基于偏量与主系数的同步偏差估计改进算法

An Improved Synchronous Deviation Estimation Algorithm Based on Deviator and Main Factor

为解决ST和DDST方法中的同步问题,给出未知信道阶数情况下的同步偏差估计方法。将已知信道阶数情况下的同步偏差估计方法进行改进,利用改进算法对ST和DDST的同步偏差估计进行仿真,并对DDST信道估计中不同延迟倍数情况下的同步偏差进行分析。仿真验证结果表明:改进的算法适用于未知信道阶数情况下的同步偏差估计,能准确估计出不同阶数情况下的同步偏差。

To solve the synchronization problem of ST and DDST method, the paper raises a synchronous deviation estimation method in case of unknown channel order. Through improving the synchronous deviation estimation method in case of known channel order, the paper simulated the synchronous deviation estimation of ST and DDST, analyzed the synchronous deviation of DDST channel estimation in case of multiple different delay. The results of simulation and verification show that the improved algorithm is appropriate for the synchronous deviation estimation in case of unknown channel order. It can correctly estimate the synchronous deviation of different order situation.