DocumentCode
2840700
Title
Research on implementation of FFT based on FPGA
Author
Liu, Fangming ; Pan, Xiaozhong
Author_Institution
Dept. of Electron. Technol., Eng. Coll. of Armed Police Force, Xi´´an, China
Volume
7
fYear
2010
fDate
22-24 Oct. 2010
Abstract
The FFT plays an important role in the modulation and demodulation of OFDM system. To meet the requirements of FFT in an OFDM system, the key techniques of the implementation of FFT based on FPGA is discussed in this paper. After the comparison among three typical butterfly units, the one with pipeline processing structure is introduced. Then a recursive structure of FFT on Radix-2 single butterfly is realized. This structure greatly reduced the amount of hardware resource, while an accepted processing speed is guaranteed.
Keywords
OFDM modulation; fast Fourier transforms; field programmable gate arrays; FFT; FPGA; OFDM system; butterfly unit; demodulation; fast Fourier transforms; field programmable gate arrays; hardware resource; orthogonal frequency division multiplexing; pipeline processing structure; processing speed; radix-2 single butterfly; recursive structure; Read only memory; Butterfly Unit; FFT; FPGA;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location
Taiyuan
Print_ISBN
978-1-4244-7235-2
Electronic_ISBN
978-1-4244-7237-6
Type
conf
DOI
10.1109/ICCASM.2010.5620808
Filename
5620808
Link To Document