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Effect of Finite Word-Length on SQNR, Area and Power for Real-Valued Serial FFT
Univ Minnesota, MN 55455 USA.
Linköping University, Department of Electrical Engineering, Computer Engineering. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-5739-3544
Univ Minnesota, MN 55455 USA.
2019 (English)In: 2019 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), IEEE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Modern applications for DSP systems are increasingly constrained by tight area and power requirements. Therefore, it is imperative to analyze effective strategies that work within these requirements. This paper studies the impact of finite word-length arithmetic on the signal to quantization noise ratio (SQNR), power and area for a real-valued serial FFT implementation. An experiment is set up using a hardware description language (HDL) to empirically determine the tradeoffs associated with the following parameters: (i) the input word-length, (ii) the word-length of the rotation coefficients, and (iii) length of the FFT on performance (SQNR), power and area. The results of this paper can be used to make design decisions by careful selection of word-length to achieve a reduction in area and power for an acceptable loss in SQNR.

Place, publisher, year, edition, pages
IEEE , 2019.
Series
IEEE International Symposium on Circuits and Systems, ISSN 0271-4302
Keywords [en]
FFT; real-valued FFT; serial commutator; area; power; SQNR
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-160448DOI: 10.1109/ISCAS.2019.8702289ISI: 000483076400191ISBN: 978-1-7281-0397-6 (electronic)OAI: oai:DiVA.org:liu-160448DiVA, id: diva2:1355900
Conference
IEEE International Symposium on Circuits and Systems (IEEE ISCAS)
Note

Funding Agencies|National Science Foundation [CCF-1814759]

Available from: 2019-09-23 Created: 2019-09-30 Last updated: 2019-09-23

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf