| CORDIC流水线结构在FFT设计中的改进 |
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| 引用本文： | 于效宇,宋立新,刘艳. CORDIC流水线结构在FFT设计中的改进[J]. 哈尔滨理工大学学报, 2005, 10(1): 55-57 |
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| 作者姓名： | 于效宇 宋立新 刘艳 |
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| 作者单位： | 哈尔滨理工大学,电气与电子工程学院,黑龙江,哈尔滨,150040;哈尔滨理工大学,电气与电子工程学院,黑龙江,哈尔滨,150040;哈尔滨理工大学,电气与电子工程学院,黑龙江,哈尔滨,150040 |
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| 摘 要： | 针对利用CORDIC流水线实现FFT蝶形运算耗费资源多的问题，依据CORDIC计算迭代系数的方法以及FFT算法中旋转因子W^p固定不任意的特点，改进了CORDIC流水线的结构形式，使其适应FFT算法．实验证明，这种改进结构既保证了蝶形运算的速度，又节约了芯片资源，适合在FFT芯片设计中使用．
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| 关 键 词： | 坐标旋转数字计算机 FFT 现场可编程门阵列 |
| 文章编号： | 1007-2683(2005)01-0055-03 |
| 修稿时间： | 2004-09-23 |
Improvement on CORDIC Pipeline Architecture in FFT Design |
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| YU Xiao-yu,SONG Li-xin,LIU Yan. Improvement on CORDIC Pipeline Architecture in FFT Design[J]. Journal of Harbin University of Science and Technology, 2005, 10(1): 55-57 |
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| Authors: | YU Xiao-yu SONG Li-xin LIU Yan |
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| Abstract: | To the question that using the pipeline to realize FFT butterfly will consume lots of resources, this article presents an improved architecture of CORDIC pipeline to adapt to the FFT arithmetic. This new way is according to the arithmetic of CORDIC which computes the iterative coefficient and the characteristic of the FFT arithmetic that the rotary factor Wp is fixed but not arbitrary. It is proved in the experiments that the improved architecture not only guarantees the velocity of FFT butterfly but also economizes the chip resources and adapts to FFT chip design. |
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| Keywords: | CORDIC FFT FPGA |
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