High efficient and real-time realization of Zoom FFT based on FPGA

The paper proposed a novel method for implementing Zoom FFT with field programmable gate array (FPGA) for high performance spectral analysis. A scheme of multistage decimation Zoom FFT was given by using the parallel pipelining processing character of FPGA to reduce the computational complexity of t...

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Bibliographic Details
Published in2010 International Conference on Computer Application and System Modeling (ICCASM 2010) Vol. 2; pp. V2-669 - V2-673
Main Authors Dong Pei, Shuo Yang, Hongwu Yang, Quanzhou Wang, Manman Li
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2010
Subjects
Artificial neural networks
CIC filtering
Field programmable gate arrays
FPGA
Modulation
multistage decimation
Pipeline processing
polyphase filtering
Zoom FFT
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Summary:The paper proposed a novel method for implementing Zoom FFT with field programmable gate array (FPGA) for high performance spectral analysis. A scheme of multistage decimation Zoom FFT was given by using the parallel pipelining processing character of FPGA to reduce the computational complexity of traditional Zoom FFT. Meanwhile, a polyphase filter suitable for high decimation-times was designed, and then the polyphase filter and an efficient cascaded integrator-comb (CIC) filter were applied into every stage of decimation structure. Simulation result indicates that compared with single-stage decimation structure, our method's error of amplitude analysis can be lower than 1dB for 200 of decimation-times, so that maximum Zoom-times and precision can be improved. The method can reduce FPGA resources consuming and achieve high processing speed.
ISBN:9781424472352
1424472350
ISSN:2161-9069
DOI:10.1109/ICCASM.2010.5620514