对于升余弦包络的PSK信号,只有提取的参考信号包络也是升余弦形状才能达到最佳接收效果,然而实现较复杂。本文提出一种简单方法,虽然与最佳接收尚有0.5dB之差,但工程实现极其方便。除了理论分析外,还给出实验结果。因为与匹配过滤效果相差甚少,故称之为准匹配过滤。 For the raised cosine envelope PSK signal, only the extracted reference signal envelope is raised cosine shape to achieve the best reception, however, the implementation is complicated. This paper presents a simple method, although with the best receiver still 0.5dB difference, but the project is extremely convenient. In addition to theoretical analysis, the experimental results are also given. Matching filtering effect because there is little difference, so called quasi-matching filtering.