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| 混合CORDIC在分裂基FFT中的应用 | |
| 引用本文： | 万书芹,阮园,于宗光,王国璋,李天阳. 混合CORDIC在分裂基FFT中的应用[J]. 计算机工程与应用, 2010, 46(11): 73-76. DOI: 10.3778/j.issn.1002-8331.2010.11.022 |
| 作者姓名： | 万书芹 阮园 于宗光 王国璋 李天阳 |
| 作者单位： | 1. 江南大学信息工程学院,江苏,无锡,214000 2. 中国电子科技集团公司第58研究所,江苏,无锡,214000 3. 江南大学信息工程学院,江苏,无锡,214000;中国电子科技集团公司第58研究所,江苏,无锡,214000 |
| 基金项目： | 江苏省自然科学基金No.BK2007026;;‘333高层次人才培养工程’专项资助(No.2007124)~~ |
| 摘 要： | 提出了一个基于CORDIC的分裂基FFT/IFFT处理器来计算2048/4096/8192点DFT。蝶形处理器的算术单元和旋转因子产生器采用CORDIC算法实现，所有的控制信号在片内产生。相比于存储旋转因子所需的ROM，CORDIC旋转因子所用ROM尺寸更小。与传统的FFT实现相比功耗减少了25%。 |
| 关 键 词： | 快速傅里叶变换 分裂基 坐标旋转数字计算机 |
| 收稿时间： | 2009-12-10 |
| 修稿时间： | 2010-2-8 |
Application of hybrid CORDIC in split -radix FFT |
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| WAN Shu-qin,RUAN Yuan,YU Zong-guang,,WANG Guo-zhang,LI Tian-yang.School of Information Engineering,Jiangnan University,Wuxi,Jiangsu ,China .No. Research Institute,China Electronics Technology Group Corporation,China. Application of hybrid CORDIC in split -radix FFT[J]. Computer Engineering and Applications, 2010, 46(11): 73-76. DOI: 10.3778/j.issn.1002-8331.2010.11.022 | |
| Authors: | WAN Shu-qin RUAN Yuan YU Zong-guang WANG Guo-zhang LI Tian-yang.School of Information Engineering Jiangnan University Wuxi Jiangsu China .No. Research Institute China Electronics Technology Group Corporation China |
| Affiliation: | WAN Shu-qin1,RUAN Yuan2,YU Zong-guang1,2,WANG Guo-zhang2,LI Tian-yang21.School of Information Engineering,Jiangnan University,Wuxi,Jiangsu 214000,China 2.No.58 Research Institute,China Electronics Technology Group Corporation,China |
| Abstract: | A CORDIC-based split-radix FFT/IFFT(Fast Fourier Transform/Inverse Fast Fourier Transform) processor is presented to compute 2048/4096/8192-point DFT(Discrete Fourier Transform).The arithmetic unit of butterfly processor and twiddle factor generator are based on CORDIC(Coordinate Rotation Digital Computer) algorithm.The modified CORDIC arithmetic unit is employed for the complex multiplication.A CORDIC twiddle factor generator is proposed and implemented for saving the size of ROM required for storing the t... |
| Keywords: | Fast Fourier Transform(FFT) split-radix Coordinate Rotation Digital Computer(CORDIC) |
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