基于Turbo阵列的超高速流水线FFT设计与实现  

Design and implementation of ultra high speed pipeline FFT based on Turbo array

作　　者：孙晓锋[1] 刘晓杰[1] 冀云成 刘文魁 SUN Xiao-feng;LIU Xiao-jie;JI Yu-cheng;LIU Wen-kui(The 54th Research Institute of CETC;Unit 61768,PLA)

机构地区：[1]中国电子科技集团公司第五十四研究所 [2]中国人民解放军第61768部队

出　　处：《中国集成电路》2020年第7期35-40,52,共7页China lntegrated Circuit

摘　　要：FFT算法被广泛应用以获取信号的频域特征,其在数字信号处理中发挥着十分重要的作用。本文提出了一种基于Turbo结构的快速傅里叶变换FFT的VLSI实现方案。该方案能够突破传统方法中点数的约束,对不满足传统转换点数的FFT进行分解,使其能够实现任意点数的离散傅里叶变换(FFT)。另外,与传统的FFT结构相比,Turbo结构不仅能够降低硬件开销,它在权衡吞吐量和硬件成本之间更加灵活。因此,设计者可以更加灵活的设计FFT处理器,以满足实际系统的要求。FFT algorithm is widely used to obtain the frequency characteristics of signals.It plays an important role in digital signal processing.This paper presents a VLSI implementation of FFT based on Turbo structure.This scheme can break through the restriction of the number of points in the traditional method,decompose the FFT which does not satisfy the traditional number of conversion points,and realize the discrete Fourier transform of any number of points.Compared with the traditional FFT architecture,turbo architecture can not only reduce the hardware overhead,but also be more flexible in weighing the throughput and hardware cost.Therefore,designers can design FFT processor more flexibly to meet the requirements of the actual system.

关 键 词：FFT DFT Turbo结构 FPGA 

分 类 号：TP332[自动化与计算机技术—计算机系统结构] TN911.72[自动化与计算机技术—计算机科学与技术]