化装置]