| 离散傅里叶变换误差分析与参数设置 |
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| 引用本文： | 许波,王振宇. 离散傅里叶变换误差分析与参数设置[J]. 微电子学, 2020, 42(4) |
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| 作者姓名： | 许波 王振宇 |
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| 作者单位： | 江苏大学 电气信息工程学院,江苏大学 电气信息工程学院 |
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| 摘 要： | 离散傅里叶变换( Discrete Fourier Transform,DFT) 是数字信号处理教学的重点和难点,其参数设置的正确与否直接影响信号频谱分析的准确性。本文对连续与离散周期信号、非周期信号分别进行DFT运算,从時域和频域角度分析实际频谱与理想频谱之间的误差。通过MATLAB仿真,加深学生对DFT的理解,引导学生正确设置DFT参数。
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| 关 键 词： | 数字信号处理；离散傅里叶变换；误差分析 |
| 收稿时间： | 2019-05-14 |
| 修稿时间： | 2019-05-14 |
Error Analysis and Parameters setting of Discrete Fourier Transform |
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| Xu Bo and. Error Analysis and Parameters setting of Discrete Fourier Transform[J]. Microelectronics, 2020, 42(4) |
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| Authors: | Xu Bo and |
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| Affiliation: | School of Electrical and Information Engineering,Jiangsu University Zhenjiang,212013, |
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| Abstract: | Discrete Fourier Transform (DFT) is the focus and difficulty of digital signal processing. The correct setting of parameters directly affects the accuracy of signal spectrum analysis. In this paper, the DFT operation of continuous and discrete periodic signal and aperiodic signal are carried out, and the error of actual spectrum and ideal spectrum is analyzed from the point of view of time domain and frequency domain.Through MATLAB simulation,students can deep understand the DFT, set the parameters of DFT correctly . |
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| Keywords: | Digital Signal Processing Discrete Fourier Transform Error Analysis |
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