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Analysis of institutional authors

Garrido, MarioCorresponding AuthorGrajal, J.Author

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June 9, 2019
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Article

Pipelined Radix-2(k) Feedforward FFT Architectures

Publicated to: IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS. 21 (1): 23-32 - 2013-01-01 21(1), DOI: 10.1109/TVLSI.2011.2178275

Authors:

Garrido, M; Grajal, J; Sánchez, MA; Gustafsson, O
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Affiliations

Linkoping Univ, Dept Elect Engn, SE-58183 Linkoping, Sweden - Author
Univ Politecn Madrid, Dept Elect Engn, E-28040 Madrid, Spain - Author
Univ Politecn Madrid, Dept Signal Syst & Radiocommun, E-28040 Madrid, Spain - Author
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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) canbe 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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Keywords

ClocksComputer architectureDelayDesignFast fourier transform (fft)Feedforward neural networksFourierIndexesMultipath delay commutator (mdc)MultiplexingPipelined architectureProcessorRadix-2 kRadix-2(k)ThroughputVlsiVlsi architecture

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2013, it was in position 136/248, thus managing to position itself as a Q2 (Segundo Cuartil), in the category Engineering, Electrical & Electronic. Notably, the journal is positioned en el Cuartil Q2 para la agencia Scopus (SJR) en la categoría Electrical and Electronic Engineering.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 7.23. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 7.95 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-25, the following number of citations:

  • WoS: 145
  • Scopus: 202
  • Google Scholar: 292
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-25:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 39.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 39 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 3.

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/12291/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 607
  • Downloads: 4,727
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Sweden.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (GARRIDO GALVEZ, MARIO) .

the author responsible for correspondence tasks has been GARRIDO GALVEZ, MARIO.

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Awards linked to the item

This work was supported in part by the FPU Fellowship AP2005-0544 of the Spanish Ministry of Education, in part by the Project TEC2008-02148 of the Spanish National Research and Development Program, and in part by the Swedish ELLIIT Program.
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