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引用本文：

高振斌,万红星,陈禾,韩月秋.超长可变点数FFT处理器设计与实现[J].电讯技术，2005，45（4）：92 - 96. [点击复制]
.An Ultra Long Point FFT Processor for Various-Size Data[J].，2005，45（4）：92 - 96. [点击复制]

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超长可变点数FFT处理器设计与实现

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摘要:

介绍了超长可变点数序列FFT处理器的实现方法。采取将一维大点数FFT转换为二维小点数子FFT处理的措施,减小了存储器规模。使用乒乓RAM将基本运算模块级联,形成流水线结构,可连续高速计算N点复数序列FFT/IFFT。用现场可编程门阵列(FPGA)实现了可计算1k~1M点序列长度可变的FFT/IFFT处理器。

关键词: 电子战接收机超长可变点数序列 FFT/IFFT处理器现场可编程门阵列流水线结构

DOI：10.3969/j.issn.1001-893X.

投稿时间：2004-10-22

基金项目:

An Ultra Long Point FFT Processor for Various-Size Data

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Abstract:

The implementation method of an ultra long point FFT processor for various size data is introduced. The FFT function can be split into two sub-transform-blocks, so the predicted gate count for the entire processor can be reduced significantly. Each sub-block consists of several identical butterfly computational elements, which are connected with ping-pong RAMs to reorder the data between the butterfly stages and to form a pipeline structure. A prototype of the processor is implemented by two FPGA chips, which can continuously perform any power-of-two-sized transform between 1k-point and 1M-point.

Key words: EW receiver,Ultra long point,FFT/IFFT processor,FPGA,Pipeline architecture