非整数倍采样情况下的定时恢复研究

针对宽带卫星通信系统中非整数倍采样的定时恢复问题,介绍了一种整数倍变换法—将非整数倍采样信号进行速率整数倍变换后再进行定时估计,并提出了一种新的定时恢复方法。这种新方法对采样数据直接进行定时估计,然后再内插出同步信号。通过对两种方法的分析比较可知,新方法的实现复杂度更低,定时恢复性能更好。

Research on Timing Recovery with Non-integral Sampling

Aiming at the problem of timing recovery with the non-integer multiple of sampling in wideband satellite communication, this paper introduces an integral multiple method which performs rate integral multiple for non-integral multiple sampling signal and then timing estimation,and proposes a new timing recovery method.The new method directly implements timing estimation for sampling data,and then interpolates the optimal sampling point.By analyzing the complexity and timing performance of the two methods,we can draw a conclusion that the new method is better than the conventional one.