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" (n. 99); pp. 1-10. ISSN 1063-8210.

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Title:Pipelined Radix- 2k Feedforward FFT Architectures
Authors/Creators:
Creators NameCreators email (if known)
Garrido Gálvez, MarioUNSPECIFIED
Grajal de la Fuente, JesúsUNSPECIFIED
Sánchez Marcos, Miguel ÁngelUNSPECIFIED
Gustafsson, OscarUNSPECIFIED
Item Type:Article
Publisher:IEEE, Instituto de Ingenieros Eléctricos y Electrónicos
Título de Revista/Publicación:IEEE Transactions on Very Large Scale Integration (Vlsi) Systems
Date:2011
Number:99
Department:Signals, Systems and Radiocommunications
Faculty:E.T.S.I. Telecomunicación (UPM)
Subjects:Telecommunications
Electronics
Computer Science
Creative Commons Licenses:Recognition - No derivative works - Non commercial

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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.

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Item ID:12291
Deposited by: Memoria Investigacion
Deposited on:30 Aug 2012 07:53
Last Modified:22 Sep 2014 10:54

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