由于FNT变换本身的局限，不能完成大点数循环卷积。
Because of FNT's inherent restrictions, it is hard to implement cyclic convolution using FNT.
比较了循环卷积算予和线性卷积算子在计算局部统计量上的异同点。
The circular convolution operator is compared with the linear convolution operator in the calculation of local statistics.
其中针对群延迟的影响，根据循环卷积的原理，提出了一种实现非因果均衡器的方法。
According to the principle of circular convolution, a method of realizing non-causal equalizer is proposed to suppress the influence of the group delay effect.
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