| 基于超大规模FPGA的FFT设计与实现 |
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| 引用本文： | 黄隽,刘勇,韩方景. 基于超大规模FPGA的FFT设计与实现[J]. 电子技术应用, 2009, 35(1) |
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| 作者姓名： | 黄隽 刘勇 韩方景 |
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| 作者单位： | 国防科技大学,电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 在宽带数字接收机中,需要对数字检波输出的信号流进行实时FFT运算。提出了一种用于宽带数字接收机的基于Xilinx的Virtex-IV芯片的高速FFT的设计与实现方法,采用了多级串行流水线结构及优化的数据存取方式,设计出用单片FPGA实现了2048点实数的FFT方案。其完成2048点FFT的时间约为4.57μs,能很好地满足系统处理的实时性要求,在工程实践中有很大的应用前景。
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| 关 键 词： | FPGA FFT算法 数字接收机 多级流水线 |
Design of FFT operation based on ultra large scale FPGA |
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| HUANG Jun,LIU Yong,HAN Fang Jing. Design of FFT operation based on ultra large scale FPGA[J]. Application of Electronic Technique, 2009, 35(1) |
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| Authors: | HUANG Jun LIU Yong HAN Fang Jing |
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| Affiliation: | HUANG Jun,LIU Yong,HAN Fang Jing (Institute of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | The speed of carrying out a FFT operation has been improved due to the using of ultra very large scale Field Programmable Gate Array(FPGA). It is needed to carry out a FFT operation on the digital signal stream which is outputted by a digital detector of a wide band digital receiver. The paper studied a method of high speed FFT operation based on the Xilinx Virtex-IV FPGA,the module of FFT operation is used in a wideband digital receiver. A structure of multilevel serial pipeline is brought forward, and the... |
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| Keywords: | FPGA |
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