计算机工程Issue(11)：299-302,4.DOI:10.3969/j.issn.1000-3428.2013.11.067
一种改进的Gardner定时同步算法
An Improved Gardner Timing Synchronization Algorithm
摘要
Abstract
Aiming at the problem that the existing timing synchronization algorithm needs a long time acquisition, poor stability and high error rate, an improved Gardner synchronization algorithm is proposed. On the analysis of different interpolation filter, piecewise parabolic interpolation filter is used in synchronization structure. For QPSK signal, open-loop and closed-loop analysis is carried out respectively. Simulation result shows that compared with previous algorithms, the proposed synchronization method has 0.005 s shorter acquisition and then the mean square error is reduced. Moreover, the bit error rate is significantly reduced while signal to noise ratio is greater than 8 dB.关键词
定时同步/插值滤波器/定时误差检测器/S-曲陑/Gardner算法/QPSK调制Key words
timing synchronization/interpolation filter/timing-error detector/S-curve/Gardner algorithm/QPSK modulation分类
信息技术与安全科学引用本文复制引用
刘伟,姚远程,秦明伟..一种改进的Gardner定时同步算法[J].计算机工程,2013,(11):299-302,4.基金项目
国家部委基金资助陠目；西南科技大学研究生创雴基金资助陠目(12ycjj29) （12ycjj29）
