关于DFT中的定点舍入

IEEE EUROCON 2017 -17th International Conference on Smart Technologies Pub Date : 2017-07-01 DOI:10.1109/EUROCON.2017.8011116

M. Daković, L. Stanković, B. Lutovac, I. Stanković

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引用次数: 2

摘要

考虑了用快速不动点算法计算离散傅里叶变换时的舍入误差。结果表明，舍入误差的方差与频率指数有关。用两种舍入方法对理论得到的误差方差进行了统计检验。

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On the fixed-point rounding in the DFT

Rounding error in the discrete Fourier transform calculated with fast fixed-point algorithms is considered. It is shown that the variance of the rounding error depends on frequency index. Theoretically obtained results for error variance are statistically checked on decimation-in-time fast Fourier transform with two rounding methods.

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IEEE EUROCON 2017 -17th International Conference on Smart Technologies

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