The performances for both cycle prefix (CP) and zeros-padding (ZP) mode pilots are compared and analyzed in the case of unknown channel order (UCO).

在信道阶数未知情况下，对其导频采用循环前缀（CP）方式和补零（ZP）方式的性能做了比较分析。

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For character strings, padding is with blanks; for bit strings, it is with zeros.

对于字符串，填充的是空格字符；对于位串，填充的是零。

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Compared with traditional inverse Fourier transform method, which used zeros padding method, at the same condition of sampling resolution, the method proposed could decrease the calculation load.

与传统的数据长度补零逆傅里叶变换方法相比，在相同的采样分辨率条件下，该方法能有效减小计算量。

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Compared with traditional inverse Fourier transform method, which used zeros padding method, at the same condition of sampling resolution, the method proposed could decrease the calculation load.

与传统的数据长度补零逆傅里叶变换方法相比，在相同的采样分辨率条件下，该方法能有效减小计算量。

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