一种短波高速QAM信号快速无抖动码元同步方案的设计,文章基于Gardner定时误差检测算法、预滤波和一阶过零检测锁相环理论,结合卡尔曼

滤波算法,设计了一种快速无抖动的短波高速QAM信号全数字解调码元同步方案,从理论上

推导了方案中各个参数的设置方法,并在不同的信道环境下测试算法的性能,仿真结果显示

该方案具有优良的性能。

-A short high-speed QAM signal symbol timing quickly without jitter in the design, the article based on Gardner timing error detection algorithm, pre-filter and the first zero-crossing detection of phase-locked loop theory, Kalman filtering algorithm, a fast no-jitter design short-wave high-speed digital QAM signal demodulation symbol synchronization scheme, the program derived from the theory, each parameter setting methods, and the environment in different channels to test the algorithm performance, simulation results show that the scheme has excellent performance.