全数字接收机中最佳匹配滤波器的设计

The Designing of the Best matched Filters in All digital Receivers

在全数字接收机中，匹配滤波是消除信道噪声提高信噪比的一种重要方法。作者改进了一种利用迭代法设计非对称ＦＩＲ匹配滤波器的方法，使其输出为具有线性相位特性的对称ＦＩＲ滤波器。

In an all digital receiver, the match filter is one of the important methods to canclele the channed noise. In this paper we put forward a technique to design symmetric FIR match filters based on an iterative calculation. The result shows that such kind of filter which keeps the characteristics of linear phases, is much better than the traditional raised-cosine filter.