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A Pipelined FFT Arc...
A Pipelined FFT Architecture for Real-Valued Signals
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- Garrido, Mario, 1981- (författare)
- Department of Signal, Systems and Radiocommuncations, Universidad Politecnica de Madrid, Madrid, Spain
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- Parhi, Keshab. K. (författare)
- University of Minnesota, USA
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- Grajal, Jesus (författare)
- Department of Signal, Systems and Radiocommuncations, Universidad Politecnica de Madrid, Madrid, Spain
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(creator_code:org_t)
- IEEE, 2009
- 2009
- Engelska.
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Ingår i: IEEE Transactions on Circuits and Systems Part 1. - : IEEE. - 1549-8328 .- 1558-0806. ; 56:12, s. 2634-2643
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This paper presents a new pipelined hardware archi-tecture for the computation of the real-valued fast Fourier trans-form (RFFT). The proposed architecture takes advantage of the re-duced number of operations of the RFFT with respect to the com-plex fast Fourier transform (CFFT), and requires less area whileachieving higher throughput and lower latency.The architecture is based on a novel algorithm for the computa-tion of the RFFT, which, contrary to previous approaches, presentsa regular geometry suitable for the implementation of hardwarestructures. Moreover, the algorithm can be used for both the deci-mation in time (DIT) and decimation in frequency (DIF) decompo-sitions of the RFFT and requires the lowest number of operationsreported for radix 2.Finally, as in previous works, when calculating the RFFT theoutput samples are obtained in a scrambled order. The problemof reordering these samples is solved in this paper and a pipelinedcircuit that performs this reordering is proposed.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Decimation in frequency
- decimation in time
- fast Fourier transform (FFT)
- memory reduction
- pipelined archi- tecture
- real-valued signals
- reordering circuit.
- Electrical engineering
- Elektroteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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