NDLI: Simplified addressing scheme for mixed radix FFT algorithms

Content Provider	IEEE Xplore Digital Library
Author	Cuimei Ma Yizhuang Xie He Chen Yi Deng Wen Yan
Copyright Year	2014
Description	Author affiliation: Virginia Polytech. Inst. & State Univ., Arlington, VA, USA (Yi Deng) \|\| Beijing Inst. of Technol., Beijing, China (Cuimei Ma; Yizhuang Xie; He Chen; Wen Yan)
Abstract	A mixed radix algorithm for the in-place fast Fourier transform (FFT), which is broadly used in most embedded signal processing fields, can be explicitly expressed by an iterative equation based on the Cooley-Tukey algorithm. The expression can be applied to either decimation-in-time (DIT) or decimation-in-frequency (DIF) FFTs with ordered inputs. For many newly emerging low power portable computing applications, such as mobile high definition video compressing, mobile fast and accurate satellite location, etc., the existing methods perform either resource consuming or non-flexible. In this paper, we propose a new addressing scheme for efficiently implementing mixed radix FFTs. In this scheme, we elaborately design an accumulator that can generate accessing addresses for the operands, as well as the twiddle factors. The analytical results show that the proposed scheme reduces the algorithm complexity meanwhile helps the designer to efficiently choose an arbitrary FFT to design the in-place architecture.
Sponsorship	IEEE Signal Process. Soc.
Starting Page	8355
Ending Page	8359
File Size	4218040
Page Count	5
File Format	PDF
ISBN	9781479928934
DOI	10.1109/ICASSP.2014.6855231
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-04
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer architecture Discrete Fourier transforms Algorithm design and analysis Speech Signal processing algorithms Indexes Acoustics arithmetical complexity Fast Fourier Transform mixed radix address generation in place
Content Type	Text
Resource Type	Article

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