| 基于近似核FFT快速测频算法的FPGA实现 |
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| 引用本文： | 袁俊榆,杜正聪,祝俊.基于近似核FFT快速测频算法的FPGA实现[J].四川理工学院学报(自然科学版),2011,24(4):456-458. |
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| 作者姓名： | 袁俊榆 杜正聪 祝俊 |
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| 作者单位： | 电子科技大学电子工程学院,成都,610054 |
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| 基金项目： | 国家“十一五”预研项目资助 |
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| 摘 要： | 通过理论分析高阶近似核FFT和基2 DIF-FFT的结构,实现了基于64点近似核DFT的快速算法。算法基于基2 DIF-FFT的结构,通过蝶形运算和分解算法有效的减少了运算量,提高了低阶FFT的动态范围,易于硬件实现。理论分析和FPGA硬件实验结果验证了算法的有效性。
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| 关 键 词： | 近似核 频率估计 基2DIF-FFT FPGA |
Fast Frequency Estimation Algorithm Based on FFT with Approximations to Kernel Function Using FPGA |
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| YUAN Jun-yu,DU Zheng-cong,ZHU Jun.Fast Frequency Estimation Algorithm Based on FFT with Approximations to Kernel Function Using FPGA[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,2011,24(4):456-458. |
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| Authors: | YUAN Jun-yu DU Zheng-cong ZHU Jun |
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| Institution: | 1(1.School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;2.Panzhihua University,Panzhihua 617000,China) |
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| Abstract: | Via theoretical analysis for approximate high-order kernel function and radix-2 DIT-FFT structure,a fast algorithm,based on the approximate kernel function with 64 points,is proposed to implement DFT,which improves the dynamic range of FFT with low-order kernel function,decreases computational complexity efficiently,and is better in terms of hardware implementation,by butterfly computation and decomposition.Both theoretical analysis and FPGA experimental results verify its efficiency. |
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| Keywords: | approximate kernel frequency estimation radix-2 DIT-FFT FPGA |
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