NGB-W中二次一维维纳滤波信道估计算法性能分析

2×1D wiener filter channel estimation for NGB-W system

在下一代广播电视网无线系统(NGB-W)接收机中,采用了二次一维维纳滤波信道估计算法。本文研究了该信道估计算法的性能与滤波器阶数及信道多普勒频移的关系。通过Cocentric System Studio(CCSS)平台进行仿真,得到不同滤波器阶数和不同多普勒频移下信道估计的均方误差。仿真结果表明,TU6信道环境下,采用二次一维维纳滤波算法进行信道估计时,提高滤波器的阶数,尤其在高多普勒频移信道下,信道估计性能会得到相应的提高。

In this paper,the writers used 2 × 1 D wiener filter channel estimation algorithm for the next generation broadcast wireless（ NGB-W） system. The relationship among different filter order,Doppler shift and channel estimation performance is studied.Based on the simulation of Cocentric System Studio（ CCSS） platform,the mean square error performance of channel estimation under different filter order and different Doppler shift is given. The simulation results show that under TU6 channel model,the performance of channel estimation can be improved by using higher filter especially when the Doppler frequency shift is large.