基于倾斜相位和脉冲截断的Multi-h CPM早迟环定时同步简化算法

A Simplified Timing Synchronization Method Based on Early-Late Loop for Multi-h CPM

多调制指数连续相位调制Multi-h CPM信号具有频谱效率高且兼顾功率效率的特点,在航天遥测领域具有广阔的应用前景。提出一种基于倾斜相位和脉冲截断降复杂度算法的Multi-h CPM早迟环定时同步方案,并与目前主流的基于PAM分解的定时方法进行分析比较和仿真验证。结果表明,所提算法的复杂度相对较低,且其定时估计的归一化方差性能优于同等复杂度下的PAM分解算法。

Multi-h Continuous Phase Modulation has the characteristics of high spectral efficiency and good anti-error performance.It has wide application prospect in most aspects of space telemetry.In this paper we use the tilted phase and frequency pulse truncation methods to simplify the early-late loop based timing synchronization algorithm,and compare its performance with that of the PAM decomposition based simplified timing synchronization method.The simulation results reveal that the proposed method is better in accuracy on the same complexity.