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Pipelined Radix- 2k Feedforward FFT Architectures

Garrido Gálvez, Mario and Grajal de la Fuente, Jesús and Sánchez Marcos, Miguel Ángel and Gustafsson, Oscar (2011) Pipelined Radix- 2k Feedforward FFT Architectures. IEEE Transactions on Very Large Scale Integration (Vlsi) Systems (99). pp. 1-10. ISSN 1063-8210

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Item Type:Article
Authors/Creators:
Creators NameCreators email (if known)
Garrido Gálvez, Mario
Grajal de la Fuente, Jesús
Sánchez Marcos, Miguel Ángel
Gustafsson, Oscar
Title:Pipelined Radix- 2k Feedforward FFT Architectures
Publisher:IEEE, Instituto de Ingenieros Eléctricos y Electrónicos
Journal/Publication Title:IEEE Transactions on Very Large Scale Integration (Vlsi) Systems
Date:2011
Number:99
Department:Signals, Systems and Radiocommunications
Faculty:E.T.S.I. Telecommunication (UPM)
Creative Commons licenses:Recognition - No derivative works - No commercial
Item ID:12291
Subjects:Telecommunications
Electronics
Computer Science

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Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6118316

Abstract

The appearance of radix-$2^{2}$ was a milestone in the design of pipelined FFT hardware architectures. Later, radix-$2^{2}$ was extended to radix-$2^{k}$ . However, radix-$2^{k}$ was only proposed for single-path delay feedback (SDF) architectures, but not for feedforward ones, also called multi-path delay commutator (MDC). This paper presents the radix-$2^{k}$ feedforward (MDC) FFT architectures. In feedforward architectures radix-$2^{k}$ can be used for any number of parallel samples which is a power of two. Furthermore, both decimation in frequency (DIF) and decimation in time (DIT) decompositions can be used. In addition to this, the designs can achieve very high throughputs, which makes them suitable for the most demanding applications. Indeed, the proposed radix-$2^{k}$ feedforward architectures require fewer hardware resources than parallel feedback ones, also called multi-path delay feedback (MDF), when several samples in parallel must be processed. As a result, the proposed radix-$2^{k}$ feedforward architectures not only offer an attractive solution for current applications, but also open up a new research line on feedforward structures.

Item Type:Article
Subjects:Telecommunications
Electronics
Computer Science
Código ID:12291
Depositado Por:Memoria Investigacion
Depositado el:30 Aug 2012 09:53
Last Modified:02 Jan 2013 18:40

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