| 基于定点DSP的高性能FFT谱估计 |
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| 引用本文： | 何羚,张鑫,王健,宋仁清.基于定点DSP的高性能FFT谱估计[J].电子科技大学学报(社会科学版),2006(2). |
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| 作者姓名： | 何羚 张鑫 王健 宋仁清 |
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| 作者单位： | 电子科技大学自动化工程学院 成都610054 |
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| 基金项目： | 国家自然科学基金资助项目(编号90407007) |
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| 摘 要： | 在借鉴现有的快速傅里叶变换频谱校正算法的基础上,提出了改进的双窗法,并根据应用系统的特点,给出了改进的定点数字信号处理扩展精度快速傅里叶变换算法。从理论上分析了改良算法的可行性,通过仿真验证了改良算法的有效性。
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| 关 键 词： | 快速傅里叶变换 能量泄漏 栅栏效应 定点DSP 扩展精度 |
FFT Spectrum Computation with High Performance Based on Fixed-Point DSP |
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| HE Ling,ZHANG Xin,WANG Jian,SONG Ren-qing.FFT Spectrum Computation with High Performance Based on Fixed-Point DSP[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2006(2). |
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| Authors: | HE Ling ZHANG Xin WANG Jian SONG Ren-qing |
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| Abstract: | Based on some established Fast Fourier Transform (FFT) spectrum correction algorithms, this paper presents an improved double-windowing method, as well as the improved extended-precision FFT scheme for fixed-point DSP. The feasibilities of the two reformative methods are discussed theoretically, and the validities are testified by the simulation results. |
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| Keywords: | fast Fourier transform energy leakage picket-fence effect fixed-point DSP extended precision |
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