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›› 2015, Vol. 32 ›› Issue (2): 259-263.DOI: 10.7523/j.issn.2095-6134.2015.02.016

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Design and implementation of high-speed floating points FFT processor based on FPGA

SU Bin1,2, LIU Chang1, PAN Zhigang1   

  1. 1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-03-06 Revised:2014-05-12 Online:2015-03-15

Abstract:

An improved parallel FFT/IFFT butterfly structure is presented. The structure, which is based on the decimation-in-time (DIT) Radix-2 algorithm, contains 8 paths in parallel. IEEE single precision floating complex FFT/IFFT processors are designed by using this parallel structure and achieved with Xilinx ISE 13.1 software. Verifications are carried out with Virtex6 FPGA of Xilinx. The results show that the FFT/IFFT processors can make use of the resources reasonably and enhance both the speed and precision of computation.

Key words: FPGA, single precision floating, FFT/IFFT, Radix-2 algorithm, parallel structure

CLC Number: