一种基于导频时频滤波的信道估计方案

A scheme of channel estimation based on the pilot filtering

针对传统信道估计中,导频容易受到噪声和干扰的污染,从而导致系统性能下降的问题,提出了一种适用于WiMAX系统的导频时频滤波方案。算法简单,易于实现。通过仿真结果证明在不同的信道模型下,此方案能明显地提高系统的性能。

In the typical channel estimation method, pilot is easy affected by the noise and disturbance, so the system performance is going to bad. In order to overcome this problem, a new scheme is proposed , that is using the pilot filtering method both in the time domain and frequency domain. The algorithm is simple and available to reahze in the WiMAX system. Under the different models, the results of simulation proved that this scheme can improve the system performance obviously.