基于FPGA设计的相关论文资料大全 84篇用FPGA实现FFT的研究
刘朝晖 韩月秋
摘 要 目的 针对高速数字信号处理的要求，给出了用现场可编程门阵列(FPGA)实现的
快速傅里叶变换(FFT)方案.方法 算法为按时间抽取的基4算法，采用递归结构的块浮点运
算方案，蝶算过程只扩展两个符号位以适应雷达信号处理的特点，乘法器由阵列乘法器实
现.结果 采用流水方式保证系统的速度，使取数据、计算旋转因子、复乘、DFT等操作协
调一致，在计算、通信和存储间取得平衡，避免了瓶颈的出现.结论 实验表明，用FPGA
实现高速数字信号处理的算法是一个可行的方案.
关键词 离散傅里叶变换； 快速傅里叶变换； 块浮点运算； 可编程门阵列
分类号 TP39； TN957.511
Implementation of FFT with FPGA Technology
Liu Zhaohui Han Yueqiu
(Department of Electronics Engineering, Beijing Institute of Technology, Beijing 100081)
Abstract Aim To propose a scheme for implementing FFT with FPGA in accor-dance with the
requirement for high speed digital signal processing. Methods The structure of FPGA and
requirement of system were considered in the experiment, radix-4 algorithm of DIT and recursive
structure were adopted. The group float point arithmetic operation was used in the butterfly and the
array multiplier was used to realize multiplication. Results The pipeline pattern was used to ensure
the system speed, it made fetching data, calculating twiddle factor, complex multiplication and D
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